Fisheries of the Exclusive Economic Zone Off Alaska; At-Sea Scale Certification Program

DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration

50 CFR Part 679

[Docket No. 960206024-7123-02; I.D. 043097A]

RIN 0648-AG32

Fisheries of the Exclusive Economic Zone Off Alaska; At-Sea Scale

Certification Program

AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and

Atmospheric Administration (NOAA), Commerce.

ACTION: Proposed rule; request for comments.

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SUMMARY: NMFS proposes amendments to the regulations implementing the

Fishery Management Plan for Groundfish of the Gulf of Alaska and the

Fishery Management Plan for the Groundfish Fishery of the Bering Sea

and Aleutian Islands Area (FMPs). This proposed regulatory amendment

would implement the requirements for certification and at-sea testing

of scales used to weigh groundfish catch at sea. This action is

intended to promote the objectives of the FMPs.

DATES: Comments must be received by July 16, 1997.

ADDRESSES: Comments on the proposed rule should be sent to Ronald J.

Berg, Chief, Fisheries Management Division, Alaska Region, NMFS, P.O.

Box 21668, Juneau, AK 99802, Attn: Lori J. Gravel, or delivered to the

Federal Building, 709 West 9th Street, Juneau, AK.

Send comments regarding burden estimates or any other aspect of the

data requirements, including suggestions for reducing the burdens, to

NMFS and to the Office of Information and Regulatory Affairs, Office of

Management and Budget (OMB), Washington, D.C. 20503, Attn: NOAA Desk

Officer.

FOR FURTHER INFORMATION CONTACT: Sally Bibb, 907-586-7228.

SUPPLEMENTARY INFORMATION:

Background

Fishing for groundfish by U.S. vessels in the exclusive economic

zone of the Gulf of Alaska (GOA) and the Bering Sea and Aleutian

Islands Management Area (BSAI) is managed by NMFS according to the

FMPs. The FMPs were prepared by the North Pacific Fishery Management

Council (Council) under authority of the Magnuson-Stevens Fishery

Conservation and Management Act (Magnuson-Stevens Act). Fishing by U.S.

vessels is governed by regulations implementing the FMPs at subpart H

of 50 CFR part 600 and 50 CFR part 679.

In 1990 the Council requested that NMFS analyze a requirement to

weigh catch processed at sea. NMFS implemented regulations on May 16,

1994 (59 FR 25346), requiring processor vessels in the pollock

Community Development Quota (CDQ) fisheries to either provide certified

bins for volumetric estimates of catch or scales to weigh catch. In

September 1994, the Council recommended that NMFS require processor

vessels participating in the BSAI pollock fisheries to weigh their

catch before discard or processing. In response to this request, NMFS

published an Advance Notice of Proposed Rulemaking (ANPR), which

requested public comment on a three-part scale evaluation and approval

process on February 20, 1996 (61 FR 6337). Public comment was invited

through March 21, 1996. Comments relevant to this proposed rulemaking

are summarized and responded to below in the ``Response to Comments''

section.

The proposed at-sea scale certification program described in this

rulemaking is designed in response to comments on the ANPR, NMFS

research evaluating the use of scales on processor vessels, further

experience using scales on two processor vessels in the CDQ fisheries,

and the recommendations of a technical advisor hired by NMFS.

NMFS specifically seeks public comment on the proposed process for

determining whether a particular scale is capable of weighing

accurately at sea, the performance and technical requirements in the

At-Sea Scales Handbook, and the proposed procedures for testing scales

at sea.

Specifying Which Processors Must Weigh

This proposed rulemaking does not require specific processors or

vessels to use certified scales to weigh catch at sea. NMFS currently

is considering proposing requirements for at-sea weighing in the

proposed multispecies CDQ fisheries and in the BSAI pollock fisheries

as recommended by the Council. However, a program for inspecting and

certifying scales for use in weighing at sea must be established before

NMFS proceeds with proposed requirements for specific processors or

vessels to weigh catch at sea.

Response to Comments

Six letters were received in response to the request for public

comment on the ANPR. Many of the comments in these letters related to

whether NMFS should require processor vessels in the BSAI pollock

fisheries to weigh catch at

[[Page 32565]]

sea. Eight comments related to specific questions in the ANPR about the

technical or operational aspects of a certified scale program, which is

the subject of this proposed rulemaking. These comments are addressed

below.

Comment 1. Any method of evaluating a scale must first establish

specifications in detail.

Response. NMFS concurs. NMFS hired a technical advisor with

expertise in developing specifications for many different types of

scales to revise the specifications originally proposed in the ANPR.

NMFS believes that the level of detail and the applicability of

performance and technical requirements for scales used to weigh catch

at sea have been improved in the proposed rule and the At-Sea Scales

Handbook. NMFS continues to seek public comment in this regard.

Comment 2. Personnel with the National Type Evaluation Program

(NTEP) do not have the expertise to evaluate at-sea scales.

Response. NMFS concurs that NTEP personnel have not evaluated a

scale designed to compensate for vessel motion, although appropriate

expertise and test procedures could be developed at accredited

laboratories in the future. Unlike the ANPR, the proposed rule would

allow laboratory tests to be conducted at any accredited laboratory.

Comment 3. It is not feasible to use groundfish as a test material

for the initial inspection of motion-compensated belt scales on vessels

because it would require travel to Alaska well in advance of the

fishing seasons to harvest a small amount of fish for the tests.

Response. NMFS concurs. The proposed rule would allow initial and

periodic scale inspections to be conducted at any time during the year

in either Seattle or Dutch Harbor. Because fish would not be available

at the time of initial inspection, the proposed rule would allow the

use of alternative material. However, fish could still be used in daily

materials tests conducted during the fishing seasons.

Comment 4. The fishing industry is unwilling to fund the inspection

and certification program for scales used to weigh catch in the open

access fisheries.

Response. The proposed rule does not include a provision that would

require the fishing industry to pay for scale inspections and

certifications, although provisions to recover the costs of the scale

inspections could be added by NMFS in the future if the collection of

fees for this service were authorized by the Magnuson-Stevens Act. NMFS

would not pay for laboratory tests conducted under type approval

requirements. These tests would be the responsibility of the scale

manufacturer.

Comment 5. Knowledgeable inspectors must be available to conduct

scale tests.

Response. NMFS concurs and intends to designate an agency such as

the State of Alaska, Division of Measurement Standards, to provide

trained personnel to inspect and certify at-sea scales. Weights and

measures inspectors would require little additional training to inspect

hopper scales, platform scales, and hanging scales as they regularly

certify these types of scales for use on land. The inspectors are less

familiar with belt scales. However, the specific requirements listed in

the At-Sea Scales Handbook combined with written procedures for

conducting the inspections would assist the inspectors. In addition,

training on inspecting and certifying belt scales would be provided.

Comment 6. Results of initial experience with motion-compensating

scales are not good.

Response. NMFS has had experience with scales used to weigh catch

on three processor vessels. In one case, the processor vessel installed

the scale voluntarily and used it to monitor product recovery rates.

This processor has reported no problems with the scale in over 5 years

of use. The other two processor vessels installed scales during the

1995 pollock nonroe season in order to comply with regulations

governing the pollock CDQ program. One of these scales was improperly

installed. An initial inspection of the scale as described in this

proposed rule would have identified the installation problem before the

vessel went fishing. The other scale was modified during the fishing

season in a manner that prevented it from weighing accurately.

Education of the vessel crew as to how the scale operates appears to

have resolved this problem.

Since the ANPR was published, NMFS has contracted with a processor

vessel to use a motion-compensated belt scale to evaluate the accuracy

of various methods for making volumetric estimates of catch weight in

the pollock fisheries. The belt scale was tested nearly every day for

approximately 14 weeks and weighed the test material within 3 percent

of its known weight each time it was tested.

Comment 7. Daily tests of the scale would be costly to industry in

terms of the lost production time.

Response. Based on experience testing the scale, NMFS estimates

that the time required for daily scale tests would be 15 minutes or

less. NMFS believes testing the scales each day is necessary to

determine whether they are continuing to weigh accurately at sea.

Comment 8. Only one scale company manufactures a scale reliable

enough to accurately weigh catch at sea. This will result in high costs

for the scale and scale repair and a shortage of qualified technicians.

Response. NMFS agrees that, thus far, only one company has

demonstrated that its scale can weigh large quantities of fish at sea

and pass daily accuracy tests. However, several scale companies are

developing at-sea scales of various types including belt scales and

automatic hopper scales. Implementation of specific performance and

technical requirements is expected to provide the information necessary

for other scale companies to develop competing products.

At-Sea Scale Certification Program

Scales used in commerce in the United States are regulated by state

and local government agencies, based on national standards established

by the National Conference on Weights and Measures (NCWM) and published

by the U.S. Department of Commerce, National Institute for Standards

and Technology (NIST) in Handbook 44. Handbook 44 includes design, use,

and performance standards for many different weighing and measuring

devices, including several different types of scales. Scales used by

processors buying fish in Alaska are required to be certified by the

State of Alaska, Division of Measurement Standards, based on Alaska

regulations and Handbook 44.

Although Handbook 44 contains standards for scales of the general

description of those that will be used to weigh catch at sea (i.e.,

belt, hopper, platform, and hanging scales), it does not provide

adequate standards for at-sea scales for several reasons. First, it

contains no requirement for motion compensation technology, which NMFS

believes is necessary to weigh accurately at sea. Second, it contains

no standards appropriate to evaluate the type of belt scale that has

been designed for use on processor vessels. NMFS believes this type of

scale should be an option for vessel owners. Finally, accuracy

standards or tolerances for scales used in commerce are higher than

NMFS believes can be achieved at sea.

The lack of appropriate standards for at-sea scales led NMFS to

develop the proposed standards for at-sea scale certification in the

At-Sea Scales Handbook. This handbook was prepared by NMFS with the

assistance of a technical advisor who was formerly employed with NIST.

The proposed standards are modeled after

[[Page 32566]]

requirements in Handbook 44 and other international scale standards but

have been modified to reflect the unique environment in which at-sea

weighing will occur.

The proposed rule would add a new Sec. 679.28 to 50 CFR part 679,

titled ``Equipment and Operational Requirements for Catch Weight

Measurement'' and would codify the At-Sea Scales Handbook as Appendix A

to part 679. Section 679.28 would contain vessel owner and operator

responsibilities for scale certification, at-sea testing, and

recordkeeping and reporting and would define a scale certified to weigh

at sea as one that meets the performance and technical requirements in

Appendix A to part 679, the At-Sea Scales Handbook.

Compliance with the performance and technical requirements in the

At-Sea Scales Handbook would be evaluated through both laboratory tests

and scale inspections. First, the model of scale would be tested in a

laboratory to verify that it meets technical requirements and weighs

accurately under some of the environmental factors expected on

commercial fishing and processing vessels. This process is know as

``type evaluation''.

Second, each installed scale would be certified by an inspector

authorized by the Administrator, Alaska Region, NMFS (Regional

Administrator) in initial and periodic inspections. A certified scale

would be required to be recertified each year. In addition, the scale

would have to be recertified if it is modified or removed from the

vessel and reinstalled. Further, to being certified, the scale would be

required to weigh accurately at sea as determined by tests performed

each day by the vessel crew and witnessed by the NMFS-certified

observer.

Compliance with Sec. 679.28 would require successful completion of

all three elements described above. The scale would be required to

successfully meet both the type evaluation and inspection requirements

to be certified. Once certified, the scale would be required to

continue to weigh accurately at sea. A certified scale that did not

pass daily scale performance tests would not comply with the

regulations and an uncertified scale could not be used even if it

passed daily scale tests.

NMFS believes that the three-part scale testing and inspection

process is necessary to prevent the installation and use of equipment

that is not suited for the environment in which it will be used and to

minimize the number of scales that develop problems during a fishery.

The type-evaluation process would evaluate how a scale performs under

laboratory simulation of the at-sea environment--tests that cannot be

performed by a scale inspector on the vessel. Type evaluation also

would provide the vessel owners added assurance that the model of scale

they are purchasing has been designed to perform on a vessel and that

it meets some of the minimum technical and performance requirements for

at-sea scales. The initial and periodic inspections would verify that

each scale installed on a particular vessel complies with all technical

requirements and weighs test material or test weights accurately. The

inspection also would identify improper installations or malfunctioning

scales and verify that the vessel owner has provided the test material

required for the at-sea scale tests. The at-sea scales tests would be

the only tests that would determine whether the scale weighs accurately

at sea. NMFS is not proposing to require laboratory simulation of

vessel motion due to the complexity and cost of this type of testing.

The scale inspections would occur at the dock, under conditions of

minimal vessel motion.

The At-Sea Scales Handbook contains requirements for four different

types of scales that may be used to weigh fish on a vessel. They are

(1) belt scales, (2) automatic hopper scales, (3) platform scales, and

(4) hanging scales. The handbook has a separate section for belt scales

and automatic hopper scales. The requirements for platform and hanging

scales are combined in a third section. Type evaluation requirements

for all scales are included in an annex to Appendix A.

Only these four types of scales could be certified under the

proposed program. No other type of weighing or measuring device could

be certified under this program until certification standards are

developed and added to Sec. 679.28 and Appendix A.

Performance standards and technical requirements for four different

types of scales are necessary because of the many possible applications

for at-sea scales. Belt scales are most appropriate for high volume,

continuous flow operations such as trawl catcher/processors or

motherships. However, these scales may not weigh as accurately in low

volume or discontinuous flow operations such as on longline or pot

catcher/processors. Automatic hopper scales could be used for both

types of operations because they accumulate fish in a hopper until a

certain target weight is reached, then fish are released back onto the

factory line. Platform and hanging scales are included because they

could be used to weigh fish in small quantities.

Type Evaluation

Type evaluation is a one-time test of a model or type of scale to

determine whether the scale meets technical requirements and functions

within specified parameters under the environmental conditions expected

on a vessel. In order to obtain type approval, a scale company would

submit one scale of a particular model or type for laboratory tests. If

that scale met the performance and technical requirements, the

laboratory certification would cover all scales of this particular

model. The proposed regulations would not require laboratory testing of

each individual scale.

One of the most important technical requirements that would be

verified by the laboratory would be whether the scale was designed to

compensate adequately for the effect of motion on the weight indicated

by the scale. NMFS proposes to require that scales be equipped with

automatic means to compensate for the motion of a vessel at-sea in the

form of a reference load cell and a reference mass weight or other

equally effective means. The reference mass weight would be weighed by

the reference load cell and a motion-compensation adjustment factor

would be calculated and applied to the fish weight. For example, assume

that the reference mass weight actually weighed 10 kg, but the motion

of the vessel was such that the reference load cell sensed that it

weighed only 9.9 kg. In this case, the scale would adjust the weight of

the fish it was weighing by the same ratio as the indicated error in

the reference weight (see sections 2.3.2.6, 3.3.4.3, and 4.3.2.3 in the

At-Sea Scales Handbook). Scale manufacturers who wish to use a

different but at least as effective means of motion-compensation as

described above would be required to provide NMFS with laboratory or

field test results demonstrating that the scale is capable of weighing

accurately at sea.

One scale manufacturer has submitted laboratory test results to

NMFS for a motion-compensated belt-conveyor scale. The tests were

performed at a Danish laboratory and would comply with many of the

requirements proposed in this rulemaking. Other types of motion-

compensated scales would have to be submitted to a laboratory for

evaluation, which could take up to 3 months to complete. Certification

of successful completion of laboratory tests would be required before

the an inspector could test and certify a scale installed on a vessel.

Requirements for the laboratory tests are contained in two

different areas of the handbook. Requirements specific to

[[Page 32567]]

a particular type of scale are found in sections 2, 3, and 4. Test

procedures common to all scales are found in the annex to the handbook.

For example, section 2 contains specific requirements for belt scales.

Section 2.2 contains performance standards for belt scales. Section

2.2.1 contains the maximum permissible errors (mpe) for tests of the

belt scale and section 2.2.1.1 contains the mpes for the laboratory

tests of the belt scale. Similarly, section 3.2.1.1 contains the mpes

for the laboratory tests of automatic hopper scales and section 4.2.1.1

contains the mpes for laboratory tests for platform and hanging scales.

The laboratory tests, described in the annex, are divided into

disturbance tests and influence quantity tests. Disturbances refer to

events that may occur while the scale is being used, but that are not

within the rated operating conditions of the scale, such as short time

power reduction, power bursts, electrostatic discharge, and

electromagnetic susceptibility. Influence quantities refer to factors

that may affect the accuracy of the scale weight and are within the

rated operating conditions of the scale, such as temperature, humidity,

and power voltage fluctuations.

Each scale submitted for type evaluation would be tested for

disturbances and influence quantities based on the performance

requirements of applicable sections of the handbook and on the test

procedures in the annex. The scales also would be evaluated for

compliance with the technical requirements in each section, such as

scale markings, printed output, display units and capacity, permanence

of marking, event loggers to record scale adjustments, and means to

retain information in memory in the event of a power loss.

Complete, signed type-evaluation certification documents would be

required to be received by the Regional Administrator before any scale

of the particular model could undergo an initial inspection by the

authorized inspector. The Regional Administrator would maintain a list

of scales that had successfully completed type-evaluation requirements

and make this list available to the public upon request. The type-

evaluation certification documents would include an application form,

checklists to verify compliance with all performance and technical

requirements, and test report forms to record the results of specific

tests. NMFS would provide the blank forms to scale manufacturers,

laboratories, and vessel owners upon request.

Laboratories certifying compliance with type-evaluation

requirements would have to be accredited by the U.S. Government or by

the government of the country in which the laboratory is located. For

example, in the United States, a laboratory may be accredited by

programs recognized by the NIST such as the National Voluntary

Laboratory Accreditation Program. Information about laboratory

accreditation must be provided on the type evaluation certification

documents and would be evaluated by the Regional Administrator through

consultation with NIST or the national weights and measures agency of

the country in which the laboratory is located.

The performance and technical requirements for laboratory tests for

belt scales specified in the At-Sea Scales Handbook are based, in part,

on the International Organization of Legal Metrology's (OIML)

international recommendations for continuous totalizing automatic

weighing instruments (R-50). Manufacturers of belt scales may request

that the Regional Administrator accept laboratory tests performed to

demonstrate compliance with OIML R-50 standards in lieu of laboratory

tests in the At-Sea Scales Handbook. These manufacturers would have to

submit written and signed copies of the laboratory test results. Any

requirements in the At-Sea Scales Handbook that are not in the OIML R-

50 standards would be required to be verified by an independent

laboratory. NMFS would have these requests reviewed by a technical

advisor to verify that the proposed laboratory test results met the

requirements of the At-Sea Scales Handbook.

NMFS seeks public comment on whether existing laboratory

certification processes in the United States or elsewhere could

similarly be used in lieu of the proposed type evaluation certification

requirements for automatic hopper scales, platform scales, or hanging

scales. Comments must specifically address the source of the

alternative laboratory test specifications and the type of

certification documents that could be accepted by NMFS.

Initial and Periodic Inspections

The initial inspection of each scale installed on a vessel would be

performed by an authorized weights and measures inspector designated by

the Regional Administrator based on the performance and technical

requirements in the At-Sea Scales Handbook. The inspector would

complete certification forms including a checklist and test report

forms. The vessel owner would be required to maintain a copy of the

scale certification documents on the vessel at all times when a

certified at-sea scale was required to be used and to submit a copy to

NMFS. NMFS would maintain a list of vessels with current scale

certifications.

The initial inspection would occur while the vessel is in drydock

or tied up in either Seattle or Dutch Harbor. The vessel owner would be

responsible to schedule inspections with the authorized weights and

measures inspectors designated by the Regional Administrator. The

vessel owner would be required to give the scale inspectors at least 10

working day's notice prior to the inspection to allow for scheduling

and travel from anchorage to Seattle or Dutch Harbor. At the time of

the inspection, the vessel owner would be required to assist the

inspector in moving test equipment to and from the inspector's vehicle

and the location on the vessel where the scale is installed.

Each scale would be inspected to determine compliance with

technical requirements such as level installation; proper marking of

information such as name, model designation, and serial number; the

required indicators and printer; and the proper sealing of adjustable

components. A ``zero test'' would be performed on all scales to

determine whether the scale accumulated weight while empty.

Each scale would be tested for accuracy based on the procedures

appropriate for the particular type of scale. Belt scales would be

tested with a ``materials test'' in which an amount of material would

be first weighed on a certified scale to determine its known weight and

then weighed on the belt scale. The difference between the known weight

and the weight indicated by the belt scale would be the error of the

belt scale. Belt scales would be required to weigh material to within 1

percent of its known weight in the initial and periodic inspections in

stationary installations.

Automatic hopper scales, platform scales, and hanging scales would

be tested by placing standard test weights in or on the scale in

different amounts and locations. These scales would be required to

weigh the standard test weights to within 1 percent of their known

weight. All test material and weights needed for scales tests during

the inspection would be provided by the scale inspector.

Each scale would be tested to determine compliance with

requirements for printed output. Printed output of the catch weight

including vessel name and Federal fisheries or processor permit number,

haul or set number, date and time weighing catch

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from haul or set started and ended, and the weight of fish in each haul

or set would be required for all scales. In addition, a printed record

of any tests, adjustments, calibrations, or other procedures performed

on the scale including month, day, year, and time of procedure, name or

description of procedure, and result of procedure would be required.

The inspector also would verify that the test material required to be

provided by the vessel owner for the at-sea scale tests was on board

the vessel and in compliance with requirements discussed below.

Each scale would be required to be certified every year, within 12

months of the date of the most recent certification. An inspection also

would be required if the scale is moved to a different location on the

vessel, undergoes major modifications, or is reinstalled after being

removed from the vessel.

At-Sea Scale Tests

At-sea scale tests would be required to determine whether the scale

weighed accurately in motion. Tests would be performed each day by the

vessel crew and witnessed by the observer. Each scale would be required

to weigh the test material within 3 percent of its known weight. If the

scale did not meet this performance standard, it would be required to

be recalibrated or repaired and retested. Any material or test weights

required for the at-sea tests would be provided and maintained by the

vessel owner. Test material other than fish or any standard test

weights that will be used to test the scale at sea must be inspected

and approved by the authorized weights and measures inspector at the

time of initial or periodic inspections.

The vessel operator may conduct the scale test at any time that

does not interfere with the observer's sampling or related duties,

however, the observer must be notified of a test at least 15 minutes

before it is conducted and the observer must be present for the test.

The observer would not be required to determine the time of the test or

to perform any of the physical labor associated with the test.

Classification

The Assistant General Counsel for Legislation and Regulation of the

Department of Commerce certified to the Chief Counsel for Advocacy of

the Small Business Administration that this proposed rule, if adopted,

would not have a significant economic impact on a substantial number of

small entities, as follows:

The proposed rule would establish a testing and certification

program for scales to weigh catch at sea in the groundfish fisheries

off Alaska. It does not include any requirements for specific

vessels or processors to install or use at-sea scales.

Because there are no requirements imposed on vessel operators or

processors, it does not affect the way they do business. There are

no compliance costs, and there will be no impact on revenues. It

merely establishes a procedure to be used in the future, if such

requirements are imposed on vessels and/or processors. Therefore, no

Initial Regulatory Flexibility Analysis was prepared.

This proposed rule has been determined to be not significant for

purposes of E.O. 12866.

This proposed rule contains a new collection-of-information

requirement subject to review and approval by OMB under the Paperwork

Reduction Act (PRA). This collection-of-information requirement has

been submitted to OMB for approval. The new information requirements

include the following: (1) Scale manufacturers must submit completed

At-Sea Scales Type Evaluation Certification documents to the Regional

Administrator prior to being placed on the list of eligible at-sea

scales; (2) vessel owners must submit a copy of the scale certification

document issued by a scale inspector approved by the Regional

Administrator to NMFS prior to participating in a fishery in which a

certified at-sea scale is required; (3) vessel operators must maintain

a record of the results of daily at-sea scale tests; and (4) vessel

operators must maintain printed output from the scale. The public

reporting burden for this collection of information is estimated to

average 176 hours per response for the type evaluation certification

documents, 15 minutes per response to submit the scale certification to

NMFS, 45 minutes per response for the at-sea scale tests, and 3 minutes

per response for the printed output from the scale. These estimates

include the time for reviewing instructions, searching existing data

sources, gathering and maintaining the data needed, and completing and

reviewing the collection of information. Send comments regarding these

burden estimates or any other aspect of the data requirements including

suggestions for reducing the burden, to NMFS (see ADDRESSES) and to the

Office of Information and Regulatory Affairs, OMB, Washington, DC 20503

(Attention: NOAA Desk Officer).

Public comment is sought regarding: Whether this proposed

collection of information is necessary for the proper performance of

the functions of the agency, including whether the information has

practical utility; the accuracy of the burden estimate; ways to enhance

the quality, utility, and clarity of the information to be collected;

and ways to minimize the burden of the collection of information,

including through the use of automated collection techniques or other

forms of information technology.

Notwithstanding any other provision of the law, no person is

required to respond to, nor shall any person be subject to a penalty

for failure to comply with, a collection-of-information subject to the

requirements of the PRA, unless that collection-of-information displays

a currently valid OMB control number.

The Regional Administrator determined that fishing activities

conducted under this rule will not affect endangered and threatened

species listed or critical habitat designated pursuant to the

Endangered Species Act in any manner not considered in prior

consultations on the groundfish fisheries of the GOA or BSAI.

List of Subjects in 50 CFR Part 679

Fisheries, Reporting and recordkeeping requirements.

Dated: June 10, 1997.

David L. Evans,

Deputy Assistant Administrator for Fisheries, National Marine Fisheries

Service.

For the reasons set out in the preamble, 50 CFR part 679 is

proposed to be amended as follows:

PART 679--FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA

1. The authority citation for part 679 continues to read as

follows:

Authority: 16 U.S.C. 773 et seq., 1801 et seq., and 3631 et seq.

Sec. 679.27 [Reserved]

2. In subpart B, Sec. 679.27 is reserved.

3. In subpart B, Sec. 679.28 is added to read as follows:

Sec. 679.28 Equipment and operational requirements for catch weight

measurement.

(a) Applicability. This section contains the requirements for

motion-compensated, NMFS-certified scales to weigh catch at sea. This

section applies only to vessels required to use at-sea scales elsewhere

in the regulations.

(b) At-sea scales certification program--(1) List of eligible at-

sea scales. The model of scale must be on the Regional Administrator's

list of eligible at-sea scales before an inspector will test or certify

a scale installed on a vessel under paragraph (b)(2) of this section. A

scale will be included on the list of eligible at-sea scales when the

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Regional Administrator receives the information specified in paragraph

(b)(1) (i) or (ii) of this section from a testing laboratory accredited

by the government of the country in which the tests are conducted. Each

model of scale on the list of eligible at-sea scales will be assigned a

NMFS type evaluation certification number by the Regional

Administrator.

(i) Type evaluation certification documents. The following

information must be submitted on forms provided by the Regional

Administrator.

(A) Type Evaluation Certificate--(1) Information about the scale.

(i) Name of scale manufacturer.

(ii) Name of manufacturer's representative.

(iii) Mailing address of scale manufacturer and manufacturer's

representative.

(iv) Telephone and facsimile number of manufacturer's

representative.

(v) Model of scale.

(vi) Serial number of scale being tested.

(vii) Type of scale, choosing among belt, automatic hopper,

platform or hanging scale.

(2) Information about the certifying laboratory. (i) Name of

laboratory. (ii) Mailing address of laboratory. (iii) Telephone and

facsimile number of laboratory's representative. (iv) Name and address

of government agency accrediting the laboratory. (v) Name and signature

of person responsible for type evaluation certification and date of

signature.

(B) Type Evaluation Checklist. The certifying laboratory's

representative must indicate on the Type Evaluation Checklist form

whether the scale met applicable performance and technical requirements

specified in Appendix A (At-Sea Scales Handbook).

(C) Type Evaluation Test Report Forms. The certifying laboratory's

representative must provide the results of each applicable test

specified in Appendix A (At-Sea Scales Handbook) on the Type Evaluation

Test Report Form.

(ii) Alternative type evaluation certification documents. Scale

manufacturers may request that the Regional Administrator consider

tests performed on belt scales to meet the International Organization

of Legal Metrology's recommendations for continuous totalizing

automatic weighing instruments (OIML R-50) in accuracy class 2 as a

substitute for the requirements specified in Appendix A (At-Sea Scales

Handbook). The Regional Administrator will review these proposals to

determine whether the proposed test procedures and results comply with

the requirements in paragraph (b)(1) of this section.

(2) At-sea scale inspection certificate. Each scale or scale system

used to weigh catch at sea must be tested and certified by a scale

inspector authorized by the Regional Administrator upon initial

installation. The scale must be recertified each year within 12 months

of the date of the most recent certification. The scale also must be

certified after major modification or installation of the scale at a

different location on the vessel. An at-sea scale inspection

certificate will be issued by the inspector if the scale meets all

applicable requirements specified in Appendix A (At-Sea Scales

Handbook). In order to obtain an at-sea scale inspection certification,

the vessel owner must:

(i) Make the vessel and scale available for inspection by a scale

inspector authorized by the Regional Administrator after the vessel

owner has installed a model of scale on the Regional Administrator's

list of eligible at-sea scales described in paragraph (b)(1) of this

section. The time and place of the inspection may be arranged by

contacting the authorized scale inspectors. Scale inspections will be

scheduled no later than 10 working days after the day that the vessel

owner requests an inspection. Identity of authorized scale inspectors

can be obtained from NMFS.

(ii) Transport test weights, test material, and equipment required

to perform the test to and from the inspector's vehicle and the

location on the vessel where the scale is installed.

(iii) Apply test weights to the scale or convey test materials

across the scale, as requested by the scale inspector.

(iv) Assist the scale inspector in performing the scale inspection

and testing.

(v) Submit a copy of scale certification documents signed by the

weights and measures inspector to the Regional Administrator and

maintain a copy of these documents on board the vessel at all times

when the processor or vessel is required to use a certified scale.

These documents must be made available to the observer, NMFS personnel,

or an authorized officer upon request.

(vi) Make test material or test weights required for the at-sea

scale tests under paragraph (b)(3)(ii) of this section available to the

inspector at the time of the inspection.

(3) At-sea scale tests. Each scale or scale system used to weigh

catch at sea must be tested each 24-hour period in which fish are

weighed on the scale to verify that the scale is weighing test material

within 3 percent of its known weight. The vessel operator must:

(i) Notify the observer at least 15 minutes before the test will be

conducted and conduct the test while the observer is present.

(ii) Provide and maintain the following equipment or materials to

conduct the test on board the vessel at all times while a daily test is

required.

(A) Belt scales. The vessel operator must provide one of the

following to conduct a daily materials test.

(1) At least 400 kg of fish whose weight has been determined to the

nearest kg on a scale other than the scale under test. The scale used

to determine the known weight of the fish must weigh test weights to

within 1 percent of their known weight, or

(2) At least 400 kg of test material whose weight has been

determined to the nearest kg on a scale certified under this section or

certified by a state or local weights and measures official. The test

material must be described in writing. If the test material is

comprised of more than one package or unit of test material, each unit

must have a unique identification number or letter, and weight of the

unit indelibly marked on the exterior of the unit. The identification

number and weight of each unit of test material must be certified in

writing by the authorized scale inspector at the time of initial or

periodic inspection. Replacement units of test material manufactured on

board the vessel must be marked and weighed on a scale that meets the

requirements of paragraph (b)(3)(ii)(A)(1) of this section. The NMFS-

certified observer must witness the weighing of the replacement test

material. Written information including the date the replacement

material was weighed, the identification number and weight of the

replacement material, and the identification number and weight of test

material being replaced must be signed by the vessel operator and

maintained with the original scale certification documents on the

vessel.

(B) Other Types of Scales. The vessel operator must provide

certified test weights in an amount equal to the largest amount of fish

that will be weighed on the scale in one weighment. Each test weight

must have its weight stamped on or otherwise permanently affixed to it.

The weight of each test weight must be verified annually at the initial

or periodic scale inspection required under paragraph (b)(2) of this

section by the authorized weights and measures inspector.

(iii) Conduct the scale test by placing the test material or test

weights on or across the scale and recording the

[[Page 32570]]

following information on the at-sea scale test report form.

(A) Vessel name.

(B) Month, day, and year of test.

(C) Time test started to the nearest minute.

(D) Known weight of test material or test weights.

(E) Weight of test material or test weights recorded by scale.

(F) Percent error as determined by subtracting the known weight of

the test material or test weights from the weight recorded on the

scale, dividing that amount by the known weight of the test material or

test weights, and multiplying by 100.

(iv) Verify that the percent error in each scale test as determined

in paragraph (b)(3)(iii)(F) of this section is less than or equal to 3

percent. If the error exceeds this amount the scale may be retested,

recalibrated, or repaired. A scale test verifying that the scale is

weighing accurately must be conducted and recorded before the vessel

can continue weighing catch.

(v) Maintain the test report form on board the vessel until the end

of the fishing year during which the tests were conducted and make the

report forms available to observers, NMFS personnel, or an authorized

officer. In addition, the scale test report forms must be retained by

the vessel owner for 3 years after the end of the fishing year during

which the tests were performed. All scale test report forms must be

signed by the vessel operator.

(4) Scale maintenance. The vessel operator must maintain the scale

in proper operating condition throughout the period of its use and

assure that adjustments made to the scale are made so as to bring the

performance errors as close as practicable to a zero value.

(5) Printed reports from the scale. Printed reports from the scale

must be maintained on board the vessel until the end of the fishing

year during which the reports were made and be made available to

observers, NMFS personnel, or an authorized officer. In addition,

printed reports must be retained by the vessel owner for 3 years after

the end of the fishing year during which the printouts were made. All

printed reports from the scale must be signed by the vessel operator.

(i) Reports of catch weight. Reports must be printed at least once

each 24-hour period in which the scale is being used to weigh catch or

before any information stored in the scale computer memory is replaced.

The printed catch report must include the information specified in

Appendix A, sections 2.3.1.8, 3.3.1.7, or 4.3.1.5. The haul or set

number recorded on the scale print-out must correspond with haul or set

numbers recorded in the processor's daily cumulative production

logbook. Scale weights indicated by the scale may not be adjusted.

(ii) Printed report of scale tests or adjustments. The printed

report must include the information specified in Appendix A, sections

2.3.1.11(b), 3.3.1.12(b), and 4.3.1.8(b). 3. Appendix A to Part 679 is

added to read as follows:

Appendix A to Part 679--At-Sea Scales Handbook: Performance and

Technical Requirements for At-Sea Scales in the Groundfish Fisheries

off Alaska

Table of Contents

1.0 Introduction

2.0 Belt Scales

2.1 Applicability

2.2 Performance Requirements

2.2.1 Maximum Permissible Errors (mpe)

2.2.1.1 Laboratory Tests

2.2.1.2 Zero Load Tests

2.2.1.3 Material Tests

2.2.2 Minimum Flow Rate (Qmin)

2.2.3 Minimum Totalized Load (min)

2.2.4 Influence Quantities

2.2.4.1 Temperature

2.2.4.2 Power Supply

2.3 Technical Requirements

2.3.1 Indicators and Printers

2.3.1.1 General

2.3.1.2 Values Defined

2.3.1.3 Units

2.3.1.4 Value of the Scale Division

2.3.1.5 Range of Indication

2.3.1.6 Resettable

2.3.1.7 Rate of Flow Indicator

2.3.1.8 Printed Information

2.3.1.9 Permanence of Markings

2.3.1.10 Power Loss

2.3.1.11 Adjustable Components

2.3.2 Weighing Elements

2.3.2.1 Speed Measurement

2.3.2.2 Conveyer Belt

2.3.2.3 Overload Protection

2.3.2.4 Speed Control

2.3.2.5 Adjustable Components

2.3.2.6 Motion Compensation

2.3.3 Installation Conditions

2.3.4 Marking

2.3.4.1 Presentation

2.4 Tests

2.4.1 Minimum Test Load

2.4.2 Laboratory Tests

2.4.2.1 Influence Quantity and Disturbance Tests

2.4.2.2 Zero Load Tests

2.4.2.3 Material Tests

2.4.3 Initial and Periodic Scale Inspections

2.4.3.1 Zero Load Tests

2.4.3.2 Material Tests

3.0 Automatic Hopper Scales

3.1 Applicability

3.2 Performance Requirements

3.2.1 Maximum Permissible Errors (mpe)

3.2.1.1 Laboratory Tests

3.2.1.2 Increasing and Decreasing Load Tests

3.2.2 Minimum Weighment (min)

3.2.3 Minimum Totalized Load (Lot)

3.2.4 Influence Quantities

3.2.4.1 Temperature

3.2.4.2 Power Supply

3.3 Technical Requirements

3.3.1 Indicators and Printers

3.3.1.1 General

3.3.1.2 Values Defined

3.3.1.3 Units

3.3.1.4 Value of the Scale Division

3.3.1.5 Weighing Sequence

3.3.1.6 Printing Sequence

3.3.1.7 Printed Information

3.3.1.8 Permanence of Markings

3.3.1.9 Range of Indication

3.3.1.10 Non-resettable Values

3.3.1.11 Power Loss

3.3.1.12 Adjustable Components

3.3.1.13 Zero-Load Adjustment

3.3.1.14 Damping Means

3.3.2 Interlocks and Gate Control

3.3.3 Overfill Sensor

3.3.4 Weighing Elements

3.3.4.1 Overload Protection

3.3.4.2 Adjustable Components

3.3.4.3 Motion Compensation

3.3.5 Installation Conditions

3.3.6 Marking

3.3.6.1 Presentation

3.4 Tests

3.4.1 Standards

3.4.2 Laboratory Tests

3.4.2.1 Influence Quantity and Disturbance Tests

3.4.2.2 Performance Tests

3.4.3 Initial and Periodic Scale Inspections

4.0 Platform Scales and Hanging Scales

4.1 Applicability

4.2 Performance Requirements

4.2.1 Maximum Permissible Errors (mpe)

4.2.1.1 Laboratory Tests

4.2.1.2 Increasing and Decreasing Load and Shift Tests

4.2.2 Minimum Load

4.2.3 Influence Quantities

4.2.3.1 Temperature

4.2.3.2 Power Supply

4.3 Technical Requirements

4.3.1 Indicators and Printers

4.3.1.1 General

4.3.1.2 Values Defined

4.3.1.3 Units

4.3.1.4 Value of the Scale Division

4.3.1.5 Printed Information

4.3.1.6 Permanence of Markings

4.3.1.7 Power Loss

4.3.1.8 Adjustable Components

4.3.1.9 Zero-Load Adjustment

4.3.1.10 Damping Means

4.3.2 Weighing Elements

4.3.2.1 Overload Protection

4.3.2.2 Adjustable Components

4.3.2.3 Motion Compensation

4.3.3 Installation Conditions

4.3.4 Marking

4.3.4.1 Presentation

4.4 Tests

4.4.1 Standards

4.4.2 Laboratory Tests

4.4.2.1 Influence Quantities and Disturbance Tests

4.4.2.2 Performance Tests

4.4.3 Initial and Periodic Scale Inspections

5.0 Definitions

Annex A to Appendix A of Part 679--Influence Quantity and

Disturbance Tests

[[Page 32571]]

A.1 General

A.2 Test considerations

A.3 Tests

A.3.1 Static Temperatures

A.3.2 Damp Heat, Steady State

A.3.3 Power Voltage Variation

A.3.4 Short Time Power Reduction

A.3.5 Bursts

A.3.6 Electrostatic Discharge

A.3.7 Electromagnetic Susceptibility

1.0 Introduction

(a) This handbook contains the performance and technical

requirements for scales required under 50 CFR part 679 to weigh, at

sea, catch from the groundfish fisheries off Alaska. These

commercial fisheries are managed under the Fishery Management Plan

for Groundfish of the Gulf of Alaska and the Fishery Management Plan

for the Groundfish Fishery of the Bering Sea and Aleutian Islands

Area which were prepared by the North Pacific Fishery Management

Council under the Magnuson-Stevens Fishery Conservation and

Management Act (16 U.S.C. 1801, et seq.).

(b) This handbook was prepared by the National Marine Fisheries

Service, Alaska Regional Office, with the assistance of a contracted

technical advisor. The performance and technical requirements in

this document have not been reviewed or endorsed by the National

Conference on Weights and Measures. The handbook is published by

NMFS because specifications for scales used to weigh at sea have not

been developed by any national or international weights and measures

agency or organization.

(c) Revisions, amendments, or additions to this document may be

made by notification in the Federal Register and an opportunity for

public comment prior to a final decision on the amendments. Persons

wishing to propose amendments should submit proposals in writing to

the Administrator, Alaska Region, NMFS, P.O. Box 21668, Juneau, AK

99802.

(d) Types of scales covered by handbook--This handbook contains

performance and technical requirements for four types of scales.

Section 2 contains requirements for belt scales. Section 3 contains

requirements for automatic hopper scales. Section 4 contains

requirements for platform and hanging scales. Certification of any

other devices for use to weigh catch at sea will require an

amendment to Sec. 679.28 and this handbook (Appendix A).

(e) Testing and Certification Requirements for At-Sea Scales--

Scales used to weigh catch at sea are required to comply with

performance and technical requirements in four categories:

(1) Type evaluation or laboratory tests of each model of scale,

(2) initial inspection by an authorized weights and measures

inspector of each scale installed on a vessel; (3) periodic re-

inspection by an authorized weights and measures inspector; and (4)

at-sea tests of the scale's accuracy performed by vessel crew and

witnessed by a NMFS-certified observer. This handbook contains only

the performance and technical requirements for type evaluation and

certification by a weights and measures inspector. Regulations

implementing the requirements in this handbook and additional

requirements for scales certified to weigh catch at sea are found at

Sec. 679.28.

2.0 Belt Scales

2.1 Applicability. The requirements in this section apply to a

scale or scale system that employs a conveyor belt in contact with a

weighing element to determine the weight of a bulk commodity being

conveyed across the scale.

2.2 Performance Requirements--2.2.1 Maximum Permissible Errors

(mpe). The following mpes are specified for laboratory tests and

initial and periodic inspections of scales in a stationary

installation. A stationary vessel refers to a vessel that is tied up

at a dock or anchored near shore and is not under power at sea.

2.2.1.1 Laboratory Tests. Procedures for disturbance tests and

influence factors are in Annex A. The following mpes are specified

for these tests.

a. Disturbances. The mpe is 0.18 percent of the

weight of the load totalized.

b. Influence Factors. The mpe is 0.25 percent of the

weight of the load totalized.

c. Temperature Effect at Zero Flow Rate. The difference between

the values obtained at zero flow rate taken at temperatures that

differ by 10 deg. C must not be greater than 0.035 percent of the

weight of the load totalized at the maximum flow-rate for the time

of the test.

2.2.1.2 Zero Load Tests. The mpe for zero load tests conducted

in a laboratory or on a scale installed on a stationary vessel is

0.1 percent or 1 scale division (d).

2.2.1.3 Material Tests. The mpe for material tests conducted in

a laboratory or on a scale installed on a stationary vessel is

1.0 percent of the known weight of the test material.

2.2.2 Minimum Flow Rate (Qmin). The minimum flow rate must be

specified by the manufacturer and must not be greater than 35

percent of the rated capacity of the scale in kilograms (kg) or

metric tons per hour (mt/hr).

2.2.3 Minimum Totalized Load (min). The minimum

totalized load must not be less than the greater of:

a. 2 percent of the load totalized in 1 hour at the maximum flow

rate,

b. the load obtained at the maximum flow rate in 1 revolution of

the belt, or

c. a load equal to 800 scale divisions (d).

2.2.4 Influence Quantities. The following requirements apply to

influence factor tests conducted in the laboratory.

2.2.4.1 Temperature. A belt scale must comply with the

performance and technical requirements at a range of temperatures

from -10 deg. C to +40 deg. C. However, for special applications the

temperature range may be different, but the range must not be less

than 30 deg. C and must be so specified on the descriptive markings.

2.2.4.2 Power Supply. A belt scale must comply with the

performance and technical requirements when operated within a range

of -15 percent to +10 percent of the power supply specified on the

descriptive markings.

2.3 Technical Requirements.

2.3.1 Indicators and Printers.

2.3.1.1 General. A belt scale must be equipped with a primary

indicator in the form of a master weight totalizer, a printer, and a

rate of flow indicator. It must also be equipped with auxiliary

means to indicate or print values for specified partial loads. The

indications and printed representations must be clear, definite,

accurate, and easily read under any conditions of normal operation

of the belt scale.

2.3.1.2 Values Defined. If indications or printed

representations are intended to have specific values, these must be

defined by a sufficient number of figures, words, or symbols,

uniformly placed with reference to the indications or printed

representations and as close as practicable to the indications or

printed representations, but not so positioned as to interfere with

the accuracy of reading.

2.3.1.3 Units. The weight units indicated must be in terms of

kilograms.

2.3.1.4 Value of the Scale Division. The value of the scale

division (d) expressed in a unit of weight must be equal to 1, 2, or

5, or a decimal multiple or sub-multiple of 1, 2, or 5.

2.3.1.5 Range of Indication. The master weight totalizer must

be capable of indicating at least 99,999,999 kilograms. The

auxiliary means must be capable of indicating at least the weight of

the amount of fish that can be harvested in 1 haul or set.

2.3.1.6 Resettable. The master weight totalizer must not be

resettable to zero without breaking a security means. The auxiliary

means to indicate or print specified partial loads must be

resettable to zero.

2.3.1.7 Rate of Flow Indicator. Permanent means must be

provided to produce an audio or visual signal when the rate of flow

is less than the minimum flow rate or greater than 98 percent of the

maximum flow rate.

2.3.1.8 Printed Information. The information printed must

include:

a. For fish weight:

i. the Federal fisheries or processor permit number;

ii. the haul or set number;

iii. month, day, year, and time (to the nearest minute) weighing

catch from the haul or set started;

iv. month, day, year, and time (to the nearest minute) weighing

catch from the haul or set ended; and

v. the total cumulative weight of catch in the haul or set for

each haul or set.

b. For the event logger: information specified in Section

2.3.1.11.b.

2.3.1.9 Permanence of Markings. All required indications,

markings, and instructions must be distinct and easily readable and

must be of such character that they will not tend to become

obliterated or illegible.

2.3.1.10 Power Loss. In the event of a power failure, means

must be provided to retain in a memory the totalized load.

2.3.1.11 Adjustable Components.

a. An adjustable component that can affect the performance of

the scale must be held securely in position and must not be capable

of adjustment without breaking a security means, or

b. An audit trail in the form of an event logger must provide

the following information in electronic and printed form:

[[Page 32572]]

1. a unique identifying number from 000 to 999 to identify the

type of adjustment being made to any parameter that affects the

performance of the scale,

2. the parameter and amount of change,

3. the source of the change, and

4. the date and time (to the nearest minute) of the change.

2.3.2 Weighing Elements.

2.3.2.1 Speed Measurement. A belt scale must be equipped with

means to accurately sense the belt travel and/or speed whether the

belt is loaded or empty.

2.3.2.2 Conveyer Belt. The weight per unit length of the

conveyor belt must be practically constant. Belt joints must be such

that there are no significant effects on the weighing results.

2.3.2.3 Overload Protection. The load receiver must be equipped

with means so that an overload of 150 percent or more of the

capacity must not affect the metrological characteristics of the

belt scale.

2.3.2.4 Speed Control. The speed of the belt must not vary by

more than 5 percent of the nominal speed.

2.3.2.5 Adjustable Components. An adjustable component that can

affect the performance of the belt scale must be held securely in

position and must not be capable of adjustment without breaking a

security means.

2.3.2.6 Motion Compensation. A belt scale must be equipped with

automatic means to compensate for the motion of a vessel at sea so

that the weight values indicated are within the maximum permissible

errors. Such means shall be a reference load cell and a reference

mass weight or other equally effective means. When equivalent means

are utilized, the manufacturer must provide NMFS with laboratory or

field test results demonstrating that the scale can weigh accurately

at sea.

2.3.3 Installation Conditions. A belt scale must be rigidly

installed in a level condition.

2.3.4 Marking. A belt scale must be marked with the following:

a. Name, initials, or trademark of the manufacturer or

distributer.

b. Model designation.

c. Non-repetitive serial number.

d. Maximum flow rate (Qmax).

e. Minimum flow rate (Qmin).

f. Minimum totalized load (min).

g. Belt speed.

h. Weigh length.

i. Maximum capacity (Max).

j. Temperature range (if applicable).

k. Mains voltage.

2.3.4.1 Presentation. The markings must be reasonably permanent

and of such size, shape, and clarity to provide easy reading in

normal conditions of use. They must be grouped together in a place

visible to the operator.

2.4 Tests.

2.4.1 Minimum Test Load. The minimum test load must be the

greater of:

a. 2 percent of the load totalized in 1 hour at the maximum flow

rate,

b. the load obtained at maximum flow rate in one revolution of

the belt, or

c. a load equal to 800 scale divisions.

2.4.2 Laboratory Tests.

2.4.2.1 Influence Quantity and Disturbance Tests. Tests must be

conducted according to Annex A and the results of these tests must

be within the values specified in section 2.2.1.1.

2.4.2.2 Zero Load Tests. A zero load test must be conducted for

a time equal to that required to deliver the minimum totalized load

(min). At least two zero load tests must be conducted prior

to a material test. The results of these tests must be within the

values specified in section 2.2.1.2.

2.4.2.3 Material Tests. At least one material test must be

conducted with the weight of the material or simulated material

equal to or greater than the minimum test load. The results of these

tests must be within the values specified in section 2.2.1.3.

2.4.3 Initial and Periodic Scale Inspections.

2.4.3.1 Zero Load Tests. A zero load test must be conducted for

a time equal to that required to deliver the minimum totalized load

(min). At least one zero load test must be conducted prior

to each material test. The results of this test must be within the

values specified in section 2.2.1.2.

2.4.3.2 Material Tests. At least one material or simulated

material test must be conducted with the weight of the material or

simulated material equal to or greater than the minimum test load.

The results of these tests must be within the values specified in

section 2.2.1.3.

3.0 Automatic Hopper Scales

3.1 Applicability. The requirements in this section apply to a

scale or scale system that is designed for automatic weighing of a

bulk commodity in predetermined amounts.

3.2 Performance Requirements--3.2.1 Maximum Permissible Errors

(mpe). The following mpes are specified for laboratory tests and

initial and periodic inspections of scales in a stationary

installation. A stationary vessel refers to a vessel that is tied up

at a dock or anchored near shore and is not under power at sea.

3.2.1.1 Laboratory Tests. Procedures for disturbance tests and

influence factors are in Annex A. The following mpes are specified

for these tests.

a. Disturbances. Significant fault (sf) (1 scale

division).

b. Influence Factors. The mpe is 0.1 percent of test

load.

3.2.1.2 Increasing and Decreasing Load Tests. The mpe for

increasing and decreasing load tests conducted in a laboratory or on

a scale installed on a stationary vessel is 1.0 percent

of the test load.

3.2.2 Minimum Weighment (min). The minimum weighment

must not be less than 20 percent of the weighing capacity, or a load

equal to 100 scale intervals (d), except for the final weighment of

a lot.

3.2.3 Minimum Totalized Load (Lot). The minimum totalized load

must not be less than 4 weighments.

3.2.4 Influence Quantities. The following requirements apply to

influence factor tests conducted in the laboratory.

3.2.4.1 Temperature. A hopper scale must comply with the

metrological and technical requirements at temperatures from

-10 deg. C to +40 deg. C. However, for special applications the

temperature range may be different, but the range must not be less

than 30 deg. C and must be so specified on the descriptive markings.

3.2.4.1.1 Operating Temperature. A hopper scale must not

display or print any usable weight values until the operating

temperature necessary for accurate weighing and a stable zero-

balance condition have been attained.

3.2.4.2 Power Supply. A hopper scale must comply with the

performance and technical requirements when operated within -15

percent to +10 percent of the power supply specified on the

descriptive markings.

3.3 Technical Requirements--3.3.1 Indicators and Printers--

3.3.1.1 General. A hopper scale must be equipped with an indicator

and a printer that indicates and prints the weight of each load and

a no-load reference value and also the total accumulated weight of a

lot. It must also be equipped with auxiliary means to indicate or

print values for a final partial load. The indications and printed

information must be clear, definite, accurate, and easily read under

any conditions of normal operation of the hopper scale.

3.3.1.2 Values Defined. If indications or printed

representations are intended to have specific values, these must be

defined by a sufficient number of figures, words, or symbols,

uniformly placed with reference to the indications or printed

representations and as close as practicable to the indications or

printed representations but not so positioned as to interfere with

the accuracy of reading.

3.3.1.3 Units. The weight units indicated must be in terms of

kilograms.

3.3.1.4 Value of the Scale Division. The value of the scale

division (d) expressed in a unit of weight must be equal to 1, 2, or

5, or a decimal multiple or sub-multiple of 1, 2, or 5.

3.3.1.5 Weighing Sequence. For hopper scales used to receive

(weigh in), the no-load reference value must be determined and

printed only at the beginning of each weighing cycle. For hopper

scales used to deliver (weigh out), the no-load reference value must

be determined and printed only after the gross load weight value for

each weighing cycle has been indicated and printed.

3.3.1.6 Printing Sequence. Provision must be made so that all

weight values are indicated until the completion of the printing of

the indicated values.

3.3.1.7 Printed Information. The information printed must

include:

a. For fish weight:

i. The Federal fisheries or processor permit number.

ii. The haul or set number.

iii. Month, day, year, and time (to the nearest minute) that

weighing catch from the haul or set started.

iv. Month, day, year, and time (to the nearest minute) that

weighing catch from the haul or set ended.

v. Net weight of the individual loads and the totalized weight

of the fish in a haul or set.

b. For the event logger: Information specified in Section

3.3.1.12.b.

3.3.1.8 Permanence of Markings. All required indications,

markings, and instructions must be distinct and easily readable and

must be of such character that

[[Page 32573]]

they will not tend to become obliterated or illegible.

3.3.1.9 Range of Indication. The total accumulated weight

indicator and printer must be capable of indicating and printing at

least 99,999,999 kg. The auxiliary means must be capable of

indicating at least the weight of the amount of fish that can be

harvested in 1 haul or set.

3.3.1.10 Non-resettable Values. The totalized accumulated

weight must not be resettable to zero without breaking a security

means.

3.3.1.11 Power Loss. In the event of a power failure, means

must be provided to retain in a memory the total accumulated weight.

3.3.1.12 Adjustable Components.

a. An adjustable component that can affect the performance of

the hopper scale must be held securely in position and must not be

capable of adjustment without breaking a security means, or

b. An audit trail in the form of an event logger must provide

the following information in electronic and printed form:

1. A unique identifying number from 000 to 999 to identify the

type of adjustment being made to any parameter that affects the

performance of the scale.

2. The parameter and amount of change.

3. The source of the change.

4. The date and time (to the nearest minute) of the change.

3.3.1.13 Zero-Load Adjustment. A hopper scale must be equipped

with a manual or semi-automatic (push-button) means that can be used

to adjust the zero-load balance or no-load reference value.

3.3.1.13.1 Manual. A manual means must be operable or

accessible only by a tool outside of, or entirely separate from,

this mechanism or enclosed in a cabinet.

3.3.1.13.2 Semi-automatic. A semi-automatic means must only be

operable when the indication is stable within 1 scale

division, and cannot be operated during a weighing cycle

(operation).

3.3.1.14 Damping Means. A hopper scale must be equipped with

effective automatic means to bring the indications quickly to a

readable stable equilibrium. Effective automatic means must also be

provided to permit the recording of weight values only when the

indication is stable within plus or minus one scale division.

3.3.2 Interlocks and Gate Control. A hopper scale must have

operating interlocks so that:

a. Product cannot be weighed if the printer is disconnected or

subject to a power loss.

b. The printer cannot print a weight if either of the gates

leading to or from the weigh hopper is open.

c. The low paper sensor of the printer is activated.

d. The system will operate only in the sequence intended.

e. If the overfill sensor is activated, this condition is

indicated to the operator and printed.

3.3.3 Overfill Sensor. The weigh hopper must be equipped with

an overfill sensor that will cause the feed gate to close, activate

an alarm, and stop the weighing operation until the overfill

condition has been corrected.

3.3.4 Weighing Elements.

3.3.4.1 Overload Protection. The weigh hopper must be equipped

with means so that an overload of 150 percent or more of the

capacity of the hopper must not affect the metrological

characteristics of the belt scale.

3.3.4.2 Adjustable Components. An adjustable component that can

affect the performance of the hopper scale must be held securely in

position and must not be capable of adjustment without breaking a

security means.

3.3.4.3 Motion Compensation. A hopper scale must be equipped

with automatic means to compensate for the motion of a vessel at sea

so that the weight values indicated are within the maximum

permissible errors. Such means shall be a reference load cell and a

reference mass weight or other equally effective means. When

equivalent means are utilized, the manufacturer must provide NMFS

with laboratory or field test results demonstrating that the scale

can weigh accurately at sea.

3.3.5 Installation Conditions. A hopper scale must be rigidly

installed in a level condition.

3.3.6 Marking. A hopper scale must be marked with the

following:

a. Name, initials, or trademark of the manufacturer or

distributer.

b. Model designation.

c. Non-repetitive serial number.

d. Maximum capacity (Max).

e. Minimum capacity (min).

f. Minimum totalized load (min).

g. Minimum weighment.

h. Value of the scale division (d).

i. Temperature range (if applicable).

j. Mains voltage.

3.3.6.1 Presentation. Descriptive markings must be reasonably

permanent and grouped together in a place visible to the operator.

3.4 Tests.

3.4.1 Standards. The error of the standards used must not

exceed 25 percent of the mpe to be applied.

3.4.2 Laboratory Tests.

3.4.2.1 Influence Quantity and Disturbance Tests. Tests must be

conducted according to Annex A and the results of these tests must

be within the values specified in section 3.2.1.1.

3.4.2.2 Performance Tests. Performance tests must be conducted

as follows:

a. Increasing load test. At least five increasing load tests

must be conducted with test loads at the minimum load, at a load

near capacity, and at 2 or more critical points in between.

b. Decreasing load test. A decreasing load test must be

conducted with a test load approximately equal to one-half capacity

when removing the test loads of an increasing load test.

3.4.3 Initial and Periodic Scale Inspections.

At least two increasing load tests and two decreasing load tests

must be conducted as specified in 3.4.2.2. Additionally, tests must

be conducted with test loads approximately equal to the weight of

loads at which the scale is normally used.

4.0 Platform Scales and Hanging Scales

4.1 Applicability. The requirements in this section apply to

platform and hanging scales.

4.2 Performance Requirements.

4.2.1 Maximum Permissible Errors (mpe). The following mpes are

specified for laboratory tests and initial and periodic inspections

of scales in a stationary installation. A stationary vessel refers

to a vessel that is tied up at a dock or anchored near shore and is

not under power at sea.

4.2.1.1 Laboratory Tests. Procedures for disturbance tests and

influence factors are in Annex A. The following mpes are specified

for these tests.

a. Disturbances. Significant fault (1 scale

division)

b. Influence Factors. Mpes are in Table 1 below.

4.2.1.2 Increasing and Decreasing Load and Shift Tests. The

mpes for increasing and decreasing load and shift tests conducted in

a laboratory or on a scale installed on a stationary vessel are in

Table 1.

Table 1

------------------------------------------------------------------------

Test load in scale divisions (d) Maximum permissible

------------------------------------------------ error (d)

------------------------

Type

Class III Class IIII Evaluation In-

and Initial service

verification

------------------------------------------------------------------------

0 500 0 50 0.5 1

500 50 200 1.0 2

2000

2000 1 scale division and cannot be operated

during a weighing cycle (operation).

4.3.1.10 Damping Means. A scale must be equipped with effective

automatic means to bring the indications quickly to a readable

stable equilibrium. Effective automatic means must also be provided

to permit the recording of weight values only when the indication is

stable within plus or minus one scale division.

4.3.2 Weighing Elements--4.3.2.1 Overload Protection. The scale

must be so designed that an overload of 150 percent or more of the

capacity must not affect the metrological characteristics of the

scale.

4.3.2.2 Adjustable Components. An adjustable component that can

affect the performance of the scale must be held securely in

position and must not be capable of adjustment without breaking a

security means.

4.3.2.3 Motion Compensation. A hopper scale must be equipped

with automatic means to compensate for the motion of a vessel at sea

so that the weight values indicated are within the maximum

permissible errors. Such means shall be a reference load cell and a

reference mass weight or other equally effective means. When

equivalent means are utilized, the manufacturer must provide NMFS

with laboratory or field test results demonstrating that the scale

can weigh accurately at sea.

4.3.3 Installation Conditions. A platform scale must be rigidly

installed in a level condition. A hanging scale must be freely

suspended from a fixed support or a crane when in use.

4.3.4 Marking. A scale must be marked with the following:

a. Name, initials, or trademark of the manufacturer or

distributer.

b. Model designation.

c. Non-repetitive serial number.

d. Maximum capacity (Max).

e. Minimum capacity (min).

f. Temperature range (if applicable).

g. Mains voltage.

4.3.4.1 Presentation. Descriptive markings must be reasonably

permanent and grouped together in a place visible to the operator.

4.4 Tests.

4.4.1 Standards. The error of the standards used must not

exceed 25 percent of the mpe applied.

4.4.2 Laboratory Tests--4.4.2.1 Influence Quantities and

Disturbance Tests. Tests must be conducted according to Annex A and

the results of these tests must be within the values specified in

section 4.2.1.1.

4.4.2.2 Performance Tests. Performance tests must be conducted

as follows:

a. Increasing load test. At least five increasing load tests

must be conducted with test loads at the minimum load, at a load

near capacity, and at 2 or more critical points in between.

b. Shift test (platform scales only). A shift test must be

conducted during the increasing load test at one-third capacity test

load centered in each quadrant of the platform.

c. Decreasing load test. A decreasing load test must be

conducted with a test load approximately equal to one-half capacity

when removing the test loads of an increasing load test.

4.4.3 Initial and Periodic Scale Inspections.

At least two increasing load tests, shift tests, and decreasing

load tests must be conducted as specified in 4.4.2.2. Additionally

tests must be conducted with test loads approximately equal to the

weight of loads at which the scale is normally used. The results of

all tests must be as specified in Table 1.

5.0 Definitions

Audit trail--An electronic count and/or information record of

the changes to the values of the calibration or configuration

parameters of a device.

Automatic Hopper Scale--A hopper scale adapted to the automatic

weighing of a bulk commodity (fish) in predetermined amounts.

Capacities vary from 50 lb (22.7 kg) to 100,000 lb (45.36 mt).

Generally equipped with a control panel, with functions to be set by

an operator, including the start of an automatic operation. (See

definition of hopper scale).

Belt Scale--A scale that employs a conveyor belt in contact with

a weighing element to determine the weight of a bulk commodity being

conveyed. It is generally a part of a system comprised of an input

conveyor, the flow scale, and an output conveyor. The conveyor belt

may be constructed of various materials, including vulcanized

rubber, canvas, and plastic. The capacity is generally specified in

terms of the amount of weight that can be determined in a specified

time, and can vary from for example 1 ton per hour to 100 or more

tons per hour. An operator generally directs the flow of product

onto the input conveyor.

Calibration Mode--A means by which the span of a scale can be

adjusted by placing a known ``test weight'' on the scale and

manually operating a key on a key board.

Disturbances--An influence that may occur during the use of a

scale but is not within the rated operating conditions of the scale.

Event logger--A form of audit trail containing a series of

records where each record contains the number from the event counter

corresponding to the change to a

[[Page 32575]]

sealable parameter, the identification of the parameter that was

changed, the time and date when the parameter was changed, and the

new value of the parameter.

Final Weighment--The last partial load weighed on a hopper scale

that is part of the weight of many loads (haul, set, etc.).

Hanging Scale--A scale that is designed to weigh a load that is

freely suspended from an overhead crane or it may be permanently

installed in an overhead position. The load receiver may be a part

of the scale such as a pan suspended on chains, or simply a hook

that is used to ``pick-up'' the container of the commodity to be

weighed. The technology employed may be mechanical, electro-

mechanical, or electronic. The loads can be applied either manually

or by such means as a crane.

Hopper Scale--A scale designed for weighing individual loads of

a bulk commodity (fish). The load receiver is a cylindrical or

rectangular container mounted on a weighing element. The weighing

element may be mechanical levers, a combination of levers and a load

cell, or all load cells. The capacity can vary from 50

lb (22.7 kg) to > 100,000 lb (45.36 mt). The loads are applied from

a bulk source by such means as a conveyor or storage hopper. Each

step of the weighing process, that is the loading and unloading of

the weigh hopper, is controlled by an operator.

Indicator--That part of a scale that indicates the quantity that

is being weighed.

Influence Factor--A value of an influence quantity, e.g.,

10 deg., that specifies the limits of the rated operating conditions

of the scale.

Influence Quantity--A quantity that is not the subject of the

measurement but which influences the measurement obtained within the

rated operating conditions of the scale.

Influence Quantity and Disturbance Tests--Type evaluation tests

conducted in a laboratory to determine the capability of the scale

under test to perform correctly in the environmental influences in

which they are used and when subjected to certain disturbances that

may occur during the use of the scale.

Initial Verification--The first evaluation (inspection and test)

of a production model of a weighing instrument that has been type

evaluated to determine that the production model is consistent with

the model that had been submitted for type evaluation.

Known Weight Test--A test in which the load applied is a test

weight with a known value simulating the weight of the material that

is usually weighed.

Load Receiver--That part of the scale in which the quantity is

placed when being weighed.

Material Test--A test using a material that is the same or

similar to the material that is usually weighed, the weight of which

has been determined by a scale other than the scale under test.

Maximum flow-rate--The maximum flow-rate of material specified

by the manufacturer at which a belt scale can perform correctly.

Minimum flow-rate--The minimum flow-rate specified by the

manufacturer at which a belt scale can perform correctly.

Minimum Load--The smallest weight load that can be determined by

the scale that is considered to be metrologically acceptable.

Minimum Totalized Load--The smallest weight load that can be

determined by a belt scale that is considered to be metrologically

acceptable.

Minimum Weighment--The smallest weight that can be determined by

a hopper scale that is considered to be metrologically acceptable.

Motion Compensation--The means used to compensate for the motion

of the vessel at sea.

No-load Reference Value--A weight value obtained by a hopper

scale when the load receiver (hopper) is empty of the product that

was or is to be weighed.

Non-repeatable Weighment--A process where the product after

being weighed is disposed with in such a manner that it cannot be

retrieved to be reweighed.

Number of Scale Divisions (n)--The number of scale divisions of

a scale in normal operation. It is the quotient of the scale

capacity divided by the value of the scale division. n = Max/d

Performance Requirements--A part of the regulations or standards

that applies to the weighing performance of a scale, e.g., maximum

permissible errors.

Performance Test--A test conducted to determine that the scale

is performing within the maximum permissible errors applicable.

Periodic Verification--A verification of a weighing instrument

at an interval that is specified by regulation or administrative

ruling.

Platform Scale--A scale by the nature of its physical size,

arrangement of parts, and relatively small capacity (generally 500

lb (226.8 kg) or less) that is adapted for use on a bench or counter

or on the floor. Load receiver dimensions include, for example, 5

x 5 inches (12.25 x 12.24 cm), 18 x 24 inches (45.7 x 61.0

cm), and 30 x 30 inches (76.2 x 76.2 cm). A platform scale can

be self contained, that is, the indicator and load receiver and

weighing elements are all comprised of a single unit, or the

indicator can be connected by cable to a separate load receiver and

weighing element. The technology used may be mechanical, electro-

mechanical, or electronic. Loads are applied manually.

Rated Capacity--The maximum flow-rate in terms of weight per

unit time specified by the manufacturer at which a belt scale can

perform correctly.

Scale Division (d)--The smallest digital subdivision in units of

mass that is indicated by the weighing instrument in normal

operation.

Sealing--A method used to prevent the adjustment of certain

operational characteristics or to indicate that adjustments have

been made to those operational characteristics.

Security Seals or Means--A physical seal such as a lead and wire

seal or a key or code that when a change is made in the operating or

performance characteristics of a scale it becomes evident.

Significant Fault--An error greater than the value specified for

a particular scale. For a belt scale: A fault greater than 0.18

percent of the weight value equal to the minimum totalized load. For

all other scales: 1 scale division (d). A significant fault does not

include faults that result from simultaneous and mutually

independent causes in the belt scale; faults that imply the

impossibility of performing any measurement; transitory faults that

are momentary variations in the indications that cannot be

interpreted, memorized, or transmitted as a measurement result;

faults so serious that they will inevitably be noticed by those

interested in the measurement.

Simulated Material Test--A test in which the load applied is

test material simulating the weight of the material that is usually

weighed.

Simulated Test--A test in which the weight indications are

developed by means other than weight, e.g., a load cell simulator.

Stationary Installation--An installation of a scale in a

facility on land or a vessel that is tied-up to a dock or in dry

dock.

Subsequent Verification--Any evaluation of a weighing instrument

following the initial verification.

Suitability for Use--A judgement that must be made that certain

scales by nature of their design are appropriate for given weighing

applications.

Technical Requirements--A part of the regulations or standards

that applies to the operational functions and characteristics of a

scale, e.g., capacity, scale division, tare.

Testing Laboratory--A facility for conducting type evaluation

examinations of a scale that can establish its competency and

proficiency by such means as ISO Guide 25, ISO 9000, EN 45011,

NVLAP, NTEP).

Type Evaluation--A process for evaluating the compliance of a

weighing instrument with the appropriate standard or regulation.

User Requirements--A part of the regulations or standards that

applies to the operator/owner of the scale.

Weighment--A single complete weighing operation.

Annex A to Appendix A--Influence Quantity and Disturbance Tests

A.1 General--Included in this Annex are tests that are intended

to ensure that electronic scales can perform and function as

intended in the environment and under the conditions specified. Each

test indicates, where appropriate, the reference condition under

which the intrinsic error is determined.

A.2 Test Considerations

A.2.1 All electronic scales of the same category must be

subjected to the same performance test program.

A.2.2 Tests must be carried out on fully operational equipment

in their normal operational state. When connected in other than a

normal configuration, the procedure must be mutually agreed to by

NMFS and the applicant.

A.2.3 When the effect of one factor is being evaluated, all

other factors are to be held relatively constant, at a value close

to normal.

A.2.3.1 The temperature is deemed to be practically constant

when the difference between the extreme temperatures noted during

the test does not exceed 5 deg. C and the variation in time does not

exceed 5 deg. C per hour.

[[Page 32576]]

A.2.4 Energize the equipment under test (EUT) for a period of

time at least equal to the warm-up time specified by the

manufacturer and maintain throughout the duration of the test.

A.3 Tests

------------------------------------------------------------------------

Characteristics Conditions

Test under test applied

------------------------------------------------------------------------

A.3.1 Static temperatures...... Influence factor... mpe

A.3.2 Damp heat, steady state.. Influence factor... mpe

A.3.3 Power voltage variation.. Influence factor... mpe

A.3.4 Short time power Disturbance........ sf

reduction.

A.3.5 Bursts................... Disturbance........ sf

A.3.6 Electrostatic discharge.. Disturbance........ sf

A.3.7 Electromagnetic Disturbance........ sf

susceptibility.

------------------------------------------------------------------------

A.3 Tests

A.3.1 Static Temperatures

Test method: Dry heat (non condensing) and cold.

Object of the test: To verify compliance with the applicable

maximum permissible under conditions of high and low temperature.

Reference to standard: See Bibliography (1).

Test procedure in brief: The test consists of exposure of the

EUT to the high and low temperatures specified in section 2.2.4.1

for belt scales, section 3.2.4.1 for automatic hopper scales, and

section 4.2.3.1 for platform scales and hanging scales, under ``free

air'' condition for a 2-hour period after the EUT has reached

temperature stability. The EUT must be tested during a weighing

operation consisting of:

For belt scales--the totalization of the

min, 2 times each at approximately the minimum

flow rate, an intermediate flow rate, and the maximum flow rate.

For platform, hanging, and automatic hopper scales--tested with

at least five different test loads or simulated loads under the

following conditions:

a. At a reference temperature of 20 deg.C following

conditioning.

b. At the specified high temperature, 2 hours after achieving

temperature stabilization.

c. At the specified low temperature, 2 hours after achieving

temperature stabilization.

d. At a temperature of 5 deg. C, 2 hours after achieving

temperature stabilization.

e. After recovery of the EUT at the reference temperature of

20 deg. C.

Test severities: Duration: 2 hours.

Number of test cycles: At least one cycle.

Maximum allowable variations:

All functions must operate as designed.

All indications must be within the applicable maximum

permissible errors.

Conduct of test: Refer to the International Electrotechnical

Commission (IEC) Publications mentioned in Bibliography (1) for

detailed test procedures.

Supplementary information to the IEC test procedures

Preconditioning: 16 hours.

Condition of EUT: Normal power supplied and ``on'' for a time

period equal to or greater than the warm-up time specified by the

manufacturer. Power is to be ``on'' for the duration of the test.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

Stabilize the EUT in the chamber at a reference temperature of

20 deg. C. Conduct the tests as specified in the test procedure in

brief and record the following data:

a. Date and time.

b. Temperature.

c. Relative humidity.

d. Test load.

e. Indication.

f. Errors.

g. Functions performance.

Increase the temperature in the chamber to the high temperature

specified. Check by measurement that the EUT has reached temperature

stability and maintain the temperature for 2 hours. Following the 2

hours, repeat the tests and record the test data indicated above.

Reduce the temperature in the chamber as per the IEC procedures

to the low temperature specified. After temperature stabilization,

allow the EUT to soak for 2 hours. Following the 2 hours, repeat the

tests and record the test data as indicated above.

Raise the temperature in the chamber as per the IEC procedures

to 5 deg. C. After temperature stabilization, allow the EUT to soak

for 2 hours. Following the 2 hours, repeat the tests and record the

test data as indicated above. Note: This test relates to a -10 deg.

C to +40 deg. C range. For special ranges, it may not be necessary.

Raise the temperature in the chamber as per the IEC procedures

and to the 20 deg. C reference temperature. After recovery, repeat

the tests and record the test data as indicated above.

A.3.2 Damp Heat, Steady State

Test method: Damp heat, steady state.

Object of the test: To verify compliance with the applicable

maximum permissible errors under conditions of high humidity and

constant temperature.

Reference to standard: See Bibliography (2).

Test procedure in brief: The test consists of exposure of the

EUT to a constant temperature at the upper limit of the temperature

range and a constant relative humidity of 85 percent for a two day

period. The EUT must be tested during a weighing operation

consisting of:

For belt scales--the totalization of the

min, 2 times each at approximately the minimum

flow rate, an intermediate flow rate, and the maximum flow rate.

For platform, hanging, and automatic hopper scales--tested with

at least five different test loads or simulated loads at a reference

temperature of 20 deg. C and a relative humidity of 50 percent

following conditioning, and at the upper limit temperature and a

relative humidity of 85 percent, 2 days following temperature and

humidity stabilization.

Test severities:

Temperature: upper limit.

Humidity: 85 percent (non-condensing).

Duration: 2 days.

Number of test cycles: At least one test.

Maximum allowable variations:

All functions must operate as designed.

All indications must be within the applicable maximum

permissible errors.

Conduct of the test: Refer to the IEC Publications mentioned in

Bibliography (2) for detailed test procedures.

Supplementary information to the IEC test procedures

Preconditioning: None required.

Condition of EUT:

Normal power supplied and ``on'' for a time period equal to or

greater than the warm-up time specified by the manufacturer. Power

is to be ``on'' for the duration of the test.

The handling of the EUT must be such that no condensation of

water occurs on the EUT.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

Allow 3 hours for stabilization of the EUT at a reference

temperature of 20 deg. C and a relative humidity of 50 percent.

Following stabilization, conduct the tests as specified in the test

procedures in brief and record the following data:

a. Date and time.

b. Temperature.

c. Relative humidity.

d. Test load.

e. Indication.

f. Errors.

g. Functions performance.

Increase the temperature in the chamber to the specified high

temperature and a relative humidity of 85 percent. Maintain the EUT

at no load for a period of 2 days. Following the 2 days, repeat the

tests and record the test data as indicated above.

Allow full recovery of the EUT before any other tests are

performed.

A.3.3 Power Voltage Variation

A.3.3.1 AC power supply

Test method: Variation in AC mains power supply (single phase).

Object of the test: To verify compliance with the applicable

maximum permissible errors under conditions of varying AC mains

power supply.

Reference to standard: See Bibliography (3)

Test procedure in brief: The test consists of subjecting the EUT

to AC mains power during a weighing operation consisting of:

For belt scales--while totalizing the min at

the maximum flow rate.

For platform, hanging, and automatic hopper scales--at no load

and a test load between 50 percent and 100 percent of weighing

capacity.

Test severities: Mains voltage: upper limit U (nom) +10 percent;

lower limit U (nom) -15 percent.

Number of test cycles: At least one cycle.

Maximum allowable variations:

[[Page 32577]]

All functions must operate correctly.

All indications must be within maximum permissible errors

specified in sections 2, 3, or 4 of this handbook.

Conduct of the test:

Preconditioning: None required.

Test equipment: Variable power source, Calibrated voltmeter,

Load cell simulator, if applicable.

Condition of EUT:

Normal power supplied and ``on'' for a time period equal to or

greater than the warm-up time specified by the manufacturer.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

Stabilize the power supply at nominal voltage 2

percent.

Conduct the tests specified in the test procedure in brief and

record the following data:

date and time,

temperature,

relative humidity,

power supply voltage,

test load,

indications,

errors,

functions performance.

Reduce the power supply to -15 percent nominal.

Repeat the test and record the test data as indicated above.

Increase the power supply to +10 percent nominal.

Repeat the test and record the test data as indicated above.

Unload the EUT and decrease the power supply to nominal power

2 percent.

Repeat the test and record the test data as indicated above.

Note: In case of three phase power supply, the voltage variation

must apply for each phase successively. Frequency variation applies

for all phases simultaneously.

A.3.3.2 DC power supply

Under consideration.

A.3.4 Short Time Power Reduction

Test method: Short time interruptions and reductions in mains

voltage.

Object of the test: To verify compliance with the applicable

significant fault under conditions of short time mains voltage

interruptions and reductions.

Reference to standard: See Bibliography (4) IEC Publication

1000-4-11 (1994).

Test procedure in brief: The test consists of subjecting the EUT

to voltage interruptions from nominal voltage to zero voltage for a

period equal to 8-10 ms, and from nominal voltage to 50 percent of

nominal for a period equal to 16-20 ms. The mains voltage

interruptions and reductions must be repeated ten times with a time

interval of at least 10 seconds. This test is conducted during a

weighing operation consisting of:

For belt scales--while totalizing at the maximum flow rate at

least the min (or a time sufficient to complete

the test).

For platform, hanging, and automatic hopper scales--tested with

one small test load or simulated load.

Test severities: One hundred percent voltage interruption for a

period equal to 8-10 ms. Fifty percent voltage reduction for a

period equal to 16-20 ms.

Number of test cycles: Ten tests with a minimum of 10 seconds

between tests.

Maximum allowable variations: The difference between the weight

indication due to the disturbance and the indication without the

disturbance either must not exceed 1 d or the EUT must detect and

act upon a significant fault.

Conduct of the test:

Preconditioning: None required.

Test equipment:

A test generator suitable to reduce the amplitude of the AC

voltage from the mains. The test generator must be adjusted before

connecting the EUT.

Load cell simulator, if applicable.

Condition of EUT:

Normal power supplied and ``on'' for a time period equal to or

greater than the warm-up time specified by the manufacturer.

Adjust the EUT as close to zero indication as practicable prior

to the test.

Test sequence:

Stabilize all factors at nominal reference conditions.

Totalize as indicated above and record the following data:

date and time,

temperature,

relative humidity,

power supply voltage,

test load,

indications,

errors,

functions performance.

Interrupt the power supply to zero voltage for a period equal to

8-10 ms. During interruption observe the effect on the EUT and

record, as appropriate.

Repeat the above 4 additional times making sure that there is a

10 second interval between repetitions. Observe the effect on the

EUT.

Reduce the power supply to 50 percent of nominal voltage for a

period equal to 16-20 ms. During reduction observe the effect on the

EUT and record, as appropriate.

Repeat the above 4 additional times making sure that there is a

10 second interval between repetitions. Observe the effect on the

EUT.

A.3.5 Bursts

Test method: Electrical bursts.

Object of the test: To verify compliance with the provisions in

this manual under conditions where electrical bursts are

superimposed on the mains voltage.

Reference to standard: See Bibliography (5)

Test procedure in brief:

The test consists of subjecting the EUT to bursts of double

exponential wave-form transient voltages. Each spike must have a

rise in time of 5 ns and a half amplitude duration of 50 ns. The

burst length must be 15 ms, the burst period (repetition time

interval) must be 300 ms. This test is conducted during a weighing

operation consisting of:

For belt scales--while totalizing at the maximum flow rate at

least the min (or a time sufficient to complete

the test).

For platform, hanging, and automatic hopper scales--tested with

one small test load or simulated load.

Test severities: Amplitude (peak value) 1000 V.

Number of test cycles: At least 10 positive and 10 negative

randomly phased bursts must be applied at 1000 V.

Maximum allowable variations: The difference between the

indication due to the disturbance and the indication without the

disturbance either must not exceed the values given in section

T.5.5, or the EUT must detect and act upon a significant fault.

Conduct of the test: Refer to the IEC Publication referenced in

Bibliography (5) for detailed test procedures.

Supplementary information to the IEC test procedures:

Test equipment:

A burst generator having an output impedance of 50 ohms.

Test conditions:

The burst generator must be adjusted before connecting the EUT.

The bursts must be coupled to the EUT both on common mode and

differential mode interference.

Condition of EUT: Normal power supplied and ``on'' for a time

period equal to or greater than the warm-up time specified by the

manufacturer.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

Stabilize all factors at nominal reference conditions.

Conduct the test as indicated above and record the following

data:

date and time,

temperature,

relative humidity,

test load,

indication,

errors,

functions performance.

Subject the EUT to at least 10 positive and 10 negative randomly

phased bursts at the 1000 V mode. Observe the effect on the EUT and

record, as appropriate.

Stabilize all factors at nominal reference conditions.

Repeat the test and record the test data as indicated above.

A.3.6 Electrostatic Discharge

Test method: Electrostatic discharge (ESD).

Object of the test: To verify compliance with the provisions of

this manual under conditions of electrostatic discharges.

Reference to standard: See Bibliography (6)

Test procedure in brief:

A capacitor of 150 pF is charged by a suitable DC voltage

source. The capacitor is then discharged through the EUT by

connecting one terminal to ground (chassis) and the other via 150

ohm to surfaces which are normally accessible to the operator. This

test is conducted during a weighing operation consisting of:

For belt scales--while totalizing at the maximum flow rate at

least the min (or a time sufficient to complete

the test).

For platform, hanging, and automatic hopper scales--test with

one small test load or simulated load.

Test severities:

Air Discharge: up to and including 8 kV.

Contact Discharge: up to and including 6 kV.

[[Page 32578]]

Number of test cycles: At least 10 discharges must be applied at

intervals of at least 10 seconds between discharges.

Maximum allowable variations:

The difference between the indication due to the disturbance and

the indication without the disturbance either must not exceed the

values indicated in section T.5.5, or the EUT must detect and act

upon a significant fault.

Conduct of the test: Refer to the IEC Publication mentioned in

Bibliography (4) for detailed test procedures.

Supplementary information to the IEC test procedures

Preconditioning: None required.

Condition of EUT:

The EUT without a ground terminal must be placed on a grounded

plate which projects beyond the EUT by at least 0.1 m on all sides.

The ground connection to the capacitor must be as short as possible.

Normal power supplied and ``on'' for a time period equal to or

greater than the warm-up time specified by the manufacturer. Power

is to be ``on'' for the duration of the test.

The EUT must be operating under standard atmospheric conditions

for testing.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

Stabilize all factors at nominal reference conditions.

Conduct test as indicated above and record and the following

data:

date and time,

temperature,

relative humidity,

power supply voltage,

test load,

indication,

errors,

functions performance.

Approach the EUT with the discharge electrode until discharge

occurs and then remove it before the next discharge. Observe the

effect of the discharge on the EUT and record, as appropriate.

Repeat the above step at least 9 more times, making sure to wait

at least 10 seconds between successive discharges. Observe the

effect on the EUT and record as appropriate.

Stabilize all factors at nominal reference conditions.

Repeat the test and record the test data as indicated above.

A.3.7 Electromagnetic Susceptibility

Test method: Electromagnetic fields (radiated).

Object of the test:

To verify compliance with the provisions in this manual under

conditions of electromagnetic fields.

Reference to standard: See Bibliography (7)

Test procedure in brief:

The EUT is placed in an EMI chamber and tested under normal

atmospheric conditions. This test is first conducted at one load in

a static mode and the frequencies at which susceptibility is evident

are noted. Then tests are conducted at the problem frequencies, if

any, during a weighing operation consisting of:

For belt scales--while totalizing at the maximum flow rate at

least the (or a time

sufficient to complete the test). It is then exposed to

electromagnetic field strengths as specified in the ``Test

severities'' section below.

For platform, hanging, and automatic hopper scales--tested with

one small test load.

The field strength can be generated in various ways:

1. the strip line is used at low frequencies (below 30 MHz or in

some cases 150 MHz) for small EUT's;

2. the long wire is used at low frequencies (below 30 MHz) for

larger EUT's;

3. dipole antennas or antennas with circular polarization placed

1 m from the EUT are used at high frequencies.

Under exposure to electromagnetic fields the EUT is again tested

as indicated above.

Test severities: Frequency range: 26--1000 MHz

Field strength: 3 V/m

Modulation: 80 percent AM, 1 kHz sine wave

Number of test cycles: Conduct test by continuously scanning the

specified frequency range while maintaining the field strength.

Maximum allowable variations: The difference between the

indication due to the disturbance and the indication without the

disturbance either must not exceed the values given in this manual,

or the EUT must detect and act upon a significant fault.

Conduct of the test: Refer to the IEC Publication referenced in

Bibliography (7) for detailed information on test procedures.

Supplementary information to the IEC test procedures.

Test conditions:

The specified field strength must be established prior to the

actual testing (without the EUT in the field). At least 1 m of all

external cables must be included in the exposure by stretching them

horizontally from the EUT.

The field strength must be generated in two orthogonal

polarizations and the frequency range scanned slowly. If antennas

with circular polarization, i.e., log-spiral or helical antennas,

are used to generate the electromagnetic field, a change in the

position of the antennas is not required. When the test is carried

out in a shielded enclosure to comply with international laws

prohibiting interference to radio communications, care needs to be

taken to handle reflections from the walls. Anechoic shielding might

be necessary.

Condition of EUT: Normal power supplied and ``on'' for a time

period equal to or greater than the warm-up time specified by the

manufacturer. Power is to be ``on'' for the duration of the test.

The EUT must be operating under standard atmospheric conditions for

testing.

Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence: Stabilize all factors at nominal reference

conditions.

Conduct the test as indicated above and record the following

data:

date and time,

temperature,

relative humidity,

test load,

indication,

errors,

functions performance.

Following the IEC test procedures, expose the EUT at zero load

to the specified field strengths while slowly scanning the three

indicated frequency ranges.

Observe and record the effect on the EUT.

Repeat the test as indicated above and observe and record the

effect.

Stabilize all factors at nominal reference conditions.

Repeat the test and record the test data as indicated above.

Bibliography

Below are references to Publications of the International

Electrotechnical Commission (IEC), where mention is made in the

tests in Annex A.

1. IEC Publication 68-2-1 (1974): Basic environmental testing

procedures. Part 2: Tests, Test Ad: Cold, for heat dissipating

equipment under test (EUT), with gradual change of temperature.

IEC Publication 68-2-2 (1974): Basic environmental testing

procedures, Part 2: Tests, Test Bd: Dry heat, for heat dissipating

equipment under test (EUT) with gradual change of temperature.

IEC Publication 68-3-1 (1974): Background information, Section

1: Cold and dry heat tests.

2. IEC Publication 68-2-56 (1988): Environmental testing, Part

2: Tests, Test Cb: Damp heat, steady state. Primarily for equipment.

IEC Publication 68-2-28 (1980): Guidance for damp heat tests.

3. IEC Publication 1000-4-11 (1994): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques,

Section 11. Voltage dips, short interruptions and voltage variations

immunity tests. Section 5.2 (Test levels--Voltage variation).

Section 8.2.2 (Execution of the test-voltage variation).

4. IEC Publication 1000-4-11 (1994): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques,

Section 11. Voltage dips, short interruptions and voltage variations

immunity tests. Section 5.1 (Test levels--Voltage dips and short

interruptions. Section 8.2.1 (Execution of the test-voltage dips and

short interruptions) of the maximum transit speed and the range of

operating speeds.

5. IEC Publication 1000-4-4 (1995): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques--

Section 4: Electrical fast transient/burst immunity test. Basic EMC

publication.

6. IEC Publication 1000-4-2 (1995): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques--

Section 2: Electrostatic discharge immunity test. Basic EMC

Publication.

7. IEC Publication 1000-4-3 (1995): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques--

Section 3: Radiated, radio-frequency electromagnetic field immunity

test.

[FR Doc. 97-15659 Filed 6-13-97; 8:45 am]

BILLING CODE 3510-22-P