Update to Electrical Engineering Regulations

DEPARTMENT OF HOMELAND SECURITY

Coast Guard

46 CFR Parts 110, 111, 112, and 113

[Docket No. USCG-2020-0075]

RIN 1625-AC66

Update to Electrical Engineering Regulations

AGENCY:

Coast Guard, DHS.

ACTION:

Final rule.

SUMMARY:

The Coast Guard is updating electrical engineering standards that are incorporated by reference and adding acceptable alternative standards. This rule also eliminates several outdated or unnecessarily prescriptive electrical engineering regulations. This regulatory action is consistent with the standards currently used by industry and supports the Coast Guard's maritime safety mission.

DATES:

This final rule is effective April 17, 2023. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register on April 17, 2023. The incorporation by reference of certain other publications listed in the rule was approved by the Director as of April 30, 2015.

ADDRESSES:

To view documents mentioned in this preamble as being available in the docket, go to

https://www.regulations.gov,

type USCG-2020-0075 in the search box and click “Search.” Next, in the Document Type column, select “Supporting & Related Material.”

FOR FURTHER INFORMATION CONTACT:

For information about this document call or email Raymond Martin, Systems Engineering Division, Coast Guard; telephone 202-372-1384, email

Raymond.W.Martin@uscg.mil.

SUPPLEMENTARY INFORMATION:

Table of Contents for Preamble

I. Abbreviations

II. Executive Summary

III. Basis, Purpose, and Regulatory History

IV. Discussion of Comments and Changes

V. Discussion of the Rule

A. Revisions to § 110.10-1 Incorporation by Reference

B. Generator Prime Movers

C. Electrical Cable

D. IEC 60092-502 Electrical Installations in Ships—Part 502: Tankers—Special Features

E. Emergency Generator in Port

F. Description of Additional Changes Within Subchapter J

VI. Incorporation by Reference

VII. Regulatory Analyses

A. Regulatory Planning and Review

B. Small Entities

C. Assistance for Small Entities

D. Collection of Information

E. Federalism

F. Unfunded Mandates

G. Taking of Private Property

H. Civil Justice Reform

I. Protection of Children

J. Indian Tribal Governments

K. Energy Effects

L. Technical Standards and Incorporation by Reference

M. Environment

I. Abbreviations

1972 COLREGS International Regulations for Preventing Collisions at Sea, 1972

ABS American Bureau of Shipping

ABYC American Boat and Yacht Council

AC Alternating current

ACP Alternative Compliance Program

ANSI American National Standards Institute

API American Petroleum Institute

ASME American Society of Mechanical Engineers

ASTM ASTM International

BLS Bureau of Labor Statistics

BSEE Bureau of Safety and Environmental Enforcement

CAN Canadian National Standard

CFR Code of Federal Regulations

CG-ENG Coast Guard Office of Design and Engineering Standards

CSA CSA Group, formerly Canadian Standards Association

DC Direct current

DHS Department of Homeland Security

DVTP Design verification test procedure

EMC Electromagnetic compatibility

Ex Designation of explosion-protected electrical apparatus complying with IEC standards

FR Federal Register

GS General Schedule

hp Horsepower

HVSC High voltage shore connection

IACS International Association of Classification Societies

IBR Incorporated by reference

IEC International Electrotechnical Commission

IECEx System IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres

IEEE Institute of Electrical and Electronics Engineers

IMO International Maritime Organization

ISA International Society of Automation

ISO International Organization of Standardization

kV Kilovolt

kW Kilowatt

LED Light-emitting diode

MISLE Marine Information for Safety and Law Enforcement

mm

2

Square millimeter

MODU Mobile Offshore Drilling Unit

MOU Mobile Offshore Unit

MSC Marine Safety Center

NAVSEA Naval Sea Systems Command

NEC National Electric Code

NEMA National Electrical Manufacturers Association

NFPA National Fire Protection Association

NPRM Notice of Proposed Rulemaking

NVIC Navigation and Vessel Inspection Circular

OCS Outer Continental Shelf

OCSNCOE Outer Continental Shelf National Center of Expertise

OMB Office of Management and Budget

OSV Offshore Supply Vessel

PSTP Periodic safety test procedure

QFA Qualitative failure analysis

RA Regulatory analysis

§ Section

SOLAS International Convention for Safety of Life at Sea, 1974

U.S.C. United States Code

V Volts

II. Executive Summary

Subchapter J of title 46 of the Code of Federal Regulations (CFR) contains the electrical engineering regulations and standards applicable to vessels and required shipboard systems regulated under subchapters D, H, I, I-A, K, L, O, Q, R, T, U, and W of title 46. A key component of subchapter J is the standards that are incorporated by reference (IBR) in 46 CFR 110.10-1 and cross-referenced throughout parts 110, 111, 112, and 113. On April 22, 2021, the Coast Guard published a notice of proposed rulemaking (NPRM) that contains a detailed description of the background and proposed changes. (86 FR 21440).

This final rule updates prior incorporations by reference in 46 CFR 110.10-1 and all of the sections in subchapter J that reference the updated IBR standards, adds a limited number of alternative standards, and eliminates outdated or unnecessarily prescriptive regulations in subchapter J. More specifically, this rule incorporates more recent editions of many standards, incorporates by reference additional standards for certain topics, and removes IBR standards that are no longer actively used by industry. Due to technological advances, it is necessary to update the current standards to ensure modern technologies are addressed in the regulations. In addition to updating the IBR standards, this rule implements the following four changes to subchapter J.

First, this rule eliminates the prescriptive requirements in 46 CFR 111.12-1(b) and (c) for generator prime movers. In accordance with 46 CFR 58.01-5, these generator prime movers continue to be required to meet standards of the American Bureau of Shipping (ABS) Steel Vessel Rules.

Second, this rule simplifies the electrical cable construction requirements in subpart 111.60 so they are similar to the classification society requirements currently accepted without supplement under the Coast

Guard's Alternate Compliance Program (ACP).

Third, for classifications of hazardous locations in subpart 111.105, this rule adds the International Electrotechnical Commission's (IEC) 60092-502 as an alternative classification. This is an internationally accepted standard, and we are not aware of any notable casualty history attributed to its use as compared to vessels complying with the current applicable U.S. regulations for classification of hazardous locations.

Fourth, this rule amends 46 CFR subpart 112.05 to allow the use of an emergency generator in port. This optional capability to use emergency generators in port is acceptable if a set of additional safeguards, approved by the International Maritime Organization (IMO) in 2005, are provided to ensure the availability of emergency power.

The following table provides an overview of the types of changes and the affected sections.

Table 1—Title 46 CFR Sections Affected by the Rule

Category

Changes

Affected title 46 CFR sections

Incorporated by Reference (IBR) Standards

Editorial

§§ 110.15-1, 111.01-15, 111.05-9, 111.12-3, 111.12-5, 111.12-7, 111.20-15, 111.30-1, 111.30-5, 111.30-19, 111.33-3, 111.33-5, 111.33-11, 111.35-1, 111.40-1, 111.50-3, 111.50-5, 111.50-7, 111.50-9, 111.60-1, 111.60-2, 111.60-6, 111.60-11, 111.60-13, 111.60-19, 111.60-21, 111.70-1, 111.75-17, 111.75-20, 111.99-5, 111.105-3, 111.105-11, 111.105-17, 111.105-19, 111.105-31, 111.105-35, 111.105-40, 111.105-41, 111.105-45, 111.106-3, 111.106-5, 111.106-7, 111.106-13, 111.106-15, 111.107-1, 111.108-1, 111.108-3, 112.50-1, 113.10-7, 113.20-1, 113.25-1, 113.30-25, 113.30-25, 113.30-25, 113.37-10, 113.40-10, 113.65-5.

Updating to more recent edition with changes in technical content

§§ 110.15-1, 111.12-1, 111.12-7, 111.15-2, 111.51-5, 111.54-1, 111.55-1, 111.59-1, 111.60-5, 111.60-7, 111.60-11, 111.60-13, 111.60-23, 111.70-1, 111.75-18, 111.81-1, 111.105-3, 111.105-11, 111.105-33, 111.105-37, 111.105-39, 111.106-3, 111.107-1, 111.108-3, 113.05-7.

Providing additional options

§§ 110.15-1, 111.01-9, 111.15-10, 111.20-15, 111.30-5, 111.30-19, 111.50-3, 111.53-1, 111.59-1, 111.60-1, 111.60-9, 111.60-13, 111.75-17, 111.75-20, 111.81-1, 111.83-7, 111.87-3, 111.105-3, 111.105-11, 111.105-17, 111.105-28, 111.105-29, 111.105-50, 111.106-3, 111.106-5, 111.108-3, 113.05-7, 113.10-7, 113.20-1, 113.25-11, 113.30-25, 113.37-10, 113.40-10.

Generator prime mover alarms and shutdowns

Removing unique Coast Guard requirements

§ 111.12-1.

Electrical cable requirements

Proposing additional option

§ 111.60-1.

Removing prescriptive requirements (existing sections)

§§ 111.60-1, 111.60-3, 111.105-50.

Classification of hazardous location

Proposing additional options

§§ 111.105-3, 111.105-17, 111.105-28.

Editorial—Harmonizing requirements between subparts

§§ 111.105-1, 111.105-3, 111.105-11, 111.105-15 (existing), 111.105-17, 111.105-31, 111.106-3, 111.108-3.

Emergency generator

Allowing use in port

§ 112.05-7.

Revising alarms and shutdowns

§ 112.50-1.

Editorial changes (Other than IBR standards)

§§ 110.15-1, 110.25-1, 110.25-3, 111.05-3, 111.05-37, 111.10-1, 111.10-9, 111.12-11, 111.12-13, 111.15-25, 111.15-30, 111.30-5, 111.30-25, 111.30-27, 111.30-29, 111.33-1, 111.33-3, 111.33-5, 111.33-7, 111.33-9, 111.33-11, 111.50-3, 111.51-1, 111.51-2, 111.51-3, 111.51-6, 111.52, 111.60-7, 111.95-1, 111.99-3, 111.103, 111.105-1, 111.105-3, 111.105-5, 11.105-7, 111.105-9, 111.105-15, 111.105-32, 111.107-1, 112.01-20, 112.05-5, 112.15-1, 112.50-1.

III. Basis, Purpose, and Regulatory History

The legal basis of this rule is section 1333(d) of Title 43, United States Code (U.S.C.), sections 3306 and 3703 of Title 46 U.S.C., and Department of Homeland Security (DHS) Delegation No. 00170.1, Revision No. 01.2. The provisions of 43 U.S.C. 1333(d) grant the Secretary of the Department in which the Coast Guard is operating the authority to promulgate and enforce regulations with respect to lights and other warning devices, safety equipment, and other matters relating to the promotion of safety of life and property on artificial islands, installations, and other devices. The provisions of 46 U.S.C. 3306(a)(1) authorize the Secretary to prescribe regulations for the design, construction, alteration, repair, and operation of vessels subject to inspection, including equipment, appliances, propulsion machinery, auxiliary machinery, boilers, unfired pressure vessels, piping, and electric installations. Additionally, 46 U.S.C. 3703 grants the Secretary authority to provide for navigation and vessel safety and protect against hazards to life, property, and the marine environment by regulating vessel construction, alteration, repair, maintenance, operation, and equipping. DHS Delegation No. 00170.1, Revision No. 01.2, paragraph (II)(92)(b), delegates these authorities to the Coast Guard.

The purpose of this rule is to update the standards incorporated by reference in 46 CFR subchapter J, which provide detailed specifications for electrical equipment used by vessels. Newly published editions of the international standards referenced in subchapter J address new technologies and changes in best practices. The Office of Management and Budget's (OMB) Circular A-119 states agencies should undertake a review of the standards

incorporated by reference every 3 to 5 years to remain current with technological changes. OMB encourages reducing reliance on unique government standards when an existing voluntary consensus standard would suffice. This rule follows the Circular by incorporating newer editions of industry standards and reducing the reliance on unique Coast Guard standards where industry standards are sufficient.

On April 22, 2021, the Coast Guard published a NPRM titled “Update to Electrical Engineering Regulations” (86 FR 21440) requesting comments on the proposed changes implemented by this final rule, including several updates to the standards incorporated by reference. A detailed description of the background and proposed changes are available in that NPRM.

See

86 FR at 21442-60.

IV. Discussion of Comments and Changes

During the comment period for the April 22, 2021 NPRM (86 FR 21440), which ended on July 21, 2021, we received 15 comments. Several commenters expressed their support for the Coast Guard updating the standards incorporated by reference to newer editions and some confirmed they use them in current practice. The comments also offered us feedback on specific changes to the electrical engineering requirements and standards we proposed to incorporate by reference. The comments can be viewed in the docket following the instructions in the

ADDRESSES

section of this preamble. We summarize the comments and our responses, starting with general comments and then responding in order of relevant CFR section. Within each CFR section, we describe any changes to the final rule regulatory text from what was proposed in the NPRM.

General

A commenter submitted an editorial comment on the list of abbreviations in Section II for “MOU.” In this final rule, MOU is now correctly defined as Mobile Offshore Unit.

A commenter requested we update 33 CFR subchapter N to clarify the application of this rulemaking to Outer Continental Shelf (OCS) facilities and stated that, at a minimum, the Coast Guard should update 33 CFR 143.120 to establish the date on which the proposed rule would apply to a new floating OCS facility. Where subchapter N requires compliance with subchapter J, the date of applicability for vessels and facilities will begin 30 days after publication of this final rule, in accordance with the revised § 110.01-1(b). The updated requirements and standards in subchapter J apply to electrical installations contracted for after the effective date of the final rule.

The commenter also noted that the Bureau of Safety and Environmental Enforcement (BSEE) in the Department of the Interior is working on a regulatory update to incorporate more modern industry standards and recommended the Coast Guard engage with BSEE to ensure that both regulatory efforts are aligned, as the agencies propose to incorporate different revisions of the same industry standard in at least two cases. The Coast Guard and BSEE have a shared mission of ensuring safety on the OCS. We work closely together to ensure our requirements are not in conflict with each other, even if we use different revisions of the same standard. Because this final rule is not adding any new requirements for vessel owners and operators, it will not cause any conflicts with BSEE requirements. Any specific concerns can be addressed to either the Coast Guard's Eighth District Outer Continental Shelf Division staff (website:

https://www.atlanticarea.uscg.mil/D8/OCS/

) or the Coast Guard's Outer Continental Shelf National Center of Expertise (OCSNCOE) (website:

https://www.dco.uscg.mil/OCSNCOE/

).

Two commenters requested that we clarify the applicability of subchapter J to Floating Production Units (FPUs), as the Coast Guard Office of Design and Engineering Standards' (CG-ENG) relevant policy letter, CG-ENG Policy Letter 01-13,

1

only applies to classed FPUs rather than all FPUs in service. Similarly, a commenter requested that the Coast Guard clarify the applicability of subchapter J to floating OCS facilities, as the application of the subchapter has led to many requests for equivalencies and alternatives for a class of installations that may not technically be vessels. The comment stated that the Coast Guard should act on the National Offshore Safety Advisory Committee's recommendation that the Coast Guard issue a task statement to evaluate the suitability of subchapters F and J for floating OCS facilities. These requests are outside the scope of this rulemaking, which focuses on updating the electrical engineering standards set out in subchapter J but not further amending the applicability of subchapter J. Nevertheless, we have shared them with the appropriate Coast Guard offices. We encourage questions regarding the applicable regulations for floating OCS facilities to be sent to either the Coast Guard's Eighth District Outer Continental Shelf Division Staff (website:

https://www.atlanticarea.uscg.mil/D8/OCS/

) or OCSNCOE (website:

https://www.dco.uscg.mil/OCSNCOE/

).

1

https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/5ps/Design%20and%20Engineering%20Standards/docs/CG-ENG%20PolicyLetter%2001-13.pdf

.

Subpart 110.01—Applicability

§ 110.01-1 General

We received requests for information on the implementation dates for the revised regulations. In response and to provide greater clarity for the public, this final rule includes an amendment to § 110.01-1(b) that explains the effective date of the requirements in this rule. The requirements implemented in this final rule will be effective 30 days after the publication of this final rule. Paragraph (b) will also clarify that subchapter J applies only to electrical installations contracted for after the effective date of this final rule. Existing paragraph (c) of this section will continue to allow a vessel's electrical installations to meet the subchapter J regulations in place when those systems were initially installed. According to existing 46 CFR 110.01-3(a), repairs and replacements in kind must comply with either the regulations in this subchapter or those in effect when the vessel was built. Per § 110.01-3(b), alterations and modifications, such as re-engining, re-powering, upgrading of the main propulsion control system, or replacing extensive amounts of cabling, must comply with the regulations in this subchapter, including updates implemented by this final rule. Per existing § 110.01-1(c), all electrical systems installed or under Coast Guard review prior to this date may meet the regulations in place at the time of installation or submittal to the Coast Guard.

Subpart 110.10—Reference Specifications, Standards, and Codes

§ 110.10-1 Incorporation by Reference

We received the following comments in regard to our update of the technical standards incorporated by reference in subchapter J in § 110.10-1.

Several commenters suggested incorporating by reference newer editions than we had proposed to incorporate in § 110.10-1. Because of the frequent release of new editions, and the time necessary to evaluate them and propose their incorporation, it is often impractical to incorporate standards or new editions that publish after we issue our NPRM. Instead, the Coast Guard considered whether the standards proposed in the NPRM are still

sufficient and relevant to electrical engineering practices at the time of this final rule, even if a newer edition is available. We determined that the editions proposed in the NPRM are still sufficient and relevant.

Several commenters requested incorporating by reference different standards than are referenced in § 110.10-1 or proposed in the NPRM. The suggestions included standards and codes for alternative propulsion fuels; inspection, maintenance, and repair of equipment in hazardous locations; and hazardous location equipment directories or dossiers. These topics are not currently addressed in subchapter J. Including them at this stage would impose new regulatory requirements on vessels and facilities. This rule is intended to update the existing regulations in subchapter J and result in quantitative and qualitative savings for vessel owners. For this reason, standards for topics not currently addressed in subchapter J are outside the scope of this final rule. We may consider some of these standards in the future for incorporation by reference following a thorough technical analysis of the standards as well as their potential costs and benefits. Further, proposals for new requirements on topics not already included in subchapter J would be given additional public notice and opportunity for comment.

Additionally, we received specific comments on the following standards we proposed for incorporation by reference.

American National Standards Institute (ANSI)/UL standards:

A commenter requested that we refer to the UL standards as ANSI/UL standards. In many of the regulatory text sections we do refer to such standards as ANSI/UL standards, but we do not do so in the IBR section, § 110.10-1. In that IBR section, we are required to list the standard name exactly as it appears on the cover of the standard.

The commenter also noted that many ANSI/UL standards related to hazardous locations replaced similar ISA standards, and suggested the UL standards should be referenced throughout the CFR. We agree with listing the ANSI/UL standards in addition to where we proposed to include the ANSI/ISA standard because of their similarities in requirements and options. In the NPRM we proposed to incorporate ANSI/ISA 12.12.01 (2015). In this final rule we are also adding ANSI/ISA-RP12.06.01 (2003) because it superseded a previously incorporated standard we removed, ISA RP 12.6 (1995). These two are the only ANSI/ISA standards that will be incorporated by reference in subchapter J and both are active standards. Where the ANSI/ISA series of standards are referenced in §§ 111.105-3(b)(2), 111.106-3(b)(2), and 111.108-3(b)(2), this final rule adds the ANSI/UL series as an option in those sections as well.

IEEE 100 (2000):

A commenter noted that the Institute of Electrical and Electronics Engineers (IEEE) withdrew the standard IEEE 100 (2000). IEEE 100 (2000) is only referenced in § 110.15-1 regarding electrical and electronic term definitions. We have decided to retain it in subchapter J because the definitions are still relevant. We have confirmed that the standard is still available for the public to purchase despite IEEE withdrawing it. We acknowledge that a revision to the standard is underway and we will consider updating references to this standard in the future.

IEEE 1580 (2010):

A commenter suggested we incorporate the 2018 edition. The 2018 edition was still in the draft stage when we published the NPRM in April 2021, and we were not able to propose draft standards for incorporation by reference. The IEEE board approved the IEEE 1580 (2021) on November 9, 2021, and published it on March 23, 2022, both dates after the comment period for the NPRM closed. The IEEE 1580 (2021) standard superseded the 2010 version. IEEE 1580 provides recommended practice for marine cable use on shipboard and fixed or floating facilities, and the 2021 edition addresses changes in changes in technology and revisions to referenced standards since 2010. The Coast Guard has decided that the 2010 version is still sufficient and relevant for marine cables at the time of this final rule. However, the public can submit equivalency requests for the 2021 edition to the Marine Safety Center (MSC) in accordance with § 110.20-1.

IEC 60092-302:1997:

A commenter noted that this standard was superseded by IEC 60092-303-2, Electrical installations in ships—Part 302-2: Low voltage switchgear and controlgear assemblies—Marine power, published in 2019. We have decided to retain the 1997 edition until we can thoroughly review the 2019 edition. However, we may consider switchgear meeting the standards in IEC 60092-302-2:2019 under the equivalency provisions of § 110.20-1.

ISA RP 12.6:1995:

We proposed in the NPRM to remove ISA RP 12.6 because ISA has withdrawn it. A commenter noted that a new standard, ANSI/ISA RP12.06.01, has superseded ISA RP 12.6. The commenter is correct. Because the two standards are very similar, we are replacing the withdrawn ISA RP 12.6 standard with the new ANSI/ISA RP12.06.01 standard as suggested. This final rule incorporates by reference ANSI/ISA-RP12.06.01:2003 in § 111.105-11. ANSI/ISA-RP12.06.01 is a recommended practice that promotes the uniform installation of intrinsically safe systems in hazardous (classified) locations and clarifies the requirements of Articles 504 and 505 of National Fire Protection Association (NFPA) standard NFPA 70.

Subpart 110.25—Plan Submittal

§ 110.25-1 Plans and Information Required for New Construction

A commenter noted that the proposed changes to § 111.105-3 provided the option to select electrical equipment on any single vessel to comply with NFPA 70 Articles 500-504, or NFPA 70 Article 505, or IEC 60092-502, based on either the Division or the Zone method of hazardous location classification. The commenter suggested that we amend the plan requirements for hazardous locations in § 110.25-1 to ensure the classification method is indicated on the plans submitted for review. We agree with this suggestion and are incorporating it into this final rule. The extent and classification of all hazardous locations is already required in the existing § 110.25-1(i) but clearly indicating the method of classification, Division or Zone, is important to ensure appropriate selection of equipment for the hazardous location. In this final rule, we amend § 110.25-1(i) to require that the plans indicate the method of classification of the hazardous locations in addition to the other requirements already included in paragraph (i).

Subpart 111.10—Power Supply

§ 111.10-9 Ship's Service Supply Transformers; Two Required

A commenter noted that our proposed revision to the note to § 111.10-09 concerning ship's service transformers appears to contradict the text of § 111.10-09 regarding the number of transformers. We disagree. Section 111.10-3 requires that the shipboard power supply system on self-propelled vessels have at least two electric generating sources. The intent of § 111.10-09 is to continue this requirement by duplicating the number of transformers that are used to supply the ship's service distribution system. As explained in this note, the intent is not to provide duplication of ship's service distribution system circuits after the ship's service switchboard. This is a long-standing position that is explained in Coast Guard guidance, specifically

page 16 of Navigation and Vessel Inspection Circular (NVIC) 2-89, “Guide for Electrical Installations on Merchant Vessels and Mobile Offshore Units,” dated August 14, 1989.

2

2

NVIC 2-89, “Guide for Electrical Installations on Merchant Vessels and Mobile Offshore Drilling Units,” is available at

https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/5ps/NVIC/1989/n2-89.pdf.

Subpart 111.12—Generator Construction and Circuits

§ 111.12-11 Generator Protection

Section 111.12-11(g) states that a ship's service generator and its switchboard must be in the same space and states that a control room inside the machinery casing is not considered outside the machinery space. Paragraphs 111.12-11(g)(1) and (2) provide two arrangements that the Coast Guard considers to meet this requirement. In other words, we consider a switchboard room within the machinery space, containing the overcurrent protection on the switchboard, to be satisfactory, regardless of whether there are centralized engineering controls or monitoring in that control room. This rule, which replaces a reference to a “semiconductor rectifier” with “semiconductor converter” in paragraph (g), does not substantively change these existing provisions. A commenter asked if a control room that is an air-conditioned switchboard room with generator controls on a switchboard, but without centralized engineering control and monitoring, is an acceptable control room. This question is beyond the scope of this rulemaking, but questions regarding compliance with Subchapter J may be submitted to the MSC.

Subpart 111.15—Storage Batteries and Battery Chargers: Construction and Installation

Two commenters suggested we consider incorporating by reference IEEE 1187-2013, “IEEE Recommended Practice for Installation Design and Installation of Valve-Regulated Lead Acid Batteries for Stationary Applications.” The commenters noted that although FPUs are not stationary, they are not ocean-going vessels either. The commenters also noted because FPUs do not have the range of motions of a vessel, they use valve-regulated lead acid batteries (as governed by IEEE 1187-2013) rather than the vented lead-acid batteries covered in the NPRM's updates to subchapter J. We understand the unique characteristics of FPUs may require additional options and guidance. Specifically, 33 CFR 143.120(b) and CG-ENG Policy Letter 01-13 allow alternate proposals for floating OCS facilities. System designers may submit applications to the MSC demonstrating that a system using valve-regulated lead acid batteries, as governed by IEEE 1187-2013, provides an equivalent level of safety in accordance with § 110.20-1. We understand this IBR suggestion and may consider it in a future rulemaking. Further, we find that we cannot include this suggestion in this final rule because, in order to add the standard and those additional requirements, we would prefer to conduct an additional analysis of alternatives and provide the public opportunity to review and comment on its addition.

Subpart 111.30—Switchboards

§ 111.30-5 Construction

In the NPRM, we proposed replacing the existing reference to section 8.3 of IEEE 45-2002 in § 111.30-5(a)(1) with a reference to section 6 of the more recent IEEE 45.7-2012. A commenter noted section 6.3.3 of IEEE 45.7 requires a steering gear breaker trip set to not less than 200 percent of locked rotor current. This conflicts with § 58.25-55(a)(2), which requires a trip set point between 175 and 200 percent of locked rotor current. We agree that the change we proposed in the NPRM would present an unintended conflict with other existing regulations. The intent of § 111.30-5 is to address switchboard construction, not overcurrent protection for specific systems, so when reviewing IEEE 45.7 we did not observe that the standard added a requirement for the steering gear circuit overcurrent protection. We did not intend the NPRM to propose a change to the existing requirements for steering gear circuit overcurrent protection. For this reason, in § 111.30-5(a)(1) of this final rule, we are incorporating section 6 of IEEE 45.7-2012, excluding section 6.3.3.

A commenter asked for clarification of the proposed § 111.30-5(c) regarding switchboard construction, which stated that “[t]he interchangeability and compatibility of components complying with both IEEE and IEC cannot be assumed.” We agree this proposed paragraph (c) could have caused confusion. Our intent in this paragraph was to discourage the mixing of acceptable standards in a manner that could result in a potentially unsafe switchboard. We recognize that complying with and enforcing this relatively vague requirement would be difficult, and we have accordingly deleted it in this final rule. Switchboards should be constructed in accordance with the standards incorporated by reference in subpart 111.30.

§ 111.30-19 Buses and Wiring

In the NPRM, we proposed replacing the existing reference to section 7.10 of IEEE 45-1998 in § 111.30-19(a)(1) with a reference to section 5.10 of the more recent IEEE 45.7-2012. A commenter noted section 5.10 of IEEE 45.7-2012 appears to have less strict requirements for generator bus sizing and could be interpreted to not require sizing to support overload operation of the generator for a sustained period. We disagree. The requirements are very similar, and IEEE 45.7-2012 reflects the latest guidance on bus sizing.

§ 111.30-25 Alternating-Current Ship's Service Switchboards

A commenter suggested that the generator field rheostat (manual voltage controller) currently required by § 111.30-25(c)(1) was of limited value and is not required by other regulatory bodies. We understand this suggestion and may consider it in a future rulemaking. In order to remove the requirement, we would prefer to conduct an additional analysis of alternatives and provide the public opportunity to review and comment on its removal. In the meantime, however, system designers may submit switchboards with alternative instrumentation that provides an equivalent level of safety to the MSC in accordance with § 110.20-1.

Subpart 111.33—Power Semiconductor Converter Systems

In the NPRM, we proposed changing the heading of subpart 111.33 from Power Semiconductor Rectifier Systems to Power Semiconductor Converter Systems and changing references to rectifiers to converters. This proposed change aligned with general industry practice of using the term converter as it is more general than rectifier. This subpart applies to rectifiers (alternating current (AC) to direct current (DC)), inverters (DC to AC), and other power converters. Additionally, in the NPRM we proposed updating the standards incorporated by reference in this subpart to more recent editions. A commenter noted that 4.31.19.12 of IEEE 45.2-2011, which would replace 10.20.12 of IEEE 45-2002, covers rectifiers. The commenter is correct in this regard. However, 4.31.19.12 of IEEE 45.2-2011 provides the required nameplate data, and the Coast Guard determined the requirements of this section are also generally applicable to

any power semiconductor converter system.

In addition, in the NPRM, we proposed replacing references throughout subpart J to “semiconductor rectifier (SCR)” with references to “semiconductor converter”. However, upon further review following the NPRM's publication, we realized that some instances of this amendment were inadvertently not included in the amendatory language for the NPRM. We have updated the amendatory language in this final rule to include these missed instances of “converter” in this final rule at §§ 111.33-1 and 111.33-3(b).

Subpart 111.40—Panelboards

§ 111.40-1 Panelboard Standard

A commenter noted Section 9.10 of IEEE 45.1, proposed for incorporation by reference in the NPRM, includes multiple sub-sections but only subsection 9.10.1 is directly applicable to panelboards. The commenter suggested updating the reference to only include this subsection. We agree, and in the interest of greater precision we revise § 111.40-1 in this rule to only reference subsection 9.10.1.

Subpart 111.50—Overcurrent Protection

§ 111.50-3 Protection of Conductors

A commenter noted that currently neither § 111.50-3 nor § 111.20-15 clearly addresses NFPA 70—National Electric Code (NEC) requirements for transformer secondary conductor protection and suggested that § 111.50-3 should include or cite to NEC 240.21(C)(1) requirements. NEC 240.21(C)(1) explicitly states that primary overcurrent protection is insufficient to protect secondary conductors of delta-wye transformers. In the NPRM, we did not propose substantive changes to these two sections beyond incorporating the more recent editions of the standards. Adding the requirements at NEC 240.21(C)(1) to § 111.50-3 would require additional analysis and opportunity for the public to review and comment. Nevertheless, we may consider incorporating NEC Article 240, which provides guidance for transformer conductor overcurrent protection, in § 111.50-3 in the future.

A commenter also said that neither § 111.50-3 nor § 58.25 currently address DC steering gear motors. The commenter also said that both §§ 111.50-3 and 58.25 are silent on the use of fuses for overcurrent protection in these systems. The commenter suggested that we remove the cross-reference to 46 CFR 58.25 and revise § 111.50-3 to align with ABS SVR 4-8-2/9.17.5 standards on DC steering gear motors and prohibiting fuses. We disagree with the suggested change. Paragraph 58.25-55(a)(1) specifically requires DC steering gear motors to be protected from overcurrent by a circuit breaker at the switchboard. This section does not list fuses as an acceptable means of overcurrent protection. Vessel owners and operators must ensure DC steering gear motors are protected from overcurrent by circuit breakers unless an equivalent arrangement is approved by the MSC in accordance with § 110.20-1. We did not propose substantive changes to these two sections in the NPRM beyond incorporating the more recent editions of the standards already incorporated by reference in § 111.50-3. However, we will consider updating our steering gear motor regulations in the future following a review of the latest advances in steering gear power and control systems.

Subpart 111.51—Coordination of Overcurrent Protection Devices

§§ 111.51-1 Purpose and 111.51-5 Protection of Vital Equipment

In the NPRM, we proposed to revise § 111.51-1 to set out a broad introductory discussion of the requirements for coordination of overcurrent protection devices that is based on the recommendations in IEC 60092-202:2016 and not substantively different from the existing § 111.51-1 that it replaced. A commenter noted the term “continuity of service” as used in the proposed revisions to § 111.51-1, as well as in the current text of § 111.51-1, is not defined and could be interpreted in a number of ways. Additionally, the same commenter also recommended editing § 111.51-5(b)(2) to allow for cases where multiple protective devices are directly in series due to the arrangement of the power system and vendor equipment supply or requirements for disconnecting device. Alternatively, they suggested we define that a protective device refers to a set of one or more protective devices which protect the same segment of the electrical system. The commenter was concerned the section could be interpreted to require explicit coordination between protective devices within the same feeder or branch circuit.

It is not the intent of this final rule to substantively alter our existing regulations for coordination of overcurrent protection devices. Continuity of service is defined in IEC 60092-202:2016 as a “condition where, after a fault in a circuit has been cleared, the supply to the healthy circuits is re-established.” More importantly, the goal of overcurrent protection coordination is to minimize the impact of short circuits on vital equipment as explained in §§ 111.51-1 and 111.51-5. If multiple protective devices are in series, it is incumbent on the system designer to demonstrate the devices satisfy the intent of overcurrent protection coordination. Additionally, proposing a unique definition for protective devices is not a preferred option where the definition is widely used and defined by a standard. We encourage the use of established industry standards and definitions. If there are any vessel or system specific arrangements being proposed for Coast Guard certificated vessels, their equivalency with this subpart can be demonstrated to the MSC in accordance with § 110.20-1. We made no changes from the proposed rule in § 111.51-5.

Subpart 111.60—Wiring Materials and Methods

§ 111.60-3 Cable Application (Existing)

In the NPRM, we proposed to delete this section because it is unnecessarily prescriptive. In its place, we proposed that regulated entities would consult the current and proposed cable construction standards in proposed new § 111.60-1 for the application of specific types of cable. A commenter expressed concern that cable for specialized applications, such as scientific research instruments and passenger ferry Wi-Fi networks, is sometimes not available or cost-prohibitive to meet the fire test requirements. The commenter recommended retaining § 111.60-3 largely as written. Based on our research for available products, the Coast Guard has determined that common types of cables that comply with the standards in § 111.60-1 are available and provide the safest option for U.S. vessels. Additionally, our research indicates the cost will be comparable to all other cable suitable for marine applications. Accordingly, this final rule retains the amendment from the NPRM to remove § 111.60-3. We will consider other cable on a case-by-case basis in accordance with the equivalency provisions of § 110.20-1.

§ 111.60-4 Minimum Cable Conductor Size

A commenter noted we did not propose changing the required minimum conductor size in this section of 0.82 square millimeters (mm

2

) and 2.1 mm

2

for control and power cable, respectively. The commenter explained that vessels inspected under the ACP

have a lesser conductor size requirement. For example, ABS MVR 4-8-2/7.7.2 allows smaller minimum conductor sizes of 0.5 mm

2

and 1.5 mm

2

for control and power cable respectively. (The metric dimensions given in this section are metric conversions of the standard American Wire Gauge sizes rather than standard metric wire sizes suggested by this commenter and used in the ABS rule.) The commenter recommended we decrease the metric size requirements to match the requirements applicable to ACP vessels because they believed doing so would eliminate the need to excessively oversize metric cable to meet rules that are currently written to align with common AWG sizes. Vessels enrolled in the ACP comply with a comprehensive set of engineering standards and an inspection regime that collectively provide a level of safety equivalent to complying solely with the regulations in 46 CFR even though the requirements are not identical. As the commenter noted, we did not propose substantive changes to this section in the NPRM and do not intend to change it in the final rule. Allowing smaller minimum conductor sizes on all vessels regulated by subchapter J is a less stringent requirement that we may consider in the future following additional analysis and opportunity for public comment. Presently, the metric conductor size requirements in this section are still considered reasonable and safe, and we made no additional changes based on this recommendation.

§ 111.60-6 Fiber Optic Cable (Existing)

In the NPRM, we proposed to remove current § 111.60-6 because fiber optic cable that complies with § 111.60-1 is now available. A commenter contended that such fiber optic cable is not readily available. We agree that it may be difficult to find fiber optic cable to meet the standards in § 111.60-1 and have decided to forgo the proposed change to remove §§ 111.60-2 and 111.60-6. This final rule does not remove existing §§ 111.60-2 and 111.60-6, or the cross references to §§ 111.60-2 and 111.60-6 within the applicable list of standards incorporated by reference in §§ 110.10-1(j)(14), 110.10-1(q)(23), 110.10-1(k)(34), 110.10-1(k)(35), and 110.10-1(j)(13), where they were already included. However, in this final rule we have updated the standards mentioned within §§ 111.60-2 and 111.60-6 to conform with updates to standards incorporated by reference within this subchapter.

§ 111.60-11 Wire

A commenter noted the reference to Section 5.7 of IEEE 45.8-2016 in § 111.60-11 and pointed out that this section does not address wire. We agree and have removed the reference to Section 5.7 of IEEE 45.8 from this section because it is not related to the topic of § 111.60-11. The commenter also suggested that wire constructed to a recognized commercial standard or military specification MIL-W-16878 or MIL-W-22759, with particular attention to the effects of vibration, moisture, ambient temperature, and other adverse conditions such as contaminants and oils that may be present should be acceptable. We agree in principle. Section 111.60-11(c) provides that wire must the requirements set out in one of three standards for wire and concludes with “or equivalent standard.” System designers choosing an alternative standard they believe equivalent, such as that described by the commenter, should discuss it with the MSC. There are too many relevant standards to incorporate them all. Instead, we have decided to offer three standards as guidance for acceptable wire requirements. We will consider equivalency requests in addition to the standards we incorporate by reference.

Subpart 111.70—Motor Circuits, Controllers, and Protection

§ 111.70-3 Motor Controllers and Motor-Control Centers

A commenter noted that the proposed regulatory text in the NPRM implied that we were making changes to §§ 111.70-3(c)(2) and (d)(1)(v) but the proposed regulatory text as presented in the NPRM was unchanged from existing regulatory text. This observation is correct. We erroneously included these sections in the NPRM's amendatory instructions, but we did not actually propose any changes. No changes were intended. This final rule does not include any amendments to the regulatory text at §§ 111.70-3(c)(2) and (d)(1)(v).

Subpart 111.75—Lighting Circuits and Protection

§ 111.75-17 Navigation Lights

In the NPRM, we proposed incorporating EN 14744 in § 111.75-17 as an additional alternative standard for navigation lights. Currently, UL 1104 is the only standard incorporated by reference in § 111.75-17. One commenter suggested that, since UL 1104 is no longer supported by UL and does not address electromagnetic interference or light-emitting diode (LED) light lifecycle degradation, it should be removed from this section and EN 14744 should be adopted as the sole standard for all navigation lights, including AC- and DC-powered lights, incandescent and non-incandescent lights, lights on all vessel types and sizes, and lights on inspected and non-inspected vessels.

We disagree with the suggestion to remove UL 1104. Several years ago, UL transferred responsibility for the maintenance of UL 1104 to the American Boat and Yacht Council (ABYC). Prior to this rulemaking, UL 1104 was the only standard for the construction and testing of navigation lights incorporated by reference in subchapter J, and it is currently being used by several navigation light manufacturers. Lights manufactured and certified to UL 1104 meet the current luminous intensity and colorimetric requirements of the International Regulations for Preventing Collisions at Sea, 1972 (1972 COLREGS). Additionally, the environmental performance requirements contained in UL 1104 are similar in intent to those in EN 14744. For these reasons, we are not removing UL 1104 at this time.

Additionally, we cannot incorporate by reference EN 14744 for all light and vessel types as suggested. The scope of this rule is limited to subchapter J. The navigation light requirements in subchapter J generally apply to larger, inspected commercial vessels. The requirements for navigation lights on certain smaller, inspected commercial vessels, uninspected commercial vessels, and recreational vessels are contained in other subparts of the CFR. We did not propose amendments to those subparts in the NPRM, and because of this we cannot incorporate by reference EN 14744 for all light and vessel types.

Since UL transferred UL 1104 to ABYC we have worked with ABYC and other navigation light stakeholders to develop an updated navigation light standard to replace UL 1104. This standard, ABYC C-5, Construction and Testing of Electric Navigation Lights, published in July 2021, too late for inclusion in the NPRM and after the NPRM comment period closed. ABYC C-5 is applicable to all light and vessel types and addresses both electromagnetic interference and LED light lifecycle degradation. We may address the incorporation by reference of ABYC C-5, a broader incorporation by reference of EN 14744, other potential navigation light standards, and navigation light requirements for all vessel types in a future, broader, Coast Guard proposal.

Subpart 111.83—Shore Connection Boxes

§ 111.83-7 High Voltage Shore Connection

A commenter noted that proposed new § 111.83-7 only applies the requirements of IEC/IEEE 80005-1:2019 to vessels required by law to have high voltage shore connections (HVSCs), and recommended removing that limitation. The Coast Guard agrees the proposed limitation to only vessels that were required by state or local law to connect to HVSC would have created unnecessary confusion. This section does not require compliance with IEC/IEEE 80005-1:2019; it is a recommendation for best practices and additional safety. For vessels that connect to electrical shore power using an HVSC, we recommend complying with IEC/IEEE 80005-1:2019 regardless of whether it is required by a state or local jurisdiction. For this reason, we have removed the limitation that § 111.83-7 would only apply to vessels required by law to have shore power and instead provide this section as a recommended standard for all vessels that use an HVSC.

Another commenter requested that the ABS Guide for High Voltage Shore Connection be considered for incorporation by reference as an alternative standard for HVSCs. We have not incorporated this guide. IEC/IEEE 80005-1:2019, which is incorporated by reference in the new § 111.83-7, is an international voluntary consensus standard that provides an acceptable baseline recommendation, while the ABS Guide for High Voltage Shore Connection is a classification society guide. Although the ABS Guide for High Voltage Shore Connection may be a satisfactory alternative for consideration in an equivalency request, it is not necessary to list a classification society guide in the regulations when an international voluntary consensus standard is available. The National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) directs Federal agencies to use voluntary consensus standards in their regulatory activities unless doing so would be inconsistent with applicable law or otherwise impractical.

Subpart 111.99—Fire Door Holding and Release Systems

§ 111.99-5 General

The NPRM proposed updating the existing citation in § 111.99-5 to reflect a more current edition of the International Convention for Safety of Life at Sea, 1974 (SOLAS), Sixth edition. A commenter noted that SOLAS II-2/9.4.1.1.5 includes a number of paragraphs that include requirements for safe functioning of the fire door release system. The commenter suggested that we expand § 111.99-5 to include these additional paragraphs in II-2/9.4.1.1.5 beyond that which was referenced in the NPRM. We understand that SOLAS contains additional requirements for fire doors. Vessels that comply with SOLAS must meet these requirements, but requiring all vessels that must comply with Subchapter J's requirements meet these standards would place regulatory requirements on these vessels without providing appropriate opportunity for public notice and comment. Accordingly, we did not incorporate this suggestion at this time.

Subpart 111.105—Hazardous Locations

One commenter suggested we remove the Division system for classification of hazardous locations from subchapter J. The commenter said that compliance would be simpler if only the Zone system was accepted. We disagree. This is an established system used extensively in North America and removing the Division system would adversely affect many equipment manufacturers.

Another commenter requested we incorporate by reference American Petroleum Institute (API) standards API RP 14FZ and API RP 500, and IEEE 1187-2013. As we discussed in regard to a comment on subpart 111.15, we are not inclined to incorporate IEEE 1187 because it contains additional requirements beyond what we believe necessary to incorporate at this time. API RP 14FZ and API RP 500 are already incorporated or will be incorporated in a very limited scope, which we have determined to be a reasonable level at which to require these standards.

§ 111.105-3 General Requirements and System Integrity

The intent of § 111.105-3 is to ensure all electrical equipment installed in a hazardous location is appropriate for the location. One commenter suggested that acceptable electrical components may be combined in a manner that may produce an assembly that can ignite a hazardous atmosphere and that this may not be caught in after-installation inspections. The commenter suggested several standards to address this concern, such as ANSI/UL 698A, IEC TS 60079-46, ANSI/UL 508A, and UL 2011. Additionally, the commenter suggested that this rule address the importance of assembly verification throughout the equipment lifecycle from design to installation. Assembly verification throughout the process is an important issue for system designers, but it is outside the scope of this rulemaking. Applicants must include assemblies of electrical equipment in plans and installation details in their request for Coast Guard review in accordance with §§ 110.25-1(i) and (j). The Coast Guard then reviews the plans and installation details to ensure safe assembly in accordance with these standards.

Several commenters requested clarification of the phrase “and not in combination in a manner that will compromise system integrity or safety,” proposed in the NPRM for new § 111.105-3(c). Additionally, commenters suggested that we reorganize § 111.105-3 to better separate equipment selection standards and installation requirements. Since its initial adoption in 1996, our intentions in § 111.105-5 (which we had proposed to move into § 111.105-3) have been to ensure that proper and safe equipment is used in hazardous locations and to allow safe combinations of equipment complying with either NFPA 70 (Division system) or the IEC 60079 series of standards (Zone system).

3

The phrase in question, located in § 111.105-3(c) in this final rule, ensures such systems are carefully designed because the methods of classification of hazardous locations can differ. When a location is subject to two classification systems, it may have two different classifications. For example, a specific cargo oil tank may be classified as a Class I, Division 1, location under one system and Zone 0 under the other. In this example, electrical equipment approved for Class I, Division 1 (intrinsically safe) or approved for Zone 0 (ia) may be installed in the cargo tank.

3

“Electrical Engineering Requirements for Merchant Vessels” interim rule (61 FR 28284, June 4, 1996).

In the NPRM we proposed to combine §§ 111.105-3 and 111.105-5 into § 111.105-3 to be consistent with §§ 111.106-3 and 111.108-3. This created confusion among commenters, and we have decided to revise our approach to proposed § 111.105-3. Instead, we have renumbered the proposed § 111.105-7 as § 111.105-3 and amended it to be more consistent with §§ 111.106-3 and 111.108-3 by adding notes after new paragraphs 111.105-3(b)(1) and (b)(2). This change better clarifies the appropriate guidance for using Zone equipment in Division-designated spaces or using Division equipment in Zone-designated spaces.

Additionally, as mentioned earlier, we will also require in § 110.25-1(i) that applicants clearly indicate the hazardous location method of classification, Division or Zone, in their plan submissions.

One comment suggested that it was more appropriate to incorporate by reference Clause 7 rather than Clause 6 of IEC 60092-502 in § 111.105-3(b). We disagree. Clause 6 concerns the requirements of electrical equipment in hazardous areas while Clause 7 addresses installation of electrical equipment in hazardous areas. The intent of § 111.105-3(b) is to prescribe the standards for electrical equipment intended for hazardous areas (locations), not specifically installation. This is the same as § 111.108(a)(3). It was not our goal for the proposed modifications to § 111.105 to substantively change the standards fundamental to equipment selection. In the existing regulations, in accordance with § 111.108-1(b), all vessels could use the standards specified in 46 CFR Subpart § 111.108. Revisions to § 111.105 are intended to make this clearer.

One comment noted that for electrical installations on mobile and fixed offshore units the proposed requirements only reference Clause 8 of IEC 61892-7. The commenter also noted that Clause 8 excludes guidance on cables and conduits and Clause 9 of IEC 61892-7 is for cables and wiring systems. This is correct. We intentionally did not reference Clause 9 for cables and wiring systems. Prior to this rulemaking, we previously incorporated Clause 6 of IEC 61892-7:2007. Clause 6 addresses electrical equipment in hazardous areas, but not wiring or cable systems. We proposed to incorporate by reference the more recent Clause 8 of IEC 61892-7:2019. Clause 8 similarly addresses electric equipment by referencing Clause 5 of IEC 60079-14:2013. It was not our intent to add wiring and cabling system requirements to § 111.105-3. The requirements for wiring and cable systems in hazardous locations are in § 111.105-17.

One commenter noted that both Clauses 8 and 9 of IEC 61892-7 reference IEC 60079-14, Electrical installations design, selection, and erection, and suggested that we should incorporate IEC 60079-14 by reference. We disagree with the suggestion. Since we incorporated by reference IEC 61892-7:2007 in 46 CFR subchapter J, the standard has evolved and been updated twice. In 2014, the IEC 61892-7 requirements for installations in hazardous area were rewritten based on the requirements of IEC 60079-14:2013. In the latest edition, 2019, IEC 61892-7 was completely rewritten and references are, to the extent possible, made to IEC 60079-14:2013 and to other relevant standards. At this time our intent is to only apply IEC 60092-14:2013 as it is referenced in Clause 8 of IEC 618792-7:2019. We describe Clause 8 in the previous paragraph. Despite the commenter mentioning Clause 9 of IEC 61892-7:2019, we did not propose to incorporate it in the NPRM. We already address the cable and wiring requirements using standards we deem sufficient in § 111.105-17. It is commonplace for standards to reference other standards, but incorporating every standard simply because it is cross-referenced would cause us to incorporate more standards than are reasonably necessary to convey the relevant requirements. A broader incorporation by reference of IEC 61892-7:2019 would require additional regulatory analysis and an additional opportunity for the public to review and comment.

§ 111.105-28 Internal Combustion Engines

A commenter said that § 111.105-28 states “Internal combustion engines installed in Class I Divisions 1 and 2 (Zones 1 and 2),” but there is no direct equivalency between Class I Division 1 and Zone 1 as Class I Division 1 covers equipment in Zone 0 as well. The commenter suggested that references to Class I Divisions (1 and 2) and Zones be removed from the section. We disagree with this suggestion. Currently, § 111.108-1(b) allows U.S. Mobile Offshore Drilling Units (MODUs), floating OCS facilities, and vessels other than Offshore Supply Vessels (OSVs) regulated under 46 CFR subchapter L and U.S. tank vessels that carry flammable and combustible cargoes, to comply with ASTM F2876 per § 111.108-3(g). Our purpose in changing § 111.105 is to improve the consistency of the regulations related to hazardous areas in §§ 111.105, 111.106, and 111.108. It does not change the requirements. Although we agree with the commenter's assertion that Class I Division I may also cover equipment in IEC Zone 0, internal combustion engine installations are generally prohibited for use in shipboard IEC Zone 0 areas.

A commenter noted that engines may be certified by the manufacturer to ASTM F2876 and its maximum surface temperature requirements. The commenter also noted that ASTM F2876 does not address different testing requirements from Zone 1 and Zone 2 applications. The primary purpose of ASTM F2876 is determining the maximum operating temperature of the engine, in order to ascertain the suitability of the engine installation in hazardous areas associated with the autoignition temperature of various flammable cargoes. An independent laboratory must certify all electrical equipment associated with the engine installation. Although ASTM F2876 contains other requirements in addition to temperature measurement, the references to EN 1834-1 within ASTM F2876 are recommendations only.

§ 111.105-50 Alternative Standard to the Classification of Hazardous Locations Requirements of This Subchapter

A commenter noted we proposed in the NPRM to incorporate IEC 60092-502 without also incorporating the Coast Guard's interpretations and additional requirements, issued in April 2009, which we maintain on the Coast Guard's website for the ACP.

4

The commenter did not offer an opinion or recommendation on this proposal, but asked us to clarify if these requirements in the IEC 60092-502 Supplement would be obsolete when we incorporate IEC 60092-502:1999. The intent of these interpretations and supplemental requirements was for vessels in the ACP to achieve equivalency with the regulations in 46 CFR. The Coast Guard has determined that IEC 60092-502, even without these interpretations and supplemental requirements, is a satisfactory alternative method for the classification of hazardous locations. When using IEC 60092-502 to classify hazardous locations, vessels no longer need to comply with our IEC 60092-502 Supplement issued in April 2009.

4

See U.S. Coast Guard Interpretation: IEC 60092-502:1999 Supplement at

https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/5ps/Alternate%20Compliance%20Program/iec60092-502sup.pdf.

A commenter said that our proposed incorporation by reference of IEC 60092-502:1999 as an alternative method for classification of hazardous location, while also referencing §§ 32.60-20(c) and 38.20-10, resulted in conflicting ventilation requirements. We agree that they can be conflicting. Unfortunately, existing U.S. and international requirements for cargo pump room ventilation are different. Sections 32.60-20(c) and 38.20-10 both require an air change every 3 minutes (20 air changes per hour) while Clause 8.1.3 of IEC 60092-502:1999 requires an air change every 2 minutes (30 air changes per hour). We intend for IEC 60092-502:1999 to be an alternative to existing regulations. At this time we are not changing 46 CFR subchapter D, including §§ 32.60-20(c) and 38.20-10,

nor modifying IEC 60092-502. System designers choosing to use IEC 60092-502:1999 for classification of hazardous locations must follow the standard. However, we are revising § 111.105-50(c) from what was proposed in the NPRM to clearly state when 30 air changes per hour are required. Specifically, if IEC 60092-502:1999 is used, cargo handling rooms and other spaces where hazardous location classification is dependent upon ventilation must have mechanical ventilation capable of at least 30 air changes per hour, based upon the gross volume of the space.

Subpart 112.05—General

§ 112.05-5 Emergency Power Source

Section 112.05-5(a) requires that an emergency power source have the capacity to simultaneously supply all loads connected to it. To further clarify this, in the NPRM we suggested adding the phrase “at a unity (1.0) service factor.” This simply means the emergency power source must be sufficiently sized to operate all loads at their full rated capacity.

A commenter requested we modify the required capacity of the emergency power source with a phrase such as “with due regard being paid to such services as may have to be operated simultaneously.” They stated that their proposed change would allow use of emergency generators that are more closely sized to the loads that would be needed in an emergency. We disagree with the commenter's proposed change. It would change the intent of the existing regulation by allowing more discretion and ambiguity than a specific load capacity measurement. In the interest of providing a clear discernable standard that we considered safe, we will proceed with requiring the unity 1.0 service factor as proposed in the NPRM.

In table 1 to § 112.05-5 footnote 2, we are replacing the reference to § 111.93 with a reference to § 58.25-65 because we moved the requirements in § 111.93 to § 58.25-65 in a previous rulemaking (60 FR 24776, May 10, 1995). Although we did not include this amendment in the NPRM, this is a conforming edit that will not have an impact on the existing emergency power requirements.

§ 112.05-7 Use of Emergency Generator in Port

A commenter noted that existing Coast Guard policy regarding in port use of the emergency generator requires that a qualitative failure analysis (QFA), design verification test procedure (DVTP), and a periodic safety test procedure (PSTP) be submitted for review, but the proposed § 112.05-7 did not have this requirement. This is correct. The requirements for these documents are contained in 46 CFR subchapter F Subpart 61.40. Based on this subpart, an emergency generator intended to meet § 112.05-7 for use in port would be required to submit a QFA, DVTP, and PSTP for review. We do not see the need to duplicate this requirement in § 112.05-7.

A commenter said we could require more comprehensive alarms in § 112.05-7(c) and requested that, at a minimum, we consider clarifying the alarms and shutdowns required versus the shutdowns allowed or disallowed. We understand the commenter's intent and request for more specific information, but this regulation provides the baseline requirements. We do not agree with revising the regulation to require additional alarm regulations at this time because we have determined that the baseline alarm requirements are still adequate.

A commenter noted that the proposed regulations regarding in-port use of the emergency generator at § 112.05-7(c) require the vessel be equipped with displays and alarms in the centralized control station and alarm monitoring at the engineers' quarters. The commenter pointed out that not all ships have a centralized control station or alarm summary panels in the crew's quarters. These regulations set the baseline requirements for in-port use of the emergency generator. If a system designer cannot meet the requirements due to unique ship characteristics, the designer may propose equivalent arrangements to the MSC in accordance with § 110.20-1. Our intent for these alarm location regulations is to require alarms both where the emergency generator is normally controlled and where crew would normally be located in port.

Additionally, two commenters noted that the NPRM did not discuss arrangements for feedback to power the vessel's main switchboard for habitability services and any special load analysis considerations or interlocks requirements for paralleling with main generators. Following our review, we find that there is not a need to include provisions on these points because the existing § 112.05-3(c) and the new § 112.05-7(g) both address use of the emergency generator to feedback to non-emergency loads and require either disconnection or automatic load shedding of these loads before the emergency generator is overloaded.

Another commenter was concerned that § 112.05-7(e) appeared to be describing requirements for breaker coordination to main services while using the emergency generator in port. This is true, and this coordination is not a new requirement. Subpart 111.51 requires coordinated protection and selective operation of overcurrent protective devices for all potential plant configurations, including this situation. Section 112.05-7(e) clarifies that in port use of the emergency generator is one of the configurations requiring coordination of overcurrent devices in accordance with § 111.51-5(a). Per the requirements of this rule, the power supply circuits for the use of an emergency generator in port must be arranged and protected to ensure that any electrical fault (except for the emergency generator and the emergency switchboard) will not affect the operation of the main and emergency services. The commenter was concerned this requirement could be interpreted to require full breaker coordination, which they believe is not feasible on many vessels with large distribution breakers from the main switchboard not designed to coordinate with a small power source such as the in-port generator. The commenter requested we remove references to protecting the main power system while using emergency generator in port from these regulations, noting that the intent of the rule is to ensure the availability of the emergency power system if it is being used as the power source while in-port. We understand the commenter's concerns, but, as explained in Section V.E, this provision has been accepted by IMO since 2005 and is similarly addressed in classification society rules. It is true that many of the provisions in this section are aimed at ensuring the availability of the emergency generator in port, but it is also important that the power circuits for the main distribution system are appropriately protected when powered by the emergency generator. We recognize that full coordination may not always be possible because of the large variation in short currents due to different operational conditions, but the coordination study must demonstrate main power system circuits connected to the emergency generator in port are adequately protected against short circuit. For these reasons we did not make any changes to the regulatory text originally proposed for § 112.05-7.

Subpart 112.15—Emergency Loads

§ 112.15-1 Temporary Emergency Loads

As provided in the NPRM, in § 112.15-1 we will now require an engineer's assistance-needed alarm as a

required temporary emergency load. A commenter correctly noted that adding the alarm as a temporary emergency load meant that it would also be a final emergency load. This is correct. In accordance with § 112.15-5(a), temporary emergency loads are also final emergency loads.

Regulatory Analysis Comments

A commenter asserted that table 3, “Affected U.S.-Flagged Vessel Population That Complies with 46 CFR Subchapter J,” on page 21462 of the NPRM, does not provide enough clarity to determine whether floating OCS facilities are excluded or included under the vessel count for “Cargo and Miscellaneous Vessels.” The commenter also encouraged the Coast Guard to make changes to the Marine Information for Safety and Law Enforcement (MISLE) database and Coast Guard documentation to ensure this and future rulemakings clarify whether floating OCS facilities are included or excluded.

Another commenter expressed a concern regarding table 3, suggesting that, despite what may be currently listed in MISLE, the latest tally of U.S.-flagged MODUs is less than 5, and likely comprises only the Helix Q4000 and Enterprise Offshore Drilling's EOD 201, and possibly the Spartan Rigs 202 and 303. The commenter suggested we revise table 3 of the proposed rule to read “<5” to more accurately reflect the scope of subchapter J's application to U.S.-flagged MODUs.

We agree with these commenters' assertions that we incorrectly counted the number of Cargo and Miscellaneous Vessels. Our MISLE database listed floating production systems as being inspected under Title 46 of the CFR, subchapter I-A. This is incorrect. As a result, we overstated the number of MODUs in the regulatory analysis (RA) for the proposed rule, which lowered the population of vessels in the “Cargo and Miscellaneous Vessels” category for the final rule. After further analysis, we revised the population of MODUs to one: the Helix Q4000. This is the only MODU in our MISLE database. Therefore, the number of MODUs for the final rule is one because we incorrectly classified the rest based on the subchapter inspection field in MISLE. We added the population of 41 floating production systems in our MISLE database to the final rule RA's category of “Cargo and Miscellaneous Vessels” inspected under subchapter I, which we present in table 4 of the RA. The number of vessels in this category increased from 576 in the proposed rule to 617 in the final rule. Because we updated the entire vessel population for this final rule, the total number of vessels increased from 5,570 in the proposed rule to 5,602 (see table 4).

V. Discussion of the Rule

A. Revisions to § 110.10-1 Incorporation by Reference

The standards that are incorporated by reference in subchapter J are listed in § 110.10-1. With this rule, the Coast Guard updates the technical standards to reflect more recent editions of the standards available to the public. We encourage the use of these updated standards because they reflect the best available technologies, practices, and procedures that are recommended by consensus bodies and other groups with experience in the industry. As the baseline upon which other standards, rules, and equivalency requests are evaluated, it is important that subchapter J incorporates up-to-date references.

We incorporate by reference the class rules of ABS, in particular, in multiple locations within subchapter J and throughout 46 CFR Chapter I. It is important to note that while these rules set the regulatory baseline or standard for specific engineering systems and equipment, the Coast Guard also designated several other authorized classification societies in accordance with 46 CFR part 8. These classification societies are listed on the Coast Guard website.

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The Coast Guard authorized the listed classification societies to perform certain functions and certifications using their respective class rules on vessels enrolled in the ACP. Vessels not enrolled in the ACP may propose using the class rules of an authorized classification society as an alternative to the ABS class rules incorporated by reference for particular engineering systems and equipment in accordance with § 110.20-1.

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See

https://www.dco.uscg.mil/Our-Organization/Assistant-Commandant-for-Prevention-Policy-CG-5P/Inspections-Compliance-CG-5PC-/Commercial-Vessel-Compliance/Flag-State-Control-Division/ClassSocAuth/.

Throughout § 110.10-1, we also add additional standards to provide alternative compliance options, remove outdated standards, and clarify existing requirements. Where applicable, we update the naming format, mailing addresses, phone numbers, and URL addresses for the standards already incorporated by reference. These updates will ensure that the standards are reasonably accessible to the public.

Following this paragraph, we list the standards we are updating, adding, or deleting in § 110.10-1. Within each standard listed, we describe the topics covered by the standard, the changes to the standard, any differences between currently incorporated IBR standards, and a list of the subparts or sections that reference the IBR standard. If this rule does not make any changes to a standard that is currently incorporated by reference, the standard will not be discussed in the revisions to § 110.10-1. However, it will be included, without change, in the regulatory text of § 110.10-1 that appears at the end of this document.

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ABS Rules for Building and Classing Marine Vessels (ABS Marine Vessel Rules), 2020.

The rules contain a comprehensive set of construction and maintenance requirements for ships and offshore facilities. The rules are, in general, developed by the International Association of Classification Societies (IACS) and by ABS staff, and reviewed and approved by committees made up of naval architects, marine engineers, shipbuilders, engine builders, steel makers and by other technical, operating, and scientific personnel associated with the worldwide maritime industry. Because of classification society rules' comprehensive nature and ABS's long history of ensuring vessel safety and seaworthiness, they are a valuable supplement to the numerous voluntary consensus standards incorporated by reference. In subchapter J the rules provide an option for the design of engineering systems and components including generators, semiconductor rectifiers, and electric propulsion systems. Specifically, we currently reference the 2003 edition in §§ 110.15-1(b), 111.01-9(b), 111.12-3, 111.12-5, 111.12-7(a) and (b), 111.33-11, 111.35-1, 111.70-1(a), 111.105-31(n), 111.105-39 introductory text and (a), 111.105-40(a) and (c), and 113.05-7(a). In 2020, ABS transitioned from the ABS Steel Vessel Rules to the ABS Marine Vessel Rules. This allowed ABS to consolidate several rules into one foundational rule. We incorporate by reference the 2020 ABS Marine Vessel Rules in the aforementioned sections and additionally in the new § 112.05-7(c) related to use of emergency generators in port. The ABS Marine Vessel Rules undergo an annual review and approval process by ABS technical committees. The Coast Guard participates on these committees, which are comprised of international experts with relevant experience. We are incorporating by reference the following parts of the ABS Marine Vessel Rules: Parts 1, 2, 3, 4, 5A, 5B, 5C, 5D, 6, and 7. Several of the sections of the ABS Marine Vessel Rules that we incorporate

by reference have been individually updated. For example:

○ ABS Marine Vessel Rules 4-8-3/Table 2: This table specifies minimum degrees of protection for electrical equipment. This updated table contains several technical updates since the 2003 edition, including additional notes concerning areas protected by fixed water-spray or water mist fire extinguishing systems, and equipment subject to water splash.

○ ABS Marine Vessel Rules 4-8-3: We reference this section for generator construction requirements. The updated edition contains technical updates to account for changes in technology since the 2003 edition.

○ ABS Marine Vessel Rules 4-8-5/5.17.9: This section regarding semiconductor rectifiers now requires a high temperature alarm.

○ ABS Marine Vessel Rules 4-8-5/5.5: This edition contains updates to propulsion generator requirements.

○ ABS Marine Vessel Rules 4-8-2/9.17: This edition updates the requirements for protection of motor circuits to address athwartship thruster motor load alarms and more clearly defines the systems requiring undervoltage release.

○ ABS Marine Vessel Rules 4-8-3/5: This updated section regarding switchboards and motor controllers contains additional cable connection requirements, optional alternative creepage and clearance distances, and additional requirements on battery and uninterruptible power systems based on advancements in technology.

○ ABS Marine Vessel Rules 5-10-4/3: This section regarding roll-on/roll-off cargo spaces is now titled 5C-10-4/3. The new edition made updates to ventilation requirements and to the tables of dangerous goods.

○ ABS Marine Vessel Rules 4-9-7/Table 9: This table regarding equipment testing is now titled 4-9-8/Table 1. The updates to this table reflect changes in technology and industry testing practices.

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ABS Rules for Building and Classing Mobile Offshore Units (ABS MOU Rules), Part 4 Machinery and Systems, 2020.

The rules contain a comprehensive set of construction and maintenance requirements for mobile offshore drilling units. In subchapter J the rules provide an option for the design of engineering systems and components including generator, semiconductor rectifier, and electric propulsion systems. Specifically, we currently reference the 2001 edition in §§ 111.12-1(a), 111.12-3, 111.12-5, 111.12-7(c), 111.33-11, 111.35-1, and 111.70-1(a). In 2020, ABS transitioned from the ABS Mobile Offshore Drilling Units Rules to the ABS MOU Rules. This allowed ABS to consolidate several rules into one foundational rule. By means of this rule, we incorporate by reference the 2020 ABS MOU Rules. Like the ABS Marine Vessel Rules, the ABS MOU Rules will undergo a regular review and approval process by the ABS technical committees comprised of international experts with relevant experience. ABS updated and changed the title of several of the ABS MOU rules incorporated by reference in these sections. For example:

○ ABS MOU Rules 4-3-4 (renamed ABS MOU Rules 6-1-7): We reference this section regarding generator construction requirements. ABS made several technical updates since the 2001 edition to account for changes in technology.

○ ABS MOU Rules 4-3-4/3.5.3 (renamed 6-1-7/12): We reference this section for semiconductor converters requirements. ABS made several updates to the standard due to changes in technology.

○ ABS MOU Rules 4-3-4/7.1 (renamed 6-1-7/9.9): We reference this section regarding bus bars and wiring requirements. ABS made several updates to the section since the 2001 edition.

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ANSI/IEEE C37.12-1991—American National Standard for Alternating Current (AC) High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis-Specifications Guide.

We remove this standard from § 111.54-1 because IEEE changed the title and republished it with updates in 2008 as IEEE C37.12-2008—IEEE Guide for Specifications of High-Voltage Circuit Breakers (over 1000 V), 2008. This represented a complete technical revision of the standard. IEEE subsequently revised it again in 2018. We incorporate by reference IEEE C37.12-2018 in § 111.54-1 and further discuss this standard with the other IEEE standards incorporated by reference.

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ANSI/IEEE C37.27-1987 (IEEE 331)—Application Guide for Low-Voltage AC Nonintegrally Fused Power Circuitbreakers (Using Separately Mounted Current-Limiting Fuses).

We remove the reference to this standard in § 111.54-1 because this guide was replaced by IEEE C37.27—2015—IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting Fuses, 2015. We discuss this standard, IEEE C37.27—2015, with the other IEEE standards incorporated by reference.

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ANSI/ISA-RP12.06.01-2003

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Recommended Practice for Wiring Methods for Hazardous (Classified) Locations Instrumentation Part 1: Intrinsic Safety.

This recommended practice provides guidance on installation of intrinsically safe systems for use in hazardous (classified) locations. It clarifies and explains the requirements of Articles 504 and 505 of NFPA 70 (National Electrical Code). This recommended practice supersedes ISA RP 12.6-1995. By means of this rule, we delete ISA RP 12.6 from reference in § 111.105-11 and replace it with ANSI/ISA-RP12.06.01-2003.

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ANSI/ISA 12.12.01-2015—Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations.

The purpose of this standard is to provide minimum requirements for the design, construction, and marking of electrical equipment or parts of such equipment for use in Class I and Class II, Division 2 and Class III, Divisions 1 and 2 hazardous (classified) locations. This newer edition of the standard replaces ANSI/ISA 12.12.01-2012, which the Coast Guard recently added to § 111.108-3(b) as part of a separate rulemaking titled “Electrical Equipment in Hazardous Locations” (80 FR 16980, Mar. 31, 2015). Additionally, we include ANSI/ISA 12.12.01-2015 in §§ 111.105-3(b) and 111.106-3(b) as another certification option for electrical equipment in hazardous location. The 2015 edition contains minor technical changes from the 2012 edition.

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ANSI/ISA-60079-18—Explosive atmospheres—Part 18: Equipment protection by encapsulation “m”, Third Edition, 2012.

This standard gives the specific requirements for the construction, testing, and marking of electrical equipment and parts of electrical equipment, and for the designation of explosion-protected electrical apparatus complying with IEC standards (Ex) components (which is part of an electrical equipment module found in the European hazardous area scheme) with the type of protection encapsulation “m” intended for use in explosive gas atmospheres or explosive dust atmospheres. We currently reference the 2009 edition of this standard in § 111.106-3(d), and the 2012 edition in § 111.108-3(e). This rule removes the ANSI/ISA-60079-18 references in §§ 111.106-3(d) and 111.108-3(e) because the standard has been withdrawn and replaced by UL 60079-18, a substantively similar standard. We replace the ANSI/ISA standard with UL 60079-18 in § 111.106-3(d) and 111.108-3(e).

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API Recommended Practice (RP) 14F—Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Division 1 and Division 2 Locations, Sixth Edition, October 2018.

This document recommends minimum requirements and guidelines for the design, installation, and maintenance of electrical systems on fixed and floating petroleum facilities located offshore. By means of this rule, we reference clause 6.8 of the document in § 111.105-17. This clause provides guidance on use of conduit, cable seals, and sealing methods. The incorporation of this standard adds another wiring option in hazardous locations.

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API RP 14FZ—Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Zone 0, Zone 1, and Zone 2 Locations, Second Edition, May 2013.

This document recommends minimum requirements and guidelines for the design, installation, and maintenance of electrical systems on fixed and floating petroleum facilities located offshore. By means of this rule, we reference clause 6.8 of the document in § 111.105-17. This clause provides guidance on use of conduit, cable seals, and sealing methods. The incorporation of this standard adds another wiring option in hazardous locations.

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API RP 500—Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, Third Edition, December 2012 with errata January 2014.

This recommended practice provides guidelines for classifying locations at petroleum facilities as Class I, Division 1 and Class I, Division 2 locations for the selection and installation of electrical equipment. We currently reference the second edition (1997) of this standard in §§ 111.106-7(a) and 111.106-13(b). By means of this rule, we reference instead the more recent, third edition (2012) in those sections. The 2012 edition contains editorial changes, but the technical content has not changed.

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API RP 505—Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2, Second Edition, August 2018.

The purpose of this recommended practice is to provide guidelines for classifying locations Class I, Zone 0, Zone 1, and Zone 2 at petroleum facilities for the selection and installation of electrical equipment. We currently reference the first edition, which was published in 1997 and reaffirmed in 2013, in § 111.106-7(a) and 111.106-13(b). By means of this rule, we reference instead the more recent, second edition (2018) in those sections. This does not substantively change the requirements of those sections.

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ASME A17.1-2016/CSA B44-16—Safety Code for Elevators and Escalators: Includes Requirements for Elevators, Escalators, Dumbwaiters, Moving Walks, Material Lifts, and Dumbwaiters with Automatic Transfer Devices, reissued January 16, 2017 with errata.

This code covers the design, construction, operation, inspection, testing, maintenance, alteration, and repair of elevators, hoists, escalators and their associated parts, rooms, and spaces. We currently reference the sixteenth edition (2000) in § 111.91-1. By means of this rule, we reference instead the more recent, twenty-first edition (2016) in that section. ASME updated this standard based on changes in technology. The updated standard addresses new types of elevators being used in the industry, specifically wind turbine elevators and outside emergency elevators. In addition, the standard contains new requirements to address a new feature called “Elevator Evacuation Operation” that allows for the use of elevators for occupant evacuation. Moreover, there are several major changes to the standard that include seismic requirements, updated maintenance control program requirements, and revisions regarding qualifications for elevator inspectors. ASME A17 has been an industry accepted standard since 1921. Although many of the changes to the presently incorporated edition of the standard do not apply to shipboard elevators, it is important that shipboard elevators meet the updated provisions that do apply.

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ASTM B117—19 Standard Practice for Operating Salt Spray (Fog) Apparatus, 2019.

This practice covers the apparatus, procedure, and conditions required to create and maintain the salt spray (fog) test environment. Where the Coast Guard's regulations require material to be corrosion-resistant it must meet the testing requirements of this ASTM standard practice. We currently reference the 1997 edition in § 110.15-1(b). By means of this rule, we reference instead the 2019 edition. The 1997 edition has been superseded by several subsequent editions. ASTM made the following changes over the recent editions of this standard that are ultimately incorporated into the 2019 version we adopt in this rulemaking. The testing specifications in the 2011 edition are similar to those in the 1997 edition, but the 2011 edition is more detailed. For example, the impurity restrictions are more detailed in section 8, the air supply requirements are more specific in section 9, and the conditions in the salt chamber are more precisely described in section 10. The 2016 edition added a warning about the impact of water conductivity in section 4 while the 2019 edition added several minor but non-substantive explanatory sections. Overall, the 2019 edition of this testing standard practice for operating salt spray apparatus is very similar to the 1997 edition currently incorporated, with minor improvements in the specifications to ensure testing consistency and precision.

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ASTM F2876-10—Standard Practice for Thermal Rating and Installation of Internal Combustion Engine Packages for use in Hazardous Locations in Marine Applications, Reapproved 2015.

This practice covers the method of testing, rating, and installing internal combustion engine packages for use in hazardous areas in marine applications. We currently reference the 2010 edition of this standard in §§ 111.106-3(h) and 111.108-3(g). By means of this rule, we also reference the 2010 edition in new § 111.105-28 regarding internal combustion engines. This ensures a consistent standard for these installations on all vessel and facility types.

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CSA C22.2 No. 30-M1986—Explosion-proof enclosures for use in class I hazardous locations, Reaffirmed 2016.

This standard covers the details of construction and tests for explosion-proof enclosures for electrical equipment to be used in Class I, Division 1, Groups A, B, C, and D hazardous locations and in gaseous mines. We currently reference the 1986 edition of this standard in §§ 111.106-3(b) and 111.108-3(b) and by means of this rule incorporate instead the reaffirmed version therein. The two versions are not substantively different. We also reference this reaffirmed standard in § 111.105-3(b), regarding approved equipment, as an additional compliance option. This affords the broadest and most current selection of IBR explosion protection standards for all vessel and facility types.

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CSA C22.2 No. 213-16—Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations, May 2016.

This standard provides the details of construction and testing of electrical

equipment for use in Class I and II, Division 2 and Class III, Division 1 and 2 hazardous locations. We currently reference the 1987 edition in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we reference instead the 2016 edition in these sections and also in § 111.105-3(b) concerning approved equipment. This standard received a major revision since the 1987 edition based on advances in technology and changes to related standards. It is an accepted national standard and one of several available standards for nonincendive electrical equipment. Our incorporation of this updated edition ensures use of latest industry practices and including it in § 111.105-3 ensures that standards are consistent for electrical installations on all vessel and facility types.

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CSA-C22.2 No. 0-10—General requirements—Canadian Electrical Code, Part II, including Update No. 2, dated November 2014, Reaffirmed 2015.

This standard covers definitions, construction requirements, marking, and tests of a general nature that applies to all or several of the individual standards of the Canadian Electrical Code. We currently reference the ninth edition of this standard in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we reference instead the tenth edition, reaffirmed in 2015, in these sections and in § 111.105-3(b) concerning approved equipment. The tenth edition includes new requirements for equipment containing lasers or lithium batteries, criteria for the use of adhesives in the construction of electrical equipment, surface temperature limits, attachment plug loading, and the maximum temperature of equipment in contact with gypsum. Additionally, it incorporates a comprehensive list of definitions for use in standards for electrical products and outlines the relationship between this standard and electrical product standards. We incorporate this more recent edition in subpart 111.105 to ensure that standards are consistent for electrical installations on all vessel and facility types.

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CAN/CSA-C22.2 No. 157-92—Intrinsically safe and nonincendive equipment for use in hazardous locations, including Update No. 2, dated June 2003, reaffirmed 2016.

This standard specifies the testing of nonincendive electrical equipment and the details of construction and tests for intrinsically safe electrical equipment for use in hazardous locations. We currently reference the 1992 edition of this standard, which is not substantively different from the reaffirmed edition, in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we reference instead the reaffirmed 1992 edition in those sections. In addition, we are adding a reference to the reaffirmed edition in § 111.105-3(b) concerning approved equipment, which provides an additional option for vessels and facilities.

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MIL-DTL-24640C with Supplement 1—Detail Specification Cables, Lightweight, Low Smoke, Electric, for Shipboard Use, General Specification for, Nov. 8, 2011.

This military specification provides the details of construction and testing of lightweight, low smoke, electric cables for Navy shipboard applications and is also used aboard commercial vessels. Incorporating this specification by reference allows manufacturers access to both military and commercial markets without the cost of unnecessary additional testing to a similar voluntary consensus standard. MIL-DTL-24640C is already incorporated by reference and approved for § 111.106-5(a). However, MIL-DTL-24640C supersedes MIL-C-24640A (1996), currently referenced in §§ 111.60-1 and 111.60-3. We incorporate the updated edition, MIL-DTL-24640C (2011), into § 111.60-1 only, because this rule deletes § 111.60-3. The updated edition, published in 2011, incorporates the latest developments in marine cable materials and performance enhancements but will not substantively change requirements. Supplement 1 includes lists of associated specification sheets and cables.

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MIL-DTL-24643C (as updated by Supplement 1A)—Detail Specification Cables, Electric, Low Smoke Halogen-Free, for Shipboard Use, General Specification for, Oct. 1, 2009 (including Supplement 1A dated Dec. 13, 2011).

This military specification is already incorporated by reference in § 111.106-5(a) and provides the details of construction and testing of low-smoke halogen-free electric cable for Navy shipboard applications and is also used aboard commercial vessels. Incorporating this specification by reference allows manufacturers access to both military and commercial markets without the cost of unnecessary additional testing to a similar voluntary consensus standard. This specification supersedes the currently referenced MIL-C-24643A (1996) incorporated by reference in §§ 111.60-1 and 111.60-3. We delete references to MIL-C-24643A (1996) and incorporate the latest standard MIL-DTL-24643C (2011) into § 111.60-1 only, because this rule rescinds § 111.60-3. This updated edition, published in 2011, incorporates the latest developments in marine cable materials and performance enhancements. Supplement 1 includes lists of associated specification sheets and cables.

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MIL-DTL-76E—Military Specification Wire and Cable, Hookup, Electrical, Insulated, General Specification for, Nov. 3, 2016.

This specification provides the standards for construction and testing of single-conductor, synthetic-resin insulated, electrical hookup wire and cable for use in the internal wiring of electrical and electronic equipment. Incorporating this specification by reference allows manufacturers access to both military and commercial markets without the cost of unnecessary additional testing to a similar voluntary consensus standard. We currently reference MIL-W-76D in § 111.60-11. In 2016 the standard was revised and renamed MIL-DTL-76E. This edition has formatting changes and minor updates based on current technology. We incorporate this revised standard as one of several available standards for wire.

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EN 14744—Inland navigation vessels and sea-going vessels—Navigation light, English Version, August 2005.

This standard, developed by the European Committee for Standardization, provides the details for construction and testing of vessel navigation lights. By means of this rule, we include it as an acceptable alternate standard for navigation lights in § 111.75-17(d)(2).

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FM Approvals Class Number 3600—Approval Standard for Electrical Equipment for Use in Hazardous (Classified) Locations—General Requirements, 2018.

This standard identifies the basis for approval of electrical equipment in hazardous (classified) locations. It is used in conjunction with the other FM Approvals standards referenced in subchapter J. We currently reference the 1998 edition of this standard in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we incorporate instead the more recent 2018 edition for §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). This edition includes transitioning from ISA series of standards to UL standards, an expanded list of normative references, and more specificity regarding the required quality control system. The incorporation of this more recent edition ensures use of the latest industry practices and including it in § 111.105-3(b) regarding approved equipment ensures that standards are consistent for electrical installations on all vessel and facility types.

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FM Approvals Class Number 3610—Approval Standard for

Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations, January 2018.

This standard provides requirements for the construction and testing of electrical apparatus, or parts of such apparatus, whose circuits are incapable of causing ignition in Classes I, II, and III, Division 1 hazardous (classified) locations. We currently reference the 2004 edition of this standard in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we incorporate instead the more recent 2018 edition in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). The incorporation of this more recent edition ensures use of latest industry practices and including it in § 111.105-3(b) regarding approved equipment ensures that standards are consistent for electrical installations on all vessel and facility types.

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FM Approvals Class Number 3611—Approval Standard for Nonincendive Electrical Equipment for Use in Class I and II, Division 2, and Class III, Divisions 1 and 2, Hazardous (Classified) Locations, January 2018.

This standard provides requirements for the construction and testing of electrical apparatus, or parts of such apparatus, whose circuits are incapable of causing ignition in Class I and II, Division 2, and Class III, Divisions 1 and 2 hazardous (classified) locations. This standard is currently referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we add this as an alternative standard in § 111.105-3(b) concerning approved equipment. This ensures that standards are consistent for electrical installations on all vessel and facility types.

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FM Approvals Class Number 3615—Approval Standard for Explosion-proof Electrical Equipment General Requirements, January 2018.

This standard contains the basic requirements for the construction and testing of explosion-proof electrical apparatus. This standard is currently referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we add this as an alternative standard in § 111.105-3(b) regarding approved equipment. This ensures that standards are consistent for electrical installations on all vessel and facility types.

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FM Approvals Class Number 3620—Approval Standard for Purged and Pressurized Electrical Equipment for Hazardous (Classified) Locations, January 2018.

This standard contains the basic requirements for the construction and testing of purged and pressurized electrical equipment. We currently reference the 2000 edition of this standard in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we reference instead the 2018 edition in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). The two editions of the standard are not substantively different and adding it to § 111.105-3(b) ensures consistent standards for electrical installations on all vessel and facility types.

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IEEE Std. C37.04-2018—IEEE Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage above 1000 V, approved December 5, 2018.

This document establishes a rating structure, preferred ratings, construction, and functional component requirements for high-voltage AC circuit breakers. We currently reference the 1999 edition of this standard in § 111.54-1. By means of this rule, we reference instead the 2016 edition in § 111.54-1. This more recent edition contains updates that reflect current circuit breaker manufacturing technology.

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IEEE Std. C37.010-2016—IEEE Application Guide for AC High-Voltage Circuit Breakers >1000 Vac Rated on a Symmetrical Current Basis, approved September 22, 2016.

This document provides guidance for the application of high-voltage circuit breakers. We currently reference the 1999 edition of this standard in § 111.54-1. By means of this rule, we reference instead the 2016 edition in § 111.54-1. This more recent edition contains updates that reflect current circuit breaker manufacturing technology.

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IEEE Std. C37.12-2018—IEEE Guide for Specifications of High-Voltage Circuit Breakers (over 1000 V), approved December 5, 2018.

These specifications apply to all indoor and outdoor types of AC high-voltage circuit breakers rate above 1000 volts (V). It replaces ANSI/IEEE C37.12-1991. IEEE C37.12-2018 represents a nearly complete rewrite of 1991 edition to reflect present circuit breaker manufacturing technology. The 2018 edition of this standard is one of several acceptable circuit breaker standards listed in § 111.54-1.

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IEEE Std. C37.13-2015—IEEE Standard for Low-Voltage AC Power Circuit Breakers Used in Enclosures, approved 5 Dec. 2015.

This standard establishes minimal functional requirements, establishes preferred rating structure, and provides preferred ratings enclosed low-voltage AC power circuit breakers. We currently reference the 2000 edition of this standard in § 111.54-1. By means of this rule, we reference instead the 2015 edition in § 111.54-1. This more recent edition has many technical updates to address advancements in technology, including an increase in nominal voltages, new testing techniques, and removal of information on DC circuit-breakers (now located in IEEE C37.14). This standard is one of several acceptable circuit-breaker standards in § 111.54-1.

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IEEE Std. C37.14-2015—IEEE Standard for DC (3200 V and below) Power Circuit Breakers Used in Enclosures, approved 26 Mar. 2015.

This standard covers the preferred ratings and testing requirements of enclosed DC power circuit breakers. We currently reference the 2003 edition of this standard § 111.54-1. By means of this rule, we reference instead the more recent 2015 edition in § 111.54-1, which contains many technical changes to reflect present circuit breaker manufacturing technology and advancements in technology.

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IEEE Std. C37.27-2015—IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting Fuses, approved December 5, 2015.

This guide sets forth recommendations for the selection of current-limiting fuses for use in combination with low-voltage AC power circuit breakers. This guide replaces ANSI/IEEE C37.27-1987, which we currently reference in § 111.54-1. IEEE C37.27-2015 contains many technical updates to address advancements in circuit breaker manufacturing technology, which provide the public with more accurate and applicable standards for modern circuit breakers than the previous 1987 edition. We incorporate this guide as one of several acceptable circuit breaker standards listed in § 111.54-1.

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IEEE Std. 45-1998—IEEE Recommended Practice for Electric Installations on Shipboard—1998.

IEEE 45-2002 superseded the 1998 edition, but in some instances the Coast Guard previously found the 1998 edition preferable and continued to reference it. Because the 1998 edition is no longer supported by IEEE and other acceptable standards exist, we delete all references to this standard, which is currently referenced in §§ 111.30-19, 111.105-3, 111.105-31, and 111.105-41.

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IEEE Std. 45-2002—IEEE Recommended Practice for Electrical Installations On Shipboard—2002.

We currently reference this edition of IEEE 45 in the following sections in subchapter J: §§ 111.05-7, 111.15-2, 111.30-1, 111.30-5, 111.33-3, 111.33-5, 111.40-1, 111.60-1, 111.60-3, 111.60-5, 111.60-11, 111.60-13, 111.60-19, 111.60-21, 111.60-23, 111.75-5, and 113.65-5. IEEE has developed the IEEE 45 Series, which comprises nine recommended practices addressing electrical installations on ships and

marine platforms. We replace references to IEEE 45-2002 with newer IEEE 45 Series recommended practices, individually discussed below, in those sections (except in § 111.60-11 because the IEEE 45 does not address wire-related issues that were previously covered by IEEE 45).

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IEEE Std. 45.1-2017—IEEE Recommended Practice for Electrical Installations On Shipboard—Design, approved 23 Mar. 2017.

This recommended practice provides guidance for electrical power generation, distribution, and electric propulsion system design. These recommendations reflect the present-day technologies, engineering methods, and engineering practices. By means of this rule, we reference this standard in §§ 111.15-2, 111.40-1, 111.75-5, and 113.65-5. The technical content is similar to IEEE 45-2002, which we delete from these sections. We also add a reference to this standard in § 111.105-41 concerning battery rooms.

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IEEE Std. 45.2-2011—IEEE Recommended Practice for Electrical Installations On Shipboard—Controls and Automation, approved 10 Sep. 2011.

This recommended practice provides guidance for shipboard controls, control applications, control apparatus, and automation. These recommendations reflect present-day technologies, engineering methods, and engineering practices. By means of this rule, we reference this document in §§ 111.33-3 and 111.33-5. The technical content is similar to IEEE 45-2002, which we delete from these sections.

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IEEE Std. 45.6-2016—IEEE Recommended Practice for Electrical Installations on Shipboard—Electrical Testing, approved 7 Dec. 2016.

This recommended practice provides guidance for electrical testing for power generation, distribution, and electric propulsion systems. These recommendations reflect present-day technologies, engineering methods, and engineering practices. By means of this rule, we reference this document in § 111.60-21. Its technical content is similar to IEEE 45-2002, which we delete from this section.

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IEEE Std. 45.7-2012—IEEE Recommended Practice for Electrical Installations On Shipboard—AC Switchboards, approved 29 Mar. 2012.

This recommended practice supplements the design, installation, and testing recommendations in IEEE 45-2002. This recommended practice provides new technologies and design practices for generator control panels and switchboards to aid marine electrical engineers in the design, application, and installation of this equipment on ships and other marine installations. By means of this rule, we reference this document in §§ 111.30-1, 111.30-5, and 111.30-19. The technical content of IEEE 45.7-2012 is similar to IEEE 45-2002, but more detailed. It also references other industry standards, many of which we have incorporated by reference elsewhere in subchapter J.

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IEEE Std. 45.8-2016—IEEE Recommended Practice for Electrical Installations On Shipboard—Cable Systems, approved 29 Jan. 2016.

This document provides recommendations for selection, application, and installation of electrical power, signal, control, data, and specialty marine cable systems on shipboard systems. These recommendations include present-day technologies, engineering methods, and engineering practices. By means of this rule, we replace references to IEEE 45-2002 with IEEE 45.8-2016 in §§ 111.05-7, 111.60-5, 111.60-13, and 111.60-19. The technical content of IEEE 45.8-2016 is similar to IEEE 45-2002, but more detailed.

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IEEE Std. 1202-2006—IEEE Standard for Flame-Propagation Testing of Wire and Cable with Corrigendum 1, reaffirmed December 5, 2012, Corrigendum 1 approved October 19, 2012.

This standard provides a protocol for exposing cable samples to a theoretical 20 kilowatt (kW) [70,000 British thermal units per hour] flaming ignition source for a 20-minute test duration. The test determines the flame propagation tendency of single conductor and multi-conductor cables intended for use in cable trays. We currently reference the 1991 edition in §§ 111.60-6 and 111.107-1(c). By means of this rule, we reference instead the more recent 2006 edition in §§ 111.60-6 and 111.107-1(c). In the 2006 edition, the normative references have been updated, the temperature at which cables are conditioned has been raised from 18 °C to 25 °C, and minor refinements to the test procedure have been made.

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IEEE Std. 1580-2010—IEEE Recommended Practice for Marine Cable for Use on Shipboard and Fixed or Floating Facilities, approved 30 Sep. 2010.

This recommended practice contains the requirements for single or multiconductor cables, with or without metal armor or jacket, and rated 300 V to 35 kilovolts (kV), intended to be installed aboard marine vessels, and fixed and floating offshore facilities. The 2001 edition is currently referenced in §§ 111.60-1, 111.60-2, 111.60-3, and 111.106-5(a). By means of this rule, we reference instead the more recent 2010 edition only in §§ 111.60-1, 111.60-2, and 111.106-5(a) because we delete § 111.60-3 in this rule. The 2010 edition has been updated to incorporate the latest developments in marine cable materials and performance enhancements.

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IEC 60068-2-52:2017—Environmental testing Part 2-52: Tests—Test Kb: Salt mist, cyclic (sodium chloride solution), Edition 3.0, 2017-11.

This standard specifies the application of the cyclic salt mist test to components or equipment designed to withstand a salt-laden atmosphere as salt can degrade the performance of parts manufactured using metallic or non-metallic materials. The second edition is referenced in § 110.15-1. By means of this rule, we incorporate instead the third edition. In this more recent edition, the standard has been updated to ensure consistency with SO 9227—Corrosion tests in artificial atmospheres—Salt spray tests.

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IEC 60079-0—Electrical apparatus for Explosive Gas Atmospheres—Part 0: General Requirements, Edition 3.1, 2000.

This part of the IEC 60079 series of standards specifies the general requirements for construction, testing, and marking of electrical equipment and Ex components intended for use in explosive atmospheres. This standard was referenced in §§ 111.105-1, 111.105-3, 111.105-5, and 111.105-17. By means of this rule, we will reformat subpart 111.105 to be consistent with subparts 111.106 and 111.108 and will no longer specifically reference IEC 60079-0.

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IEC 60079-1:2014—Explosive atmospheres—Part 1: Equipment protection by flameproof enclosures “d”, Edition 7.0, 2014-06.

This part of the IEC 60079 series of standards contains specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure “d”, which are intended for use in explosive gas atmospheres. We currently reference the fourth edition (2001) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-9, and 111.105-17 while the sixth edition (2007) is referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we remove all references to the fourth and sixth editions of this standard, and replace them with the more recent edition 7.0 (2014) in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). The updated standard reflects advances in technology, including:

○ Addition of material limitations of enclosures of equipment and enclosures of Ex components for external mounting;

○ Addition of power factor requirement for evaluating the ability of a plug and socket to remain flameproof during the arc-quenching period while opening a test circuit; and

○ Addition of marking requirements for Ex component enclosures, in addition to the requirements for marking of Ex components given in IEC 60079-0.

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IEC 60079-2:2014—Explosive atmospheres—Part 2: Equipment protection by pressurized enclosures “p”, with Corrigendum 1 (2015), Edition 6.0, 2014-07.

This part of the IEC 60079 series of standards contains specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection “p”, intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized enclosures containing a limited release of a flammable substance. We currently reference the fourth edition (2001) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, and 111.105-17, while the fifth edition (2007) is referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we delete all references to the fourth and fifth edition. The more recent edition 6.0 (2014) is incorporated in §§ 111.105-3(b), 111.105-17, 111.106-3(b), and 111.108-3(b). The updated standard now covers combustible dust, cells and batteries, and backup protective gas. The incorporation of the more recent edition ensures consistent, up-to-date standards for electrical installations on all vessel and facility types.

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IEC 60079-5:2015—Explosive atmospheres—Part 5: Equipment protection by powder filling “q”, Edition 4.0, 2015-02.

This part of the IEC 60079 series of standards contains specific requirements for the construction, testing, and marking of electrical equipment, parts of electrical equipment, and Ex components in the type of protection powder filling “q”, intended for use in explosive gas atmospheres. We currently reference the second edition (1997) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-15, and 111.105-17, while the third edition (2007) is referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we delete all references to the second and third edition. The more recent edition 4.0 (2015), containing minor technical revisions and clarifications, is incorporated into §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). This will ensure consistent, up-to-date standards for electrical installations on all vessel and facility types but will not result in a substantive change to the current requirements.

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IEC 60079-6:2015—Explosive atmospheres—Part 6: Equipment protection by liquid immersion “o”, Edition 4.0, 2015-02.

This part of the IEC 60079 series of standards specifies the requirements for the design, construction, testing and marking of Ex equipment and Ex components with type of protection liquid immersion “o” intended for use in explosive gas atmospheres. We currently reference the second edition (1995) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-15, and 111.105-17, while the third edition (2007) is referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we delete all references to the second and third edition. The more recent edition, 4.0 (2015), will be added to §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). The incorporation of the latest edition ensures consistent, up-to-date standards for electrical installations on all vessel and facility types. The latest edition represents a major technical revision of the requirements for oil immersion “o”. These revisions include:

○ The redefinition of the requirements for oil immersion “o” into liquid immersion levels of protection “ob” and “oc”;

○ The addition of the ability to protect sparking contacts to both “ob” and “oc”; and

○ The introduction of additional requirements for the protective liquid.

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IEC 60079-7:2015—Explosive atmospheres—Part 7: Equipment protection by increased safety “e”, with Amendment 1 (Consolidated Version), Edition 5.1, 2017-08.

This part of the IEC 60079 series of standards specifies requirements for the design, construction, testing, and marking of electrical equipment and Ex components with type of protection increased safety “e” intended for use in explosive gas atmospheres. We currently reference the third edition (2001) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-15, and 111.105-17, while the fourth edition (2006) is referenced in § 111.106-3(b) and 111.108-3(b). By means of this rule, we remove all references to the third and fourth editions of this standard. The more recent consolidated edition 5.1 with amendment 1 (2017) is added to §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). The standard contains updates including the addition of terminal installation tests, the addition of solid insulating material requirements based on thermal stability, and the revision of the requirements for soldered connections. The incorporation of the more recent edition ensures consistent, up-to-date standards for electrical installations.

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IEC 60079-11:2011—Explosive atmospheres—Part 11: Equipment protection by intrinsic safety “i” with Corrigendum 1 (January 2012), Edition 6.0, 2011-06.

This part of the IEC 60079 series of standards specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits that enter such atmospheres. This type of protection applies to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres. We currently reference the fourth edition (1999) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-11, and 111.105-17. The fifth edition (2006) is currently referenced in § 111.106-3(b), and the more recent IEC 60079-11:2011, Edition 6.0, is referenced in § 111.108-3(b). By means of this rule, we remove all references to the fourth and fifth editions and adopt the more recent edition 6.0 with corrigendum 1 (2012), for §§ 111.105-3(b) and 111.106-3(b), as well as retaining it in § 111.108-3(b). The changes with respect to the previous editions are as follows:

○ Inclusion of non-edition specific references to IEC 60079-0;

○ Merging of the apparatus requirements for the Fieldbus Intrinsically Safe Concept (FISCO) from IEC 60079-27;

○ Merging of the requirements for combustible dust atmospheres from IEC 61241-11;

○ Clarification of the requirements for accessories connected to intrinsically safe apparatus (such as chargers and data loggers);

○ Addition of new test requirements for opto-isolators; and

○ Introduction of Annex H about ignition testing of semiconductor limiting power supply circuits.

The incorporation of the more recent edition ensures consistent, up-to-date standards for electrical installations.

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IEC 60079-13:2017—Explosive atmospheres—Part 13: Equipment protection by pressurized room “p” and artificially ventilated room “v”, Edition 2.0, 2017-05.

This part of the IEC 60079 series of standards gives requirements for the design, construction, assessment, and testing, and marking of rooms protected by pressurization. We currently reference Edition 1.0 (2010) of this standard in §§ 111.106-3(b) and

111.108-3(b). By means of this rule, we reference instead Edition 2.0 (2017), the more recent edition, in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). This standard contains the following changes:

○ Modification of the title to include artificially ventilated room “v” in addition to pressurized room “p”;

○ Addition of protection types (“pb”, “pc”, and “vc”);

○ Removal of protection types (“px”, “py”, “pz” and “pv”);

○ Definition of the differences between pressurization and artificial ventilation types of protection;

○ Removal of protection of rooms with an inert gas or a flammable gas from the scope of standard; and

○ Addition of an informative annex to include examples of applications where types of protection pressurization or artificial ventilation or pressurization and artificial ventilation can be used and associated guidelines.

The incorporation of the more recent edition ensures consistent, up-to-date standards for electrical installations.

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IEC 60079-15:2017—Explosive atmospheres—Part 15: Equipment protection by type of protection “n”, Edition 5.0, 2017-12.

This part of the IEC 60079 series of standards specifies requirements for the construction, testing, and marking for Group II electrical equipment with type of protection “n” intended for use in explosive gas atmospheres. This standard applies to non-sparking electrical equipment and also to electrical equipment with parts or circuits producing arcs or sparks or having hot surfaces which, if not protected in one of the ways specified in this standard, could be capable of igniting a surrounding explosive gas atmosphere. We currently reference the second edition (2001) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-15, and 111.105-17, while the edition 4.0 (2010) is referenced in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we remove references to the second edition and edition 4.0, and instead incorporate by reference the more recent edition 5.0 (2017) in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). This standard contains numerous technical changes from the previous version, which reflect changes in industry practices and technology.

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IEC 60079-18:2017—Explosive atmospheres—Part 18: Equipment protection by encapsulation “m”, Edition 4.1, Consolidated version, 2017-08.

This part of the IEC 60079 series of standards gives specific requirements for the construction, testing, and marking of electrical equipment, parts of electrical equipment, and Ex components with the type of protection encapsulation “m” intended for use in explosive gas atmospheres or explosive dust atmospheres. We currently reference the first edition (1992) of this standard in §§ 111.105-1, 111.105-3, 111.105-5, 111.105-7, 111.105-15, and 111.105-17, while the edition 3.0 (2009) is referenced in §§ 111.106-3(b) and (d) and 111.108-3(b) and (e). By means of this rule, we remove references to these earlier editions, and adopt instead the more recent edition 4.1 (2017) for §§ 111.105-3(b) and (e), 111.106-3(b) and (d), and 111.108-3(b) and (e). There have been a few minor technical revisions to the standard, including modified and additional requirements for cells and batteries as well as revised testing guidance. The incorporation of the more recent edition ensures consistent, up-to-date standards for electrical installations.

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IEC 60079-25:2010—Explosive atmospheres—Part 25: Intrinsically safe electrical systems, Edition 2.0, 2010-02.

This part of the IEC 60079 series of standards contains specific requirements for construction and assessment of intrinsically safe electrical systems, type of protection “i”, intended for use, as a whole or in part, in locations in which the use of Group I, II, or III apparatus is required. We currently reference the Edition 2.0 (2010) in §§ 111.106-3(b) and 111.108-3(b). By means of this rule, we also reference this standard in § 111.105-3(b) concerning approved equipment. This ensures that standards are consistent on electrical installations.

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IEC 60079-30-1 Part 30-1: Electrical resistance trace heating—General and testing requirements, First edition, 2007-01.

This part of the IEC 60079 series of standards specifies general and testing requirements for electrical resistance trace heaters for application in explosive gas atmospheres. This standard covers trace heaters that may be either factory- or field- (work-site) assembled units, which may be series heating cables, parallel heating cables, or heating pads and heating panels that have been assembled or terminated in accordance with the manufacturer's instructions. By means of this rule, we reference this newly incorporated standard in §§ 111.105-3(b), 111.106-3(b), and 111.108-3(b). Given increased interest in marine operations in the polar regions, this standard provides requirements for surface heating in hazardous locations.

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IEC 60092-101:2018—Electrical installations in ships—Part 101: Definitions and general requirements, Edition 5.0, 2018-10.

This part of the IEC 60092 series of standards contains definitions and requirements that are common to all electrical apparatus and installations in ships. Edition 4.0 (2002) is referenced in §§ 110.15-1 and 111.81-1. By means of this rule, we reference instead the more recent Edition 5.0 (2018) of this standard in those sections. This edition contains many changes, including the following:

○ The applicability of the standard has been changed to 1,000 V AC and 1,500 V DC;

○ The table for design temperature has been simplified;

○ The clause regarding power supply system characteristics has been rewritten; and

○ Information regarding pollution degree has been added in the clause regarding clearance.

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IEC 60092-201:2019—Electrical installations in ships—Part 201: System design—General, Edition 5.0, 2019-09.

This standard contains the main features of system design of electrical installations in ships. We currently reference the fourth edition in §§ 111.70-3 and 111.81-1. By means of this rule, we reference instead the more recent Edition 5.0 (2019) of this standard in those sections. This edition contains many changes including the following:

○ Adding a new subclause regarding studies and calculations;

○ Adding a new subclause regarding documentation;

○ Revising the clause regarding distribution systems;

○ Adding a new clause regarding system earthing;

○ Revising the clause regarding sources of electrical power;

○ Revising the clause regarding distribution system requirements;

○ Deleting the clause regarding cables and transferring it to IEC 60092-401; and

○ Adding a new subclause regarding electric and electrohydraulic steering gear.

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IEC 60092-202:2016—Electrical installations in ships—Part 202: System design—Protection, Edition 5.0, 2016-09.

This part of the IEC 60092 series of standards provides the main features of the electrical protective system design to ensure electrical installations in ships are protected against accidental over-currents, up to and including short-circuit, by appropriate devices.. We currently reference the fourth edition in §§ 111.12-7, 111.50-3, 111.53-1, and 111.54-1. By means of this rule, we reference the more recent edition 5.0 (2016) in those sections, specifically

§§ 111.12-7(b); 111.50-3(c), (e), and (g); 111.53-1(a); and 111.54-1(a). This edition contains substantial technical updates on electrical load studies, short-circuit current calculations, and protection discrimination studies. The incorporation of this edition ensures consistent, up-to-date standards.

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IEC 60092-301:1980—Electrical installations in ships—Part 301: Equipment—Generators and motors, Third Edition with Amendment 1 (1994-05) and Amendment 2, 1995-04.

This part of the IEC 60092 series of standards provides design specifications for generators and motors. This current edition is referenced in §§ 111.12-7, 111.25-5, and 111.70-1. By means of this rule, we make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but the edits do not alter the edition incorporated by reference.

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IEC 60092-302:1997—Electrical installations in ships—Part 302: Low-voltage switchgear and controlgear assemblies, Fourth Edition, 1997-05.

This current edition is referenced in §§ 111.30-1, 111.30-5, and 111.30-19. This part of the IEC 60092 series of standards provides design and testing specifications applicable to low-voltage switchgear and controlgear assemblies. By means of this rule, we make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but the edits do not alter the edition incorporated by reference.

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IEC 60092-303:1980—Electrical installations in ships—Part 303: Equipment—Transformers for power and lighting, Third Edition with amendment 1, 1997-09.

This edition is referenced in § 111.20-15. This part of the IEC 60092 series of standards provides design and testing specifications applicable to all transformers used for power and lighting for use in ships. By means of this rule, we make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but the edits do not alter the edition incorporated by reference.

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IEC 60092-304:1980—Electrical installations in ships—Part 304: Equipment—Semiconductor convertors, Third Edition with Amendment 1, 1995-04.

This edition is referenced in §§ 111.33-3 and 111.33-5. This part of the IEC 60092 series of standards provides design specifications applicable to static converters using semiconductor rectifying elements such as diodes, reverse blocking triode thyristors, etc. for use in ships. By means of this rule, we make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but the edits do not alter the edition incorporated by reference.

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IEC 60092-306:2009—Electrical installations in ships—Part 306: Equipment—Luminaires and lighting accessories, Edition 4.0, 2009-11.

This part of the IEC 60092 series of standards contains the construction and testing requirements for luminaires and lighting accessories for use in ships. The construction and testing requirements apply primarily to luminaires for illumination purposes. This standard also applies to lighting accessories associated with the wiring and current-consuming appliance of an installation. This standard does not apply to portable luminaires, navigation lights, search lights, daylight signaling lamps, signal lights including the relevant control and monitoring equipment and other lights used for navigation in channels, harbors, etc. We currently reference the third edition (1980) of this standard in §§ 111.75-20(a) and (b) and 111.81-1. By means of this rule, we reference instead the most recent edition 4.0 (2009) of this standard in those sections. The IEC made the following changes to the standard since the 1980 edition:

○ The title was amended;

○ The scope was stated more precisely;

○ Mechanical design and material requirements were amended and stated more precisely;

○ Table 2—Standard types of lamp holders was amended;

○ Environmental tests, especially regarding shock and vibration, were added;

○ Requirements and tests concerning special chemical and physical attributes were added; and

○ The standard was editorially revised.

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IEC 60092-350:2014—Electrical installations in ships—Part 350: General construction and test methods of power, control and instrumentation cables for shipboard and offshore applications, Edition 4.0, 2014-08.

This part of the IEC 60092 series of standards provides the general construction requirements and test methods for use in the manufacture of electric power, control, and instrumentation cables with copper conductors intended for fixed electrical systems at voltages up to and including 18/30(36) kV on board ships and offshore (mobile and fixed) units. We currently reference Edition 3.0 (2008) of this standard in § 111.106-5(a). By means of this rule, we reference instead the more recent edition, 4.0 (2014), of this standard in § 111.106-5(a) to ensure the latest industry practices based on changes in technology are addressed. The Coast Guard also amends subpart 111.60 to align with recognized classification society rules and industry practice. In support of this effort, this rule includes IEC 60092-350:2014 in § 111.60-1(a) concerning construction and testing of cable. The 4.0 edition includes the following technical changes as compared to the previous edition:

○ The standard includes a reference to IEC 60092-360 for both the insulating and sheathing compounds;

○ The standard includes partial discharge tests, which were transferred from IEC 60092-354 to align them with IEC 60092-353;

○ The IEC transferred the requirements for oil and drilling-fluid resistance (former Annexes F and G) to IEC 60092-360;

○ The standard contains improved requirements for cold bending and shocks; and

○ The document reflects the changes of material types that were introduced during development of IEC 60092-353 and IEC 60092-360.

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IEC 60092-352:2005—Electrical installations in ships—Part 352: Choice and Installation of electrical cables, Third Edition, 2005-09.

This part of the IEC 60092 series of standards provides the basic requirements for the choice and installation of cables intended for fixed electrical systems on board ships at voltages up to and including 15 kV. We currently reference the second edition (1997) of this standard in §§ 111.60-3, 111.60-5 and 111.81-1. Because of the revisions to subpart 111.60, we instead reference the more recent third edition (2005) of this standard in §§ 111.60-1 and 111.60-5(a) and (b). Additionally, IEC 60092-352:2005 will replace the previous 1997 edition referenced in § 111.81-1. We do not include the 2005 edition in § 111.60-3 because this rule rescinds that section. The 2005 edition has several minor updates including changes to:

○ Sizes of earth continuity conductors and equipment earthing connections;

○ Bending radii for cables rated at 3,6/6,0 (7,2) kV and above;

○ Current carrying capacities in amperes at core temperatures of 70 °C and 90 °C; and

○ Tabulated current carrying capacities—defined installations.

The incorporation of the 2005 edition ensures that we address the latest technologies and industry practices for this standard.

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IEC 60092-353:2016—Electrical installations in ships—Part 353: Power

cables for rated voltages 1 kV and 3 kV, Edition 4.0, 2016-09.

This part of the IEC 60092 series of standards provides manufacturing requirements and characteristics of such cables directly or indirectly bearing on safety and specifies test methods for checking conformity with those requirements. We currently reference the second edition (1995) of this standard in §§ 111.60-1, 111.60-3, and 111.60-5 while the third edition (2011) is referenced in § 111.106-5(a). By means of this rule, we reference instead the more recent edition 4.0 (2016) only in §§ 111.60-1(a), 111.60-5(a) and 111.106-5(a), but not § 111.60-3 because we revise subpart 111.60 regarding cable construction and rescind § 111.60-3. The 2016 edition of this standard includes updates for advancements in insulation and sheathing materials, construction methods, and test methods. Its incorporation ensures consistent, up-to-date standards for electrical cable installations.

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IEC 60092-354:2014—Electrical installations in ships—Part 354: Single- and three-core power cables with extruded solid insulation for rated voltages 6 kV (U

m

=7,2 kV) up to 30 kV (U

m

=36 kV), Edition 3.0, 2014-08.

This part of the IEC 60092 series of standards provides manufacturing requirements and characteristics of such cables directly or indirectly bearing on safety and specifies test methods for checking conformity with those requirements. By means of this rule, we reference this standard in § 111.60-1(a). This aligns Coast Guard requirements with those of recognized classification society rules and industry practice.

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IEC 60092-360:2014—Electrical installations in ships—Part 360: Insulating and sheathing materials for shipboard and offshore units, power, control, instrumentation and telecommunication cables, Edition 1.0, 2014-04.

This part of the IEC 60092 series of standards specifies the requirements for electrical, mechanical, and particular characteristics of insulating and sheathing materials intended for use in shipboard and fixed and mobile offshore unit power, control, instrumentation, and telecommunication cables. By means of this rule, we reference this standard in § 111.60-1(a). This aligns Coast Guard requirements with those of recognized classification society rules and industry practice.

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IEC 60092-376:2017—Electrical installations in ships—Part 376: Cables for control and instrumentation circuits 150/250 V (300 V), Third Edition, 2017-05.

This part of the IEC 60092 series of standards provides manufacturing requirements and characteristics of such cables directly or indirectly bearing on safety and specifies test methods for checking conformity with those requirements. By means of this rule, we reference this standard in § 111.60-1(a). This aligns Coast Guard requirements with those of recognized classification society rules and industry practice.

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IEC 60092-401:1980—Electrical installations in ships—Part 401: Installation and test of completed installation, Third Edition with Amendment 1 (1987-02) and Amendment 2 (1997-04), 1980.

This part of the IEC 60092 series of standards provides general installation and testing requirements for electrical systems and components installed in ships. We currently reference the 1980 edition in §§ 111.05-9 and 111.81-1(d). This rule makes formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but it does not alter the edition incorporated by reference.

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IEC 60092-502:1999—Electrical installations in ships—Part 502: Tankers—Special features, Fifth Edition, 1999-02.

This part of the IEC 60092 series of standards deals with the electrical installations in tankers carrying liquids that are flammable, either inherently, or due to their reaction with other substances, or flammable liquefied gases. The standard details the zonal concept for hazardous area classification. We currently reference the 1992 edition in §§ 111.81-1, 111.105-31, 111.106-3(b), 111.106-5(c), 111.106-15(a), and 111.108-3(b). By means of this rule, we remove reference to this standard in § 111.105-31 and add it into §§ 111.105-1, 111.105-3(b), 111.105-11(c), 111.105-17(b), 111.105-50(c) as an option for classification of hazardous areas as further explained in Section V.D. This rule also makes formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but does not alter the edition incorporated by reference. Additionally, we allow classification of hazardous locations based on this document, as described in more detail in section VI.D of this preamble.

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IEC 60092-503:2007(E)—Electrical installations in ships—Part 503: Special features—AC supply systems with voltages in the range of above 1kV up to and including 15 kV, Second edition, 2007-06.

This part of the IEC 60092 series of standards covers the design and installation requirements for AC supply systems with voltages in the range of above 1 kV. We currently reference the first edition (1975) of this standard in § 111.30-5(a). By means of this rule, we reference instead the more recent second edition (2007) of this standard. The second edition covers a greater range of voltages and has updated technical requirements. The “(E)” stands for the English version of the standard.

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IEC 60331-11:1999+A1:2009—Tests for electric cables under fire conditions—Circuit integrity—Part 11: Apparatus—Fire alone at a flame temperature of at least 750 °C, Edition 1.1, 2009-07 (“IEC 60331-11:2009”).

This part of IEC 60331 specifies the test apparatus to be used for testing cables required to maintain circuit integrity when subject to fire. We currently reference the first edition (1999) of this standard in § 113.30-25. By means of this rule, we reference instead the more recent 1.1 edition (2009) of this standard, which includes minor technical updating, to ensure the latest industry practices based on changes in technology are addressed.

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IEC 60331-21:1999—Tests for electric cables under fire conditions—Circuit integrity—Part 21: Procedures and requirements—Cables of rated voltage up to and including 0.6/1.0 kV, First Edition, 1999-04.

This part of IEC 60331 specifies the test procedure and gives the performance requirement for cables when subject to fire. We currently reference this 1999 edition in § 113.30-25(j). By means of this rule, we make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but this rule does not alter the edition incorporated by reference.

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IEC 60332-1-1:2015 (Consolidated Version)—Tests on electric and optical fibre cables under fire conditions—Part 1-1: Test for vertical flame propagation for a single insulated wire or cable—Apparatus, First Edition with Amendment 1 (2015-07), 2004-07.

This part of IEC 60332 specifies the apparatus for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical cable, under fire conditions. This standard, along with IEC 60332-1-2:2015, supersedes IEC 60332-1:1993, currently referenced in § 111.30-19(b). By means of this rule, we replace the superseded 1993 standard in 111.30-19(b) with IEC 60332-1-1:2015 and IEC 60332-1-2:2015. IEC 60332-1-1:2015 covers the test apparatus, and IEC 60332-1-2:2015 covers the testing procedure. The technical content is similar to the 1993 edition, but has been updated with greater specificity regarding the ignition source, test sample size, and positioning of the test flame.

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IEC 60332-1-2:2015 (Consolidated Version)—Tests on electric and optical fibre cables under fire conditions—Part 1-2: Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1kW pre-mixed flame, First Edition with Amendment 1, 2015-07.

This part of IEC 60332 specifies the procedure for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical cable, under fire conditions. This standard, along with IEC 60332-1-1:2015, supersedes IEC 60332-1:1993, which we currently reference in § 111.30-19(b). By means of this rule, we reference IEC 60332-1-2:2015, regarding the testing procedure, in § 111.30-19(b). The technical content is similar to the 1993 edition, but the updates in the standard provide greater specificity regarding the ignition source, test sample size, and positioning of the test flame.

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IEC 60332-3-21:2018—Tests on electric and optical fibre cables under fire conditions—Part 3-21: Test for vertical flame spread of vertically-mounted bunched wires or cables—Category A F/R, Edition 2.0, 2018-07.

This part of IEC 60332-3 specifies the procedure for testing the resistance to vertical flame propagation for vertically-mounted bunched wires or cables, under defined conditions. Edition 2.0 (2018-7) retains and updates pre-existing categories of tests, adds a new category (category D) for testing at very low non-metallic volumes, and emphasizes that it applies to optical fibre cables as well as metallic conductor cables. By means of this rule, we adopt this standard for incorporation in §§ 111.60-1(b) and 111.107-1(c) as an option testing of flame propagation and consistency with classification society standards as further explained in Section V.D. of this preamble.

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IEC 60332-3-22:2018—Tests on electric cables under fire conditions—Part 3-22: Test for vertical flame spread of vertically-mounted bunched wires or cables—Category A, Edition 2.0, 2018-07.

This part of IEC 60332-3 specifies methods of test for assessment of vertical flame spread of vertically-mounted bunched wires or cables, electrical or optical, under defined conditions. By means of this rule, we remove references to the superseded first edition (2000) of this standard in §§ 111.60-1, 111.60-2, 111.60-6, and 111.107-1. In these sections, we instead reference the more recent edition 2.0 (2018) of this standard. This more recent edition retains and updates the pre-existing categories of tests, adds a new category (category D) for testing at very low non-metallic volumes, and emphasizes that it applies to optical fiber cables as well as metallic conductor cables.

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IEC 60529:2013 (Consolidated Version)—Degrees of protection provided by enclosures (IP Code), Edition 2.2, 2013-08.

This standard describes a system for classifying the degrees of protection provided by the enclosures of electrical equipment as well as the requirements for these degrees of protection and tests to verify the requirements. We currently reference Edition 2.1 (2001) of this standard in §§ 110.15-1, 111.01-9, 113.10-7, 113.20-3, 113.25-11, 113.30-25, 113.37-10, 113.40-10, and 113.50-5. In these sections, we instead reference the more recent edition 2.2 (2013) of this standard. Edition 2.2 (2013) is a minor technical update to the standard.

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IEC 60533:2015—Electrical and electronic installations in ships—Electromagnetic compatibility—Ships with a metallic hull, Edition 3.0, 2015-08.

This standard specifies minimum requirements for emission, immunity, and performance criteria regarding electromagnetic compatibility (EMC) of electrical and electronic equipment for ships with metallic hull. We currently reference the second edition (1999) of this standard in § 113.05-7(a). By means of this rule, we instead reference the more recent edition 3.0 (2015) of this standard. This edition includes the following technical changes with respect to the previous edition:

○ The scope and title have been modified to limit the application of the standard to installations in ships with metallic hulls only;

○ The normative references have been updated;

○ Further explanation for in-situ testing has been given in section 5.1;

○ Cable routing requirements in Annex B have been amended; and

○ A new Annex C EMC test report has been added.

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IEC 60947-2:2019 (Consolidated Version)—Low-voltage switchgear and controlgear—Part 2: Circuit-breakers, Edition 5.1, 2019-07.

This standard provides circuit-breaker construction and testing requirements. We currently reference the third edition (2003) of this standard in § 111.54-1(b). By means of this rule, we instead reference the more recent edition 5.1 (2019) of this standard. The 2019 edition of this standard contains numerous technical updates addressing technical advancements, including circuit-breaker testing, instantaneous trip circuit-breakers, and electromagnetic compatibility.

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IEC 61363-1:1998—Electrical installations of ships and mobile and fixed offshore units—Part 1: Procedures for calculating short-circuit currents in three-phase a.c., first edition, 1998-02.

This standard outlines procedures for calculating short-circuit currents that may occur on a marine or offshore a.c. electrical installation. By means of this rule, we will make formatting changes to the standard's title for consistency with the titles of all other referenced IEC standards, but this rule does not alter the edition currently incorporated by reference. We currently reference this 1998 edition in § 111.52-5. This rule will move the standard to the new § 111.51-4(b) because we are combining the requirements of subparts 111.51 and 111.52 into a single subpart 111.51 (Calculation of Short-Circuit Currents and Coordination of Overcurrent Protective Devices).

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IEC 61439-6: 2012—Low-voltage switchgear and controlgear assemblies—Part 6: Busbar trunking systems (busways), Edition 1.0, 2012-05.

This standard states busbar service conditions, construction requirements, technical characteristics, and verification requirements for low voltage busbar trunking systems. By means of this rule, we add it to the revised § 111.59-1 concerning general requirements for busways as an additional option.

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IEC 61660-1:1997—Short-circuit currents in d.c. auxiliary installations in power plants and substations—Part 1: Calculation of short-circuit currents, First Edition, 1997-06,

with IEC 61660-1:1997/COR1:1999, Corrigendum 1 (March 1999), First Edition; and IEC 61660-1:1997/COR2:2000, Corrigendum 2 (March 2000), First Edition. This standard, including the corrigendums, describes a method for calculating short-circuit currents in DC auxiliary systems in power plants and substations. By means of this rule, we include it in the revised § 111.51-4(b) as an alternative for short-circuit analysis.

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IEC 61892-7:2019—Mobile and fixed offshore units—Electrical installations—Part 7: Hazardous areas, Edition 4.0, 2019-04.

This standard contains provisions for hazardous areas classification and choice of electrical installation in hazardous areas in mobile and fixed offshore units, including pipelines, pumping or “pigging” stations, compressor stations, and exposed location single buoy moorings, used in the offshore petroleum industry for drilling, processing, and for storage purposes. We currently reference Edition 2.0 (2007) of this standard in § 111.108-3(b). By means of this rule, we update

the reference in § 111.108-3(b) to the more recent edition 4.0 (2019) and insert new references to this standard in §§ 111.105-1, 111.105-3(b), and 111.105-17(b). The standard has been completely rewritten. The Explosion Protection Level concept has been introduced as an alternative risk-based classification method and the requirements for installations in hazardous conditions reference IEC 60079-14 and other relevant standards, as appropriate. The incorporation of this standard into subpart 111.105 provides an alternate standard for classifications for hazardous locations.

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IEC 62271-100:2017 (Consolidated Version)—High-voltage switchgear and controlgear—Part 100: Alternating-current circuit-breakers, Edition 2.2, 2017-06.

This standard provides construction and testing requirements for circuit-breakers having voltages above 1000 V. We currently reference Edition 1.1 (2003) of this standard in § 111.54-1(c). By means of this rule, we reference the more recent edition 2.2 (2017) of this standard. There have been numerous technical updates to address technical advancements in switchgear. To ensure we address the latest technologies and industry practices, we incorporate the more recent edition of this standard.

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IEC/TR 60092-370:2009—Technical Report—Electrical installations in ships—Part 370: Guidance on the selection of cables for telecommunication and data transfer including radio-frequency cables, Edition 1.0, 2009-07.

This technical report gives guidance and basic recommendations for the selection and installation of shipboard and offshore unit cables intended for electrical systems used in both essential and non-essential analogue or digital signal communication, transmission, and control networks, including types suitable for high-frequency signals (

i.e.,

signals with a frequency of more than 10

5

Hertz). By means of this rule, we reference this new standard in § 111.60-1. This aligns our requirements with those of recognized classification society rules and industry practice.

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IEC/IEEE 80005-1:2019—Utility connections in port—Part 1: High voltage shore connection (HVSC) systems—General requirements, Edition 2.0, 2019-03.

This standard describes the design, installation, and testing of HVSC systems, on board the ship and on shore, to supply the ship with electrical power from shore. Ships may be required by state or local laws to connect to high voltage shore power (over 1000 V) rather than running their onboard generators. Some ships may voluntarily connect to an HVSC. In § 111.83-7, we provide this standard as a recommended compliance standard for all applicable vessels that connect to an HVSC.

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SOLAS Consolidated Edition 2014, Consolidated Text of the International Convention for the Safety of Life at Sea, 1974, and its Protocol of 1988: article, annexes and certificates. (Incorporating all amendments in effect from 1 July 2014), Sixth edition, 2014.

SOLAS provides requirements for vessel construction, arrangement, and management on international voyages. We reference SOLAS 2001 requirements in §§ 111.99-5, 112.15-1, and 113.25-6 and, by means of this rule, incorporate instead the 2014 edition of SOLAS. While the applicable sections of SOLAS referenced in these requirements were not changed in the 2014 edition, we are incorporating these SOLAS amendments for completeness because industry is likely to use the more recent edition.

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IMO Resolution A.1023(26)—Code for the Construction and Equipment of Mobile Offshore Drilling Units, 2009.

We make a non-substantive formatting change to the listing of this resolution in § 110-10-1(b). Chapter 6 of this resolution is referenced in § 111.108-3(b). The resolution provides requirements for machinery and electrical installations in hazardous areas of mobile offshore drilling units.

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ISA RP 12.6—Wiring Practices for Hazardous (Classified) Locations Instrumentation Part I: Intrinsic Safety, 1995.

By means of this rule, we delete this standard from reference in § 111.105-11. It has been withdrawn by ISA and has been superseded by ANSI/ISA RP 12.06.01 (2003), which we incorporate by reference in § 111.105-11.

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ISO 25861:2007(E)—Ships and marine technology—Navigation—Daylight signalling lamps, first edition, Dec, 1, 2007.

By means of this rule, we reference this standard in § 111.75-18 regarding daylight signaling lamps. This standard provides performance requirements for daylight signaling lamps pursuant to chapter V of SOLAS, 1974, as amended, and chapter 8 of the International Code for Safety for High-Speed Craft. The performance standards for daylight signaling lamps currently in § 111.75-18 are based on the international requirements in place in 1996, but the requirements contained in ISO 25861:2007 superseded those requirements. The “(E)” stands for the English version of the standard.

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Lloyd's Register Type Approval System-Test Specification Number 1, March 2019.

Lloyd's Register is a vessel classification society that develops and publishes a comprehensive set of rules for the construction and maintenance of ships and offshore facilities. The rules are, in general, developed by IACS and by Lloyd's Register staff, and passed upon by committees made up of naval architects, marine engineers, shipbuilders, engine builders, steel makers and other technical, operating, and scientific personnel associated with the worldwide maritime industry. Because of classification society rules' comprehensive nature and long history of ensuring vessel safety and seaworthiness, they are a valuable supplement to the numerous voluntary consensus standards incorporated by reference. This specification details performance and environmental testing required for products used in marine applications. We currently reference the 2002 edition of this standard in § 113.05-7(a). By means of this rule, we reference the more recent 2019 edition. It has been updated several times to keep pace with changes in environmental testing.

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NEMA ICS 2-2000 (R2005)—Industrial Control and Systems Controllers, Contactors, and Overload Relays, Rated 600 Volts, 2000.

This standard provides practical information concerning ratings, construction, test, performance, and manufacture of industrial control equipment. This edition is referenced in § 111.70-3. NEMA reaffirmed the edition without change in 2005. By means of this rule, we include the reaffirmed version of this standard, which results in no substantive changes.

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NEMA ICS 2.3-1995—Instructions for the Handling, Installation, Operation, and Maintenance of Motor Control Centers Rated not More Than 600 Volts, 1995 (R2008).

This standard provides practical information containing instructions for the handling, installation, operation, and maintenance of motor control centers rated 600 volts or less. This edition is referenced in § 111.70-3. NEMA reaffirmed the edition without change in 2008. By means of this rule, we include the reaffirmed version of this standard, which results in no substantive changes.

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NEMA ICS 2.4-2003 (R2102)—NEMA and IEC Devices for Motor Service—a Guide for Understanding the Differences, 2003.

This edition is referenced in § 111.70-3. This standard provides practical information concerning the differences between NEMA and IEC in ratings, construction, test, performance, and manufacture of industrial control equipment. NEMA reaffirmed the edition without change in 2012. By means of this rule, we include

the reaffirmed version of the standard, which results in no substantive changes.

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NEMA 250-2018—Enclosures for Electrical Equipment (1000 Volts Maximum), 2018.

This standard covers classification of enclosures for electrical equipment as well as the requirements for these enclosures and tests to demonstrate conformance with the requirements. We currently reference the 1997 edition of this standard in §§ 110.15-1(b), 111.01-9, 113.10-7, 113.20-3, 113.25-11(a), 113.30-25(e), 113.37-10(b), 113.40-10(b), and 113.50-5(g). By means of this rule, we reference the more recent 2014 edition in these sections. The 2014 edition added several new enclosure types as well as several minor construction details.

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NEMA Standards Publication No. WC-3-1992—Rubber Insulated Wire and Cable for the Transmission and Distribution

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