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

SUMMARY: NMFS amends 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) to establish performance, technical,

operational, maintenance, and testing requirement for motion-

compensated scales that may be required by NMFS to weigh catch at sea.

This rule does not require vessels to weigh catch at sea. Any such

requirements would be imposed by other rulemaking. This action is

intended to promote the objectives of the FMPs.

DATES: Effective March 6, 1998, except Sec. 679.28(b)(2)(iii)(B) which

is not effective until the Office of Management and Budget approves the

information collection requirement contained in that section. NMFS will

publish a document in the Federal Register announcing the effective

date for that section. NMFS will announce in the Federal Register the

dates when NMFS will accept type evaluation documentation under 50 CFR

679.28(b)(1) and when scale inspections under 50 CFR 679.28(b)(2) will

be conducted.

ADDRESSES: 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, DC 20503,

Attn: NOAA Desk Officer and to Sue Salveson, Assistant Regional

Administrator, Sustainable Fisheries 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.

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 at 50 CFR part 679.

On June 16, 1997, NMFS published a proposed rule (PR) proposing to

establish the performance, technical, operational, maintenance, and

testing requirements for motion-compensated scales that may be required

by NMFS to weigh catch at sea (62 FR 32564). Public comment was invited

through July 16, 1997. Ten letters of comment were received.

The Response to Comments section below addresses only comments

about the performance, technical, operational, maintenance, and testing

requirements for scales used to weigh catch at sea. Some of the

comments received on this PR were in response to a different PR that

would require trawl catcher/processors and motherships participating in

the Western Alaska Community Development Quota Program (CDQ) to weigh

catch at sea using such scales (62 FR 43866, August 15, 1997). The end

of the public comment period on that proposed rule was September 29,

1997. NMFS will respond to the following issues in the Response to

Comments section in the preamble to the final rule resulting from that

proposed rule: (1) Which vessels will be required to weigh catch on a

scale, (2) whether scales should be required in particular fisheries or

for particular vessel types, (3) whether additional scale testing is

needed before NMFS requires vessels to use scales, (4) whether other

types of catch-weight estimates could be used if a scale breaks down,

(5) questions about the use of species composition sampling to estimate

the weight of each species in the catch, and (6) the validity of NMFS

cost estimates for scales on certain types of vessels.

This final rule adds a new Sec. 679.28 to 50 CFR part 679, titled

``Equipment and operational requirements for catch weight measurement''

and adds a new appendix A to part 679. Besides setting forth the

equipment, operational, maintenance, and testing requirements for such

scales, Sec. 679.28 sets forth the information that scale manufacturers

must submit to NMFS in order for a scale to be eligible for approval by

NMFS to be used to weigh catch at sea. In addition, Sec. 679.28 sets

forth the responsibilities of vessel owners and operators with respect

to initial after-installation scale inspections and annual

reinspections, and it also sets forth at-sea testing requirements and

recordkeeping and reporting requirements. The new appendix A to part

679 sets forth the performance and technical requirements for type

evaluation and initial and annual reinspections for belt-conveyor

(flow) scales, automatic hopper scales, platform scales, and hanging

scales.

Section 679.28 and appendix A to this part do not impose any

requirement on vessels or processors to weigh catch at sea. Any such

requirement would be imposed by other rulemakings. For example, NMFS

has proposed in a separate rulemaking that trawl catcher/processors and

motherships be required to weigh all CDQ catch and that all processor

vessels, including those using trawl, longline, and pot gear, provide

an observer sampling station which includes a motion-compensated

platform scale (62 FR 43866, August 15, 1997). If the proposal is

adopted, these weighing and scale requirements would be codified in

Sec. 679.32 with other regulations governing monitoring of the CDQ

program. All scales used would have to be approved by NMFS under

Sec. 679.28 and appendix A to this part.

Response to Comments

Comment 1: The proposed at-sea scale requirements are very

different from scale certification requirements for shoreside

processors. Scales in shoreside plants are required to be certified

annually by the Alaska Division of Measurement Standards but are not

required to be tested between annual certifications. Specifically, they

are not required to meet accuracy standards in daily tests. NMFS should

not implement at-sea scale requirements until parallel requirements are

implemented by the State of Alaska for scales used to weigh federally

managed species in shorebased processing plants in Alaska.

Response: Scales in shoreside processing plants are under the

jurisdiction of the State of Alaska Division of Measurement Standards

because the buying and selling of fish is commerce, and the State of

Alaska requires that these fish be weighed on a scale approved under

Alaska Statutes. The State of Alaska determines what constitutes an

approved scale, how often the scale has to be tested, what tests must

be conducted, and what

[[Page 5837]]

accuracy standards must be met. Scales in shoreside plants must meet

significantly more restrictive performance requirements--maximum

permissible errors (MPEs)--and are operated in a less hostile

environment than those at sea.

NMFS believes it is unnecessary to have identical requirements for

scales in the shoreside plants and scales on vessels. The environment

in which the weighing occurs is different, and, therefore, the design

of the land-based versus at-sea scales is different. Once calibrated

and sealed, land-based scales are expected to hold their calibration

over an extended period of time. However, some motion-compensated belt

scales are specifically designed to be recalibrated regularly in order

to weigh accurately. Because the operator must adjust the scale several

times a day, NMFS believes that a daily test of the scale is necessary

to monitor the performance of the scale.

NMFS may re-evaluate the need for daily tests for at-sea scales in

the future if scales with sealed calibration mechanisms are available

or if daily scale test results indicate that fewer tests would provide

sufficient information about the scale's performance.

Comment 2: NMFS should not implement requirements that vessels be

required to weigh catch on a scale evaluated under Sec. 679.28(b) until

NMFS demonstrates that at-sea scales are capable of weighing accurately

on specific vessels or classes of vessels defined by length categories

or processing modes, e.g., catcher/processors that head, gut, and

freeze (H&G).

Response: This rule does not require any vessel to weigh catch at

sea. Such requirements are the subject of other rulemakings. Rather,

this rule establishes performance and technical requirements for scales

used to weigh catch at sea, from platform scales used to weigh

observers' samples to high capacity scales used to weigh total catch.

Questions such as whether at-sea weighing is necessary, which vessels

would be required to weigh catch, and whether back-up methods can be

used when a scale breaks down are being addressed in other rulemakings.

The technical and performance requirements for scales used at sea need

to be issued as soon as possible so that scale manufacturers can

prepare for future scale requirements.

Comment 3: NMFS should use the term ``approved for use'' rather

than ``certified'' to refer to a scale that has met laboratory and

dockside inspection and test requirements to be consistent with the

terms used by weights and measures agencies.

Response: NMFS concurs with the suggestion. This final rule refers

to scales that have met laboratory and initial or annual inspection

requirements as ``approved for use'' rather than ``certified.'' Once a

scale is approved for use, it must also pass daily at-sea scale test

requirements in order to be used to weigh catch at sea.

Comment 4: Testing the scale in a laboratory or on a vessel tied up

to a dock will not verify whether the scale weighs accurately in

motion. These tests can only be performed once the scale has been

purchased and installed on the vessel, successfully evaluated in the

laboratory and by a scale inspector, and used in a commercial fishery.

A scale could pass laboratory and dockside inspection requirements but

fail the at-sea scale tests. Failure of the scale at this point would

be costly to the vessel owner in terms of scale installation and

purchase costs, as well as of loss of time in a commercial fishery.

Response: NMFS is implementing a three-part process for evaluating

whether at-sea scales are meeting NMFS' performance and technical

requirements. This process consists of type evaluation of each model of

scale, dockside inspection of each scale once installed on a vessel and

once a year thereafter, and at-sea testing of each scale. No single

element of the process alone is sufficient to determine whether a scale

is meeting performance and technical requirements.

The laboratory tests are designed to determine whether the model of

scale meets technical and performance standards under a range of

environmental and operating conditions on the vessel, including

temperature, humidity, power fluctuations, short-time power reduction,

power bursts, electrostatic discharge, and electromagnetic

susceptibility. However, the laboratory tests are not designed to test

the scale's performance in motion.

The dockside inspection of each scale will determine, among other

things, whether the scale weighs accurately while in a nearly

stationary position. This evaluation is necessary to identify scales

that are not installed properly or do not meet other technical or

performance requirements before the vessel starts fishing.

The at-sea scale tests will be conducted daily to verify that the

scale is weighing accurately at sea. This is the only test that will be

performed while the scale is in motion. The MPEs are higher in the at-

sea scale tests than in the dockside tests to allow a greater tolerance

for scales tested in motion.

NMFS considered the need for laboratory tests that would verify

whether a scale could weigh accurately in motion and agrees that, if

such tests existed, they would provide valuable information about a

scale's performance. Unfortunately, laboratory tests specifically

designed to test at-sea scales in motion do not exist, and it would be

very costly and time consuming for NMFS to develop laboratory tests

that could accurately reproduce the motion and other environmental

conditions experienced by a vessel.

Although more extensive laboratory tests could provide more

information about the performance of a scale, the at-sea scale tests

would still be the official test of the scale's performance in motion.

It is possible that a scale could pass laboratory and dockside

inspection requirements but fail daily at-sea scale tests. Scale

manufacturers must understand the conditions under which their scale

will be used to accurately specify the performance capabilities of

their scales and to provide the necessary performance guarantees to

their customers. Vessel owners are responsible for proper installation

and maintenance of the scale according to the manufacturer's

instructions.

Comment 5: In rough weather, some vessels may pitch and roll so

much that the fish being conveyed through the factory will slide across

the belt or be lifted off the belt. Laboratory tests would not

determine how the belt scale will function if fish are not in contact

with the weighing plate of the scale. Do NMFS certification tests tell

us if the scale will work if fish are not continually in contact with

the belt itself or are moving against the flow direction of the

conveyor belt because of the extreme motion of a vessel?

Response: Laboratory tests are probably not needed to determine how

a belt scale would function under these circumstances because the scale

is not designed to weigh accurately if fish are sliding across the

scale's conveyor belt or are being lifted off the belt while they are

being weighed. If fish are sliding forward across the scale or are

being lifted off the scale when the vessel pitches, catch weight

probably would be underestimated. If fish are sliding backwards across

the scale, catch weight probably would be overestimated.

The scale is required to be tested once a day by the vessel crew at

a time determined by the crew. NMFS acknowledges that these daily scale

tests cannot identify all weighing problems that will occur between

tests on successive days. However, other

[[Page 5838]]

features of the scale program should minimize this risk. These other

features include the type evaluation, and dockside tests, and the audit

trail that electronically records and stores records of scale

calibrations, adjustments, and observer monitoring.

The vessel operators and scale manufacturers must decide whether a

particular type of scale or model of scale will be able to weigh

accurately under the conditions that will be experienced by the vessel.

If a vessel regularly fishes in circumstances where a belt scale is not

advisable, the owner or operator should consider installing an

automatic hopper scale in which fish are conveyed into the hopper of

the scale, which is a partially enclosed container, and weighed in

batches rather than being weighed as they flow across a scale.

Comment 6: NMFS should require scale manufacturers to post a

performance bond.

Response: NMFS will not require that scale manufacturers post a

performance bond to guarantee that their scales will meet NMFS'

requirements at sea. Arrangements to compensate vessel owners for

problems with the scales should be specified in a contract between the

scale manufacturer and the vessel owner without involvement by NMFS.

Comment 7: Can laboratory tests required by NMFS be conducted at

laboratories in the United States?

Response: Yes, influence factors tests for static temperature

(annex A, A.3.1 to appendix A to part 679), damp heat, steady state

(appendix A, annex A, A.3.2), and power voltage variation (appendix A,

annex A, A.3.3) can be conducted by laboratories accredited under the

National Type Evaluation Program (NTEP). The west coast NTEP laboratory

is located in Sacramento, CA, telephone 916-229-3000. The NTEP

laboratory also can refer scale manufacturers to other laboratories

that have the capability to conduct disturbance tests.

Comment 8: NMFS should allow a combination of NTEP approval on

components and a history of scale use in a shoreside processing plant

in lieu of type evaluation requirements.

Response: NMFS does not agree with this suggestion in its entirety,

but will accept NTEP Certificates of Conformance and test results to be

submitted in partial fulfillment of the type evaluation requirements.

Section 679.28(b)(1)(iv) has been revised accordingly.

The NTEP Certificate of Conformance requires that a component or

device undergo only one or two of the seven laboratory tests

recommended for at-sea scales by our technical advisor (temperature and

power voltage fluctuation). The additional five tests are recommended

for at-sea scales because they represent the type of external factors

present on a vessel that may affect the scale's performance. A history

of use of a similar model of scale in a shoreside processing plant does

not offer NMFS the assurances it needs that the scale is designed to

operate successfully on a vessel.

Comment 9: NMFS should accept International Organization of Legal

Metrology (OIML) Certificates of Conformance for all types of scales

covered by appendix A to part 679, rather than just for belt scales.

Response: NMFS agrees and has revised Sec. 679.28(b)(1)(iv) to

specify OIML certificates and test results for automatic hopper scales,

platform scales, and hanging scales as acceptable verification of test

results. Scale manufacturers who submit NTEP or OIML Certificates of

Conformance must also submit all other information required by NMFS

listed in Sec. 679.28(b)(1)(i) and (b)(1)(ii).

Comment 10: Will NMFS accept an OIML Certificate of Conformance on

a land-based version of the motion-compensated scale?

Response: Yes, NMFS will accept OIML Certificates of Conformance

and test data if they are based on tests of a model of scale without

motion compensation as long as the model of scale that was tested and

the model of scale that will be used to weigh catch at sea differ only

in the elements of the scale that are designed to perform motion

compensation, the size or capacity of the scale, and the software used

by the scale. Section 679.28(b)(1)(ii)(G) was added to the final rule

in order to clarify this allowance.

Comment 11: Vessel owners need an alternative to the weights and

measures inspectors that would be provided through NMFS' cooperative

agreement with the State of Alaska, Division of Measurement Standards.

Alternative weights and measures inspectors are needed in case NMFS

cannot provide scale inspectors when and where they are needed by the

vessel owners. NMFS could specify the qualifications and training

requirements for the inspectors, and the industry could contract

directly with the alternative scale inspectors.

Response: Section 679.28(b)(2)(iii)(B) was added to the final rule

in order to authorize inspectors other than those employed by the State

of Alaska to conduct initial and periodic inspections of at-sea scales.

NMFS will not pay any of the costs associated with these inspections. A

person wishing to conduct scale inspections must be an employee of a

U.S., state, or local weights and measures agency. He or she must be

trained to conduct the inspection by NMFS' authorized scale inspectors

and must notify NMFS in writing that he or she meets the previous two

requirements prior to conducting any inspections. Such person must

provide NMFS with at least 3 days notice that a scale inspection will

be conducted in order to provide NMFS employees with an opportunity to

observe the inspection. This section is not yet effective; OMB must

first approve the collection of information requirements. The section's

effectiveness will be announced by notice in the Federal Register.

Comment 12: NMFS needs to clarify where scale inspections could

occur, because the preamble to the PR says that inspections would occur

in Seattle, WA, or Dutch Harbor, AK, but the regulations do not limit

inspections to these two ports. In addition, NMFS should provide for

scale inspections in Kodiak because these regulations could apply to

vessels in the Gulf of Alaska in the future.

Response: Section 679.28(b)(2)(v) has been added to the final rule

in order to clarify that inspections by inspectors paid for by NMFS

must be conducted only in the Puget Sound area of Washington State and

Dutch Harbor, AK. This restriction is necessary to stay within the

budget NMFS has allocated for the scale inspection program. NMFS will

consider amending these regulations to allow scale inspections in other

ports if the demand exists and the budget can be increased. One

possible option would be to allow inspections in other ports if vessel

owners pay for the cost of travel and transportation of equipment from

Seattle, WA, or Dutch Harbor, AK, to the port in which the scale

inspection is requested.

NMFS also may propose to limit scale inspections to certain months

of the year if necessary to perform all scale inspections within budget

limits.

Comment 13: NMFS should pre-approve scale installation plans.

Response: NMFS will review scale installation plans with vessel

owners and discuss installation, performance, and technical

requirements. However, NMFS cannot approve the vessel owner's plans.

Determination of whether a scale meets NMFS requirements can only be

determined once the scale is installed and in use.

Comment 14: NMFS should give a 1-month grace period for annual

inspections. The purpose of this would be to increase the scheduling

flexibility for both NMFS and vessel owners

[[Page 5839]]

without resulting in a situation where the vessel is required to

undergo the inspection more than once per year.

Response: The final regulations require that the scale be inspected

and tested by an inspector authorized by NMFS when it is first

installed (initial inspection) and one time each year within 12 months

of the date of the most recent inspection. This means that a scale that

passes the inspection requirements on May 1, 1998, would not be

required to pass the inspection requirements again until May 1, 1999.

Because no scale must be inspected more than once in a 12-month period,

a 1-month grace period is not necessary. Vessel owners may schedule

their second inspection for a date less than 12 months from the initial

inspection so that future annual inspections may occur during a more

convenient time of the year. See the response to comment 15 for

additional information.

Comment 15: NMFS should grant a trip-by-trip exemption if an

inspector is not available.

Response: NMFS intends to establish a scale inspection program that

will provide inspectors when they are needed within 10 working days of

the date the request for a scale inspection is received. Vessel owners

are encouraged to plan ahead in order to ensure that they obtain an

annual inspection prior to the deadline.

Comment 16: The proposed MPE of 3 percent for at-sea scale tests is

too high. Scales could and should achieve better than that at sea.

Response: A 3-percent MPE was proposed as a compromise between what

scale manufacturers said they could achieve and what NMFS believed

would be acceptable for fisheries management purposes. NMFS did not

want to propose an MPE so restrictive that it would cause scales to

regularly fail at-sea tests. Tests conducted on a belt conveyor scale

between August 1996 and March 1997 showed that a 1.5-percent MPE could

be met in most cases but that a 3-percent MPE was not exceeded in any

test. NMFS will maintain the MPE for belt and automatic hopper scales

at 3 percent, and may re-evaluate the 3-percent MPE in the future if

at-sea scale test results indicate that better performance can

practically be achieved. See the response to comment 17 about MPEs for

platform and hanging scales.

Comment 17: The MPE for at-sea tests of the platform and hanging

scales should be reduced from 3 percent to 0.5 percent because these

types of scales can meet more restrictive MPEs at sea. In addition,

many of the platform scales will be used to weigh test material for

testing the belt or automatic hopper scales. If the allowable error in

the scale used to weigh test material is 3 percent, then a cumulative

error of 6 percent could be allowed for the belt and automatic hopper

scales.

Response: NMFS agrees and has revised Sec. 678.28(b)(3)

accordingly.

Comment 18: The MPE for belt and automatic hopper scales at initial

and periodic inspections should be 1 percent.

Response: Section 2.2.1.3 (belt scales) and section 3.2.1.2

(automatic hopper scales) of appendix A to part 679 specify that the

MPE for material tests and increasing and decreasing load tests

conducted in a laboratory or on a scale installed on a stationary

vessel is 1 percent. The MPE for at-sea tests of belt and automatic

hopper scales is 3 percent.

Comment 19: NMFS needs to clarify what information is required on

the scale's ``audit trail.''

Response: The audit trail is an electronic and printed record of

changes that are made to the scale or the scale weights by the scale

operator. Appendix A to part 679 requires that when a scale is adjusted

or calibrated, either a security seal must be broken or an audit trail

must be provided. Changes in adjustable components, such as span

(calibration) and automatic zero-setting, that affect the performance

or accuracy of the scale must be recorded on the audit trail.

NMFS has revised the regulations and annex A to appendix A in order

to clarify that the information on the audit trail must be provided in

an electronic form that cannot be changed or erased by the scale

operator, can be printed at any time, and can be cleared by the scale

manufacturer's representative upon direction by NMFS or by an

authorized scale inspector.

NMFS removed the requirement that ``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'' be recorded on

the audit trail. The requirement to record the date and time of each

adjustment will provide sufficient information about the chronological

order of adjustments. NMFS also removed the requirement that the

``source of the change'' be provided on the audit trail. This referred

to the identification of the person making the change which, upon

consultation with our technical advisor and scale manufacturers, NMFS

determined was not meaningful information to require.

If the adjustment recorded on the audit trail is a scale

calibration performed by the scale operator, the audit trail would

record the date and time the calibration procedure was performed, the

name or type of adjustment being made, such as ``span adjustment'' or

``calibration,'' and the initial and final values of the parameter

changed.

The final rule has also been changed to add the requirement that

any information to be provided on the audit trail be described in the

``information about the scale'' submitted to NMFS under

Sec. 679.28(b)(1)(ii)(H) and to add the definition of ``adjustable

component'' to section 5 of appendix A to part 679.

Comment 20: Can the information on the audit trail be printed on a

remote computer that captures the data from the scale?

Response: Yes. Information on the audit trail is required to be

recorded and retained in memory until it is cleared from memory at the

annual inspection. The information is not required to be displayed on

the scale indicator. However, the scale system must include the

capability to print the information on the audit trail at any time upon

request of the observer, the scale inspector, NMFS staff, or an

authorized officer.

Comment 21: Can the printed information required in sections

2.3.1.8, 3.3.1.7, and 4.3.1.5 of appendix A to part 679 be provided by

an auxiliary printer connected to the scale?

Response: The printed information could come from either a printer

that is connected directly to the scale or that is connected through

another computer on the vessel.

Comment 22: The proposed rule would appear to allow the scale

operator to recalibrate the scale every day just prior to the scale

test. This would render the test valueless because a scale could be

operated with as great as 10 percent error for 24 hours and still

satisfy NMFS requirements.

Response: NMFS does not agree with this comment. The scales are

required to be adjusted so that the error is as close as possible to

zero, which means that vessel operators are prohibited from

deliberately adjusting the scale incorrectly. Although scales may be

recalibrated or tested at any time during the day, the audit trail is

designed to record information that will be used to determine whether a

scale had been incorrectly adjusted and then readjusted just prior to

the scale test.

Comment 23: NMFS needs to clarify the difference in requirements

for different uses of platform scales.

Response: Platform scales could be used for two different purposes

on a

[[Page 5840]]

vessel. First, a platform scale could be used as an observer sampling

scale and to verify the weight of fish used to test the belt or

automatic hopper scales on trawl catcher/processors and motherships. In

this case, the scale will not be required to provide printed output of

scale weights because all information from the scale weights will be

recorded by hand on the observer's forms or on the scale test report

form. In addition, the platform scale will not be required to provide

an audit trail of all adjustments to the scale. The purpose of the

audit trail for scales used to weigh total catch is to monitor whether

the scale is being improperly adjusted so that weights are incorrectly

reported. An audit trail is not necessary for a scale used primarily by

the observer or witnessed by the observer during a scale test because

the observer can test the scale immediately prior to use to verify its

accuracy.

Second, a platform scale could be used to weigh total catch. In

this case, the scale would be required to meet all of the performance

and technical requirements specified in Sec. 679.28(b) and section 4 of

appendix A to part 679.

For all uses of a platform scale, the scale is required to meet

type evaluation requirements and to be inspected and approved by an

authorized scale inspector upon initial installation and each year

thereafter. In addition, the vessel owner is required to provide

certified test weights as described in Sec. 679.28(b)(3)(ii)(B) for the

daily scale tests at sea.

Comment 24: In appendix A to part 679, sections 2.3.1.5 and

3.3.1.9, NMFS proposes to require that belt scales and automatic hopper

scales be capable of indicating at least 99,999,999 kilograms so that

the cumulative weight of all catch in a year could be displayed on the

indicator. Scales currently on the market cannot display this many

digits.

Response: NMFS has revised sections 2.3.1.5 and 3.3.1.9 of appendix

A to part 679 to allow the information required on the scale indicator

to be displayed in either kilograms or metric tons. These sections now

read: ``the range of the weight indications and printed values for each

haul or set must be from 0 kg to 999,999 kg and for the cumulative

weight must be from 0 to 99,999 metric tons.'' This revision allows the

cumulative catch of all material weighed on the scale to be displayed

in less space.

NMFS also revised the wording in several other sections of appendix

A to part 679 to make other requirements consistent with the changes in

sections 2.3.1.5 and 3.3.1.9.

Sections 2.3.1.1 and 3.3.1.1 were revised to replace technical

terms with plain English. For example, the first two sentences of

section 2.3.1.1 previously read, ``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.''

Section 2.3.1.1 has been revised to read, ``a belt scale must be

equipped with an indicator capable of displaying both the weight of

fish in each haul or set and the cumulative weight of all fish or other

material weighed on the scale between annual inspections (``the

cumulative weight''); a rate of flow indicator; and a printer.''

Section 3.3.1.1 has been revised similarly.

Sections 2.3.1.3 and 3.3.1.3 have been revised to read, ``the

weight of each haul or set must be indicated in kilograms and the

cumulative weight may be indicated in kilograms or metric tons and

decimal subdivisions.''

Section 2.3.1.6 has been revised to read, ``the means to indicate

the weight of fish in each haul or set must be resettable to zero. The

means to indicate the cumulative weight must not be resettable to zero

without breaking a security means and must be reset only upon direction

by NMFS or an authorized scale inspector.'' Section 3.3.1.10 has been

revised to read, ``the cumulative weight must not be resettable to zero

without breaking a security means and must be reset only upon direction

by NMFS or an authorized scale inspector.''

Comment 25: NMFS should allow limited component exchange for load

cells without requiring that the scale be re-evaluated at a laboratory.

Response: NMFS agrees that metrologically equivalent load cells

from the same or a different manufacturer may be installed into a scale

without requiring that scale to be resubmitted for laboratory tests or

retested by a scale inspector. However, a materials test should be

conducted immediately after replacing the load cell to assure that the

scale is weighing accurately.

Comment 26: NMFS should clarify the definition of a major

modification that would require a scale to be inspected by an

authorized scale inspector between annual inspections.

Response: It would be difficult for NMFS to distinguish between

scale modifications that should require re-inspection versus those that

should not. Therefore, NMFS is requiring only that the scales be

inspected when they are first installed on a vessel and at least one

time per year thereafter. Between annual inspections, NMFS will rely on

the daily scale test requirement to determine whether a scale is

weighing accurately after scale modifications.

Comment 27: For automatic hopper scales, NMFS should allow the

option of having the scale return to zero after weighing each hopper of

fish rather than requiring the scale to print the load and no-load

reference values for each hopper load because this provision is allowed

for automatic hopper scales used in shoreside plants.

Response: NMFS revised section 3.3.1.1 of appendix A to part 679 to

allow this option for automatic hopper scales.

Comment 28: A material test should be used to test both belt scales

and automatic hopper scales at sea. The material used in the test

should be weighed immediately before or after the test to establish its

true weight, regardless of whether this material is fish or an

alternative (such as sand bags).

Response: NMFS agrees and has revised the requirements for at-sea

scale tests in Sec. 679.28(b)(3) accordingly.

Comment 29: The overload protection requirement should be increased

from 150 percent to 200 percent because of the extra stress on scales

used at sea.

Response: Increasing the overload protection requirement for the

scales is unnecessary. Loads in excess of 150 percent of the capacity

of the scale should not normally accumulate on the scale. In the event

that they do, the scale should be recalibrated before it is used to

weigh more fish.

Comment 30: Stating specific sizes of scales under the definition

of a platform scale may unintentionally favor specific scale

manufacturers.

Response: Scale dimensions were included as examples representative

of some scales in use, but were not intended to specify designs of any

particular manufacturer, nor to preclude the design of a manufacturer.

NMFS has removed this particular sentence from the definition.

Comment 31: Can a ``security means'' be a password needed to enter

the indicator that will be known only to the inspector and that can be

changed only by the inspector?

Response: This comment refers to the requirement in sections

2.3.1.11, 3.3.1.12, and 4.3.1.8 of appendix A to part 679 which states

that ``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, unless a record of the

adjustment is made on the audit trail

[[Page 5841]]

* * *.'' Because it would be impossible for NMFS to determine if the

password needed to make a scale adjustment was known to the vessel

crew, a password would not be considered a ``security means.''

Therefore, any feature of the scale that could be changed by entering a

password prior to making the change is required to be recorded on the

audit trail. NMFS also revised the definition of ``security seals or

means'' in section 5.0 of appendix A to part 679 in order to be

consistent with this response to comment 31. In the PR, the definition

read, ``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.'' The definition now

reads ``a physical seal such as a lead and wire seal that must be

broken in order to change the operating or performance characteristics

of the scale.''

Comment 32: The conveyors on belt scales are run by electricity

rather than hydraulics, which is used for other conveyors on the

vessel. Therefore, the scales will be less robust than regular conveyor

belts. The electricity-driven belts will pose both safety and breakdown

problems. In addition, scales will be exposed to more sand and grit on

vessels that head, gut, and freeze groundfish than they would on

vessels fishing for pollock, making durability a greater concern.

Scales should not be required on H&G vessels until hydraulically

operated belt scales are available.

Response: NMFS is setting the performance and technical standards

for scales, specifying the fisheries in which scales are required, and

will monitor the use of scales in these fisheries. NMFS cannot

guarantee that scales will be able to operate on all fishing vessels

under all sea conditions. It is the responsibility of vessel owners who

wish to participate in these fisheries and of the scale manufacturers

to make sure that they have installed a scale that is capable of

meeting NMFS' standards. The decision of how a scale or a component of

a scale is powered on a vessel should be made by the scale

manufacturers and the vessel operators.

Comment 33: Fish should be used in the initial evaluation of the

scale conducted by the scale inspector.

Response: NMFS agrees that it is most desirable to use the same

material that will be weighed by the scale in material tests of the

scale. However, it would be very difficult to make fish available for

scale tests that are most likely to occur outside commercial fishing

seasons and in ports far from where the fish are harvested. It is also

very difficult and expensive to require inspectors to conduct scale

tests on a vessel after it starts fishing. Therefore, NMFS believes

that the only option will be to conduct the material tests in the

laboratory and at dockside with an alternative material that simulates

the flow of fish as much as possible.

Comment 34: Section 2.2.2 of appendix A to part 679 specifies a

minimum flow rate for belt scales. What is required of the scale if it

is weighing below the minimum flow rate?

Response: Section 2.2.2 requires that the manufacturer specify the

minimum flow rate for the scale and that the scale 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. NMFS is not

requiring that the scale stop operating if the alarm indicates that the

scale is operating below the minimum flow rate. However, the scale

operator should correct the situation because the scale is not being

operated according to the manufacturer's specifications.

Comment 35: How long must the zero load test required in section

2.2.1.2 of appendix A to part 679 be performed?

Response: Section 2.4.2.2 of appendix A to part 679 requires that

the zero load test be conducted for a time equal to that required to

deliver the minimum totalized load, which will depend on the capacity

and belt speed of the individual scale.

Changes From the Proposed Rule

In addition to the changes discussed in the preceding responses to

comments and editorial corrections and minor changes for grammar,

consistency of word usage, and clarity, NMFS has made the following

changes from the proposed rule:

1. NMFS added the following sentence to Sec. 679.28(b)(2)(iv) to

more clearly state the responsibility of the vessel owner in providing

advance notice of the need for a scale inspection: ``[v]essel owners

must request a scale inspection at least 10 working days in advance of

the requested inspection by contacting an authorized scale inspector at

the address indicated on the list of authorized inspectors.''

2. NMFS added the requirement in Sec. 679.28(b)(3)(ii)(B) that the

weight of each test weight must be certified by a National Institute of

Standards and Technology approved metrology laboratory and that a copy

of the laboratory certification documents be maintained on board the

vessel at all times while the scale is required. This requirement is

necessary in order to accurately determine the weight of the test

weights which will be used to calibrate and test scales at sea.

3. NMFS revised Sec. 679.28(b)(2)(vii) to require that the vessel

owner maintain a copy of the scale inspection test report form on the

vessel rather than submit a copy to NMFS. NMFS will receive a copy of

this report form from the scale inspectors.

4. NMFS revised Sec. 679.28(b)(3), (b)(4), and (b)(5) to clarify

that both the vessel owner and the vessel operator are responsible for

ensuring that the daily scale tests are conducted, that adjustments

made to the scale bring the performance errors as close as practicable

to a zero value, and that the required printed reports are provided.

5. NMFS added Sec. 679.28(b)(5)(i) to clarify that scale weights

may not be adjusted to account for the perceived weight of water, mud,

dirt, or other non-fish material. The scale must display, record, and

print the weight of the material being weighed. Sections 2.3.1.13 and

3.3.1.16 of appendix A to part 679, titled ``Adjustments to Scale

Weights,'' were added to read: ``The indicators and printer must be

designed so that the scale operator cannot change or adjust the

indicated and printed weight values.''

6. NMFS added Sec. 679.28(b)(6) to require that the observer be

able to see the product on the scale and the scale indications at the

same time. This section prevents the scale indicator, which displays

the scale weights, from being installed somewhere on the vessel where

it could not be watched as fish were being weighed.

7. NMFS revised section 2.2.1.2 of appendix A to part 679 in order

to clarify its meaning. The requirement in the PR was that ``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).'' NMFS revised the last part of this sentence to read `` +0.1

percent of the value of the minimum totalized load or 1 scale division

(d), whichever is greater.''

8. NMFS revised the last sentence of sections 2.2.1 and 3.2.1 of

appendix A to part 679 in order to be consistent with

Sec. 679.28(b)(2)(i) which states that scale inspections will be

conducted on a vessel tied up at a dock. In the PR, sections 2.2.1 and

3.2.1 of appendix A to part 679 read, ``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.'' NMFS removed ``or anchored near shore.''

9. NMFS revised the requirements for the information from the

scales used to weigh total catch that must be printed each day

(sections 2.3.1.8, and 3.3.1.7 of

[[Page 5842]]

appendix A to part 679). These revisions added the requirements to

print vessel name, the value of the cumulative catch recorded on the

totalizer, and the date and time the information is printed. The

following information is required to be printed each day:

i. The vessel name;

ii. The Federal fisheries or processor permit number of the vessel;

iii. The haul or set number;

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

catch from the haul or set started;

v. Month, day, year, and time (to the nearest minute) weighing

catch from the haul or set ended;

vi. The total weight of catch in each haul or set;

vii. The total cumulative weight of all fish or other material

weighed on the scale; and

viii. The date and time the information is printed.

10. NMFS added a sentence in section 2.2.1.1 c. of annex A to

appendix A to part 679 in order to change the temperature effect at

zero flow rate from 10 deg. C to 10 deg. C 0.2 deg. C.

Following is an example of how the information required to be

printed each day could be presented for the first day that weighing on

the scale occurs:

Vessel Name: ______________________________ Federal Permit #:

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

Time

-------------------------- Haul or set

Haul or set number Date Weighing Weighing weight (kg)

started stopped

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

1........................................................... 1/1/98 0200 0500 50,000

2........................................................... 1/1/98 0600 0900 50,000

3........................................................... 1/1/98 1600 1900 50,000

Cumulative weight........................................... 1/1/98 N/A N/A 150,000

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

Date and time information printed: 1/1/98, 2100 hrs.

Signature of vessel operator:________________________________________

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

10. In section 2.3.4 of appendix A to part 679, the value of the

scale division (d) was added to the list of marking requirements. In

section 3.3.6, the accuracy class and the value of the scale division

(d) were added to the list of marking requirements.

11. Section 4.2.1 of appendix A to part 679 was revised to clarify

and correct the sections referring to MPEs in type evaluation and

initial and periodic inspections. Table 1 was also revised to delete

the last column of MPEs for ``in-service.'' In-service refers to the

time when the scale is in use at sea, and this MPE is already specified

in Sec. 679.28(b)(3). Table 2 was added to section 4.2.2 of appendix A

to part 679 to define the accuracy classes referred to in table 1 to

appendix A.

12. In section 4.2.3 of appendix A to part 679, two typographical

errors were corrected. ``Class III scale 10 d'' should have read,

``Class IIII scale 10d.'' The weights and measures industry uses

``IIII'' rather than the Roman numeral IV to refer to a class four

scale.

13. The word ``sealable'' was deleted from the definition of

``event logger'' because the parameters being recorded by the event

logger are parameters that cannot be sealed. The definition also was

revised to make it consistent with the changes made to the audit trail

described in the response to comment 19.

Classification

This final rule has been determined to be not significant for

purposes of E.O. 12866.

When this rule was proposed, 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 it would not have a significant economic impact on a substantial

number of small entities. The rationale for this determination appeared

in the preamble to the proposed rule. NMFS received one comment

regarding this certification. However, the comment was in reference to

a different proposed rule which would require trawl catcher/ processors

and motherships participating in the CDQ fisheries to use a scale

approved by NMFS. NMFS will respond to this comment in the comment

section of the relevant rulemaking. No comments were received regarding

the forms for the certification. Accordingly, no regulatory flexibility

analysis was prepared.

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.

This rule contains collection-of-information requirements subject

to the Paperwork Reduction Act. A request has been submitted to OMB for

approval of a requirement that inspectors from agencies other than an

agency designated by NMFS submit written verification that they have

completed training requirements prior to conducting a scale inspection.

The public reporting burden for this proposed requirement is estimated

to average 30 minutes per response. Inspectors from agencies other than

the weights and measures agency designated by NMFS to perform scale

inspections on behalf of NMFS must notify the Regional Administrator of

the date, time, and location of the scale inspection at least 3 working

days before the inspection is conducted. The public reporting burden

for this requirement is estimated to average 2 minutes per notice.

Public comment is sought regarding: Whether this 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.

The other collections of information in this rule have been

approved by the Office of Management and Budget, OMB control number

0648-0330. 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

maintain a copy of the scale certification document issued by a scale

inspector

[[Page 5843]]

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; (4) vessel operators must maintain printed output from the

scale; and (5) vessel operators must print information from the scale's

audit trail once per year. The public reporting burden for this

collection of information is estimated to average 176 hours per

response for the type evaluation certification documents, 1 minute per

response to maintain the scale certification on the vessel, 45 minutes

per response for the at-sea scale tests, 5 minutes per response for the

printed output from the scale, and 3 minutes per response for the

printed audit trail. 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).

List of Subjects in 50 CFR Part 679

Alaska, Fisheries, Reporting and recordkeeping requirements.

Dated: January 23, 1998.

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 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.

2. 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 NMFS

approval of scales used to weigh catch at sea and other requirements

relating to such scales. This section does not require any vessel to

weigh catch at sea. Such requirements appear elsewhere in this part.

(b) Scales used to weigh catch at sea. In order to be approved by

NMFS a scale used to weigh catch at sea must meet the type evaluation

requirements set forth in paragraph (b)(1) of this section and the

initial inspection and annual reinspection requirements set forth in

paragraph (b)(2) of this section. Once a scale is installed on a vessel

and approved by NMFS for use to weigh catch at sea, it must be

reinspected annually and must be tested daily and meet the maximum

permissible error (MPE) requirements described in paragraph (b)(3) of

this section.

(1) List of scales eligible for approval. The model of scale must

be included on the Regional Administrator's list of scales eligible to

be approved for weighing catch at sea before an inspector will schedule

or conduct a scale inspection under paragraph (b)(2) of this section. A

scale will be included on the list when the Regional Administrator

receives the information specified in paragraphs (b)(1)(i) through (iv)

of this section. This information identifies and describes the scale,

sets forth contact information regarding the manufacturer, and sets

forth the results of required type evaluations and testing. Type

evaluation and testing must be conducted by a laboratory accredited by

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

(i) Information about the scale. (A) Name of scale manufacturer.

(B) Name of manufacturer's representative.

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

representative.

(D) Telephone and fax number of manufacturer's representative.

(E) Model and serial number of the scale tested.

(F) A written description of the scale and diagrams explaining how

the scale operates and how it compensates for motion.

(G) A list of the model numbers of all scales for which type

evaluation results are applicable, identifying the differences between

the model evaluated in the laboratory and other models listed. The

scales may differ only in the elements of the scale that perform motion

compensation, the size or capacity of the scale, and the software used

by the scale.

(H) A list of types of scale adjustments that will be recorded on

the audit trail, including the name of the adjustment as it will appear

on the audit trail, and a written description of the adjustment.

(ii) Information about the laboratory. (A) Name of laboratory.

(B) Mailing address of laboratory.

(C) Telephone and fax number of laboratory's representative.

(D) Name and address of government agency accrediting the

laboratory.

(E) Name and signature of person responsible for evaluation of the

scale and the date of signature.

(iii) Checklist. A completed checklist indicating that all

applicable technical and performance standards in appendix A to this

part and the laboratory tests in the annex to appendix A to this part

have been met.

(iv) Verification of test results. Verification that a scale meets

the laboratory evaluation and testing requirements in appendix A of

this part and each of the influence quantity and disturbance tests as

specified in the annex to appendix A to this part:

(A) Test results and data on forms supplied by NMFS;

(B) National Type Evaluation Program (NTEP) Certificates of

Conformance, test results and data for a component of a scale or for

the entire device. NTEP Certificates of Conformance, test results, and

data may be submitted only in lieu of the specific influence factor

tests conducted to obtain the NTEP Certificates of Conformance.

Additional information must be submitted to verify compliance with the

laboratory tests that are not performed under the NTEP; and/or

(C) International Organization of Legal Metrology (OIML)

Certificates of Conformance, test results and data.

(2) Inspection of at-sea scales--(i) What is an inspection? An

inspection is a visual assessment and test of a scale after it is

installed on the vessel and while the vessel is tied up at a dock and

not under power at sea to determine if the scale meets all of the

applicable performance and technical requirements in paragraph (b)(2)

of this section and in appendix A to this part. A scale will be

approved by the inspector if it meets all of the applicable performance

and technical requirements in paragraph (b)(2) of this section and

appendix A to this part.

(ii) How often must a scale be inspected? Each scale must be

inspected and approved before the vessel may participate in any fishery

requiring the weighing of catch at sea with an approved scale. Each

scale must be reinspected within 12 months of the date of the most

recent inspection.

(iii) Who may perform scale inspections? Scales must be inspected

by a scale inspector authorized by NMFS. A list of scale inspectors

authorized by NMFS is available from the Regional Administrator upon

request. NMFS authorizes two types of scale inspectors:

[[Page 5844]]

(A) Inspectors from an agency designated by NMFS. Inspectors

employed by a weights and measures agency designated by NMFS to perform

scale inspections on behalf of NMFS. Scale inspections by such

inspectors are paid for by NMFS.

(B) Inspectors from other agencies. Inspectors employed by a U.S.,

state, or local weights and measures agency other than the weights and

measures agency designated by NMFS and meeting the following

requirements:

(1) The inspector successfully completes training conducted by a

scale inspector from the weights and measures agency designated by NMFS

to perform scale inspections on behalf of NMFS. The training consists

of observing a scale inspection conducted by a scale inspector

designated by NMFS and conducting an inspection under the supervision

of a scale inspector designated by NMFS. The inspector must obtain this

training for each type of scale inspected.

(2) The inspector notifies NMFS in writing that he/she meets the

requirements of this paragraph (b)(2)(iii)(B) prior to conducting any

inspections.

(3) Inspectors from agencies other than the weights and measures

agency designated by NMFS to perform scale inspections on behalf of

NMFS must notify the Regional Administrator of the date, time, and

location of the scale inspection at least 3 working days before the

inspection is conducted so that NMFS staff may have the opportunity to

observe the inspection.

(iv) How does a vessel owner arrange for a scale inspection? The

time and place of the inspection may be arranged by contacting the

authorized scale inspectors. Vessel owners must request a scale

inspection at least 10 working days in advance of the requested

inspection by contacting an authorized scale inspector at the address

indicated on the list of authorized inspectors.

(v) Where will scale inspections be conducted? Scale inspections by

inspectors paid by NMFS will be conducted on vessels tied up at docks

in Dutch Harbor, Alaska, and in the Puget Sound area of Washington

State.

(vi) Responsibilities of the vessel owner during a scale

inspection. After the vessel owner has installed a model of scale that

is on the Regional Administrator's list of scales eligible to be

approved for weighing catch at sea, the vessel owner must:

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

inspector authorized by the Regional Administrator.

(B) Provide a copy of the scale manual supplied by the scale

manufacturer to the inspector at the beginning of the inspection.

(C) 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.

(D) Apply test weights to the scale or convey test materials across

the scale, if requested by the scale inspector.

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

and testing.

(vii) Scale inspection report. A scale is approved for use when the

scale inspector completes and signs a scale inspection report form

verifying that the scale meets all of the requirements specified in

this paragraph (b)(2) and appendix A to this part. Inspectors must use

the scale inspection report form supplied by the weights and measures

agency designated by NMFS to perform scale inspections on behalf of

NMFS. The scale inspector must provide the original of this inspection

report form to the vessel owner and a copy to NMFS. NMFS will maintain

a list of all scales for which the inspection report form has been

received and that are approved for use. The vessel owner is not

required to submit the scale inspection report form to NMFS. However,

the vessel owner must maintain a copy of the report form on board the

vessel at all times when the processor or vessel is required to use a

scale approved under this section. The scale inspection report form

must be made available to the observer, NMFS personnel or an authorized

officer, upon request. When in use, scales for which a scale inspection

form has been completed and signed must also meet requirements

described in paragraphs (b)(3) through (b)(6) of this section.

(3) At-sea scale tests. The vessel owner must ensure that the

vessel operator tests each scale or scale system used to weigh total

catch one time during each 24-hour period in which fish are weighed on

the scale to verify that the scale meets the MPEs specified in this

paragraph (b)(3).

(i) Belt scales and automatic hopper scales. (A) The MPE in the

daily at-sea scale tests is plus or minus 3 percent of the known weight

of the test material.

(B) Test procedure. A material test must be conducted by weighing

at least 400 kg of fish or an alternative material supplied by the

scale manufacturer on the scale under test. The known weight of the

test material must be determined by weighing it on a platform scale

approved for use under paragraph (b)(7) of this section.

(ii) Platform and hanging scales--(A) Maximum Permissible Error.

The MPE for platform and hanging scales is plus or minus 0.5 percent of

the known weight of the test material.

(B) Test weights. Each test weight must have its weight stamped on

or otherwise permanently affixed to it. The weight of each test weight

must be certified by a National Institute of Standards and Technology

approved metrology laboratory. A copy of the laboratory certification

documents must be maintained on board the vessel at all times while the

scale is required. The amount of test weights that must be provided by

the vessel owner is specified in paragraphs (b)(3)(ii)(B)(1) and

(b)(3)(ii)(B)(2) of this section.

(1) Platform scales used as observer sampling scales or to

determine the known weight of test materials. Any combination of test

weights that will allow the scale to be tested at 10 kg, 25 kg, and 50

kg.

(2) Scales used to weigh total catch. Test weights equal to the

largest amount of fish that will be weighed on the scale in one

weighment.

(iii) Requirements for all scale tests. (A) Notify the observer at

least 15 minutes before the time that the test will be conducted, and

conduct the test while the observer is present.

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

weights on or across the scale and recording the following information

on the at-sea scale test report form:

(1) Vessel name;

(2) Month, day, and year of test;

(3) Time test started to the nearest minute;

(4) Known weight of test material or test weights;

(5) Weight of test material or test weights recorded by scale;

(6) 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; and

(7) Sea conditions at the time of the scale test.

(C) 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.

[[Page 5845]]

(4) Scale maintenance. The vessel owner must ensure that the vessel

operator maintains the scale in proper operating condition throughout

its use; that adjustments made to the scale are made so as to bring the

performance errors as close as practicable to a zero value; and that no

adjustment is made that will cause the scale to weigh fish

inaccurately.

(5) Printed reports from the scale. The vessel owner must ensure

that the vessel operator provides the printed reports required by this

paragraph. Printed reports from the scale must be maintained on board

the vessel until the end of the 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 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 and cumulative 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 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 must

not be adjusted by the scale operator to account for the perceived

weight of water, mud, debris, or other materials. The information that

must be printed is described in Sections 2.3.1.8, 3.3.1.7, and 4.3.1.5

of appendix A to this part.

(ii) Printed report from the audit trail. The printed report must

include the information specified in sections 2.3.1.8, 3.3.1.7, and

4.3.1.8 of appendix A to this part. The printed report must be provided

to the authorized scale inspector at each scale inspection and must

also be printed at any time upon request of the observer, the scale

inspector, NMFS staff, or an authorized officer.

(6) Scale installation requirements. The observer must be able to

see the product on the scale and the scale indications at the same

time.

(7) Platform scales used as observer sampling scales or to

determine the known weight of test materials. Platform scales used only

as observer sampling scales or to determine the known weight of fish

for a material test of another scale are required to meet all of the

requirements of paragraph (b) of this section and appendix A to this

part except sections 4.3.1 and 4.3.1.5 of appendix A to this part

(printer) or section 4.3.1.8 (audit trail) of appendix A to this part.

3. Appendix A to part 679 is added immediately following subpart F

of part 679, before the figures and tables, to read as follows:

Appendix A to Subpart F of Part 679--Performance and Technical

Requirements for Scales Used To Weigh Catch at Sea in the Groundfish

Fisheries Off Alaska

Table of Contents

1. Introduction

2. Belt Scales

2.1 Applicability

2.2 Performance Requirements

2.2.1 Maximum Permissible Errors

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 (min)

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 and Non-resettable Values

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

2.3.1.12 Audit Trail

2.3.1.13 Adjustments to Scale Weights

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 Annual Scale Inspections

2.4.3.1 Zero-Load Tests

2.4.3.2 Material Tests

3. Automatic Hopper Scales

3.1 Applicability

3.2 Performance Requirements

3.2.1 Maximum Permissible Errors

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

3.2.4.1.1 Operating 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 Audit Trail

3.3.1.14 Zero-Load Adjustment

3.3.1.14.1 Manual

3.3.1.14.2 Semi-automatic

3.3.1.15 Damping Means

3.3.1.16 Adjustments to Scale Weights

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 Annual Scale Inspections

4. Platform Scales and Hanging Scales

4.1 Applicability

4.2 Performance Requirements

4.2.1 Maximum Permissible Errors

4.2.1.1 Laboratory Tests

4.2.1.2 Increasing and Decreasing Load and Shift Tests

4.2.2 Accuracy Classes

4.2.3 Minimum Load

4.2.4 Influence Quantities

4.2.4.1 Temperature

4.2.4.1.1 Operating Temperature

4.2.4.2 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

4.3.1.9.1 Manual

4.3.1.9.2 Semi-automatic

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

[[Page 5846]]

4.4.2.2 Performance Tests

4.4.3 Annual Scale Inspections

5. Definitions

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

Tests

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

A.4 Bibliography

1. Introduction

(a) This appendix to part 679 contains the performance and

technical requirements for scales to be approved by NMFS for use to

weigh, at sea, catch from the groundfish fisheries off Alaska. The

performance and technical requirements in this document have not

been reviewed or endorsed by the National Conference on Weights and

Measures. Regulations implementing the requirements of this appendix

and additional requirements for and with respect to scales used to

weigh catch at sea are found at 50 CFR 679.28(b).

(b) Revisions, amendments, or additions to this appendix may be

made after notice and opportunity for public comments. Send requests

for revisions, amendments, or additions to the Sustainable Fisheries

Division, Alaska Region, NMFS, P.O. Box 21668, Juneau, AK 99802.

(c) Types of Scales Covered by Appendix--This appendix contains

performance and technical requirements for belt, automatic hopper,

platform, and hanging scales.

(d) Testing and Approval of Scales Used to Weigh Catch at Sea--

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

categories of performance and technical requirements: (1) Type

evaluation; (2) initial inspection after installation while the

vessel is tied up at a dock and is not under power at sea; (3)

annual reinspection while the vessel is tied up at a dock and is not

under power at sea; and (4) daily at-sea tests of the scale's

accuracy. This appendix contains only the performance and technical

requirements for type evaluation and initial and annual

reinspections by an authorized scale inspector.

2. 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.

For laboratory tests of a scale and initial inspections and annual

reinspections of an installed scale when the vessel is tied up at a

dock and is not under power at sea, the following maximum

permissible errors (MPEs) are specified:

2.2.1.1 Laboratory Tests. See annex A to this appendix A for

procedures for disturbance tests and influence factors.

a. Disturbances. 0.18 percent of the weight of the

load totalized.

b. Influence Factors. 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 0.2 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. For zero load tests conducted in a

laboratory or on a scale installed on a vessel and conducted when

the vessel is tied up at a dock and not under power at sea,

0.1 percent of the value of the minimum totalized load

or 1 scale division (d), whichever is greater.

2.2.1.3 Material Tests. For material tests conducted in a

laboratory or on a scale installed on a vessel and conducted when

the vessel is tied up at a dock and not under power at sea,

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 per hour

(kg/hr) 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. Two 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 scale's 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

scale's descriptive markings.

2.3.1 Technical Requirements.

2.3.1 Indicators and Printers.

2.3.1.1 General. A belt scale must be equipped with an

indicator capable of displaying both the weight of fish in each haul

or set and the cumulative weight of all fish or other material

weighed on the scale between annual inspections (``the cumulative

weight''), a rate of flow indicator, and a printer. The indications

and printed representations must be clear, definite, accurate, and

easily read under all 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 of each haul or set must be indicated

in kilograms, and the cumulative weight must be indicated in either

kilograms or metric tons and decimal subdivisions.

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 range of the weight

indications and printed values for each haul or set must be from 0

kg to 999,999 kg and for the cumulative weight must be from 0 to

99,999 metric tons.

2.3.1.6 Resettable and Non-resettable Values. The means to

indicate the weight of fish in each haul or set must be resettable

to zero. The means to indicate the cumulative weight must not be

resettable to zero without breaking a security means and must be

reset only upon direction of NMFS or an authorized scale inspector.

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 catch weight:

i. The vessel name;

ii. The Federal fisheries or processor permit number of the

vessel;

iii. The haul or set number;

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

weighing catch from the haul or set started;

v. The month, day, year, and time (to the nearest minute)

weighing catch from the haul or set ended;

vi. The total weight of catch in each haul or set;

vii. The total cumulative weight of all fish or other material

weighed on the scale; and

viii. The date and time the information is printed.

b. For the audit trail:

i. The vessel name;

ii. The Federal fisheries or processor permit number of the

vessel;

iii. The date and time (to the nearest minute) that the

adjustment was made;

iv. The name or type of adjustment being made; and

v. The initial and final values of the parameter being changed.

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 weight of fish in each

haul or set for which a printed record has not yet been made, the

cumulative weight, and the information on the audit trail.

2.3.1.11 Adjustable Components. An adjustable component that

when adjusted

[[Page 5847]]

affects the performance or accuracy of the scale must be held

securely in position and must not be capable of adjustment without

breaking a security means unless a record of the adjustment is made

on the audit trail described in 2.3.1.12.

2.3.1.12 Audit Trail. An audit trail in the form of an event

logger must be provided to document changes made using adjustable

components. The following information must be provided in an

electronic form that cannot be changed or erased by the scale

operator, can be printed at any time, and can be cleared by the

scale manufacturer's representative upon direction by NMFS or by an

authorized scale inspector:

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

b. The name or type of adjustment being made; and

c. The initial and final values of the parameter being changed.

2.3.1.13 Adjustments to Scale Weights. The indicators and

printer must be designed so that the scale operator cannot change or

adjust the indicated and printed weight values.

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 does not affect the metrological characteristics of the

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 MPEs. 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 information 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--

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. Value of a scale division (d);

h. Belt speed;

i. Weigh length;

j. Maximum capacity (Max);

k. Temperature range (if applicable); and

l. 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 Annual 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. 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. For laboratory tests of a

scale and initial inspection and annual reinspections of an

installed scale when the vessel is tied up at a dock and is not

under power at sea, the following MPEs are specified:

3.2.1.1 Laboratory Tests. See annex A to appendix A for

procedures for disturbance test and influence factors.

a. Disturbances. Significant fault (sf) (scale

division).

b. Influence Factors. 1 percent of test load.

3.2.1.2 Increasing and Decreasing Load Tests. For increasing

and decreasing load tests conducted in a laboratory or on a scale

installed on a vessel tied up at a dock and not under power at sea,

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 scale's 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 scale's

descriptive markings.

3.3 Technical Requirements.

3.3.1 Indicators and Printers.

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

indicator and printer that indicates and prints the weight of each

load and a no-load reference value; and a printer that prints the

total weight of fish in each haul or set and the total cumulative

weight of all fish and other material weighed on the scale between

annual inspections (``the cumulative weight''). The indications and

printed information must be clear, definite, accurate, and easily

read under all conditions of normal operation of the hopper scale.

b. A no-load reference value may be a positive or negative value

in terms of scale divisions or zero. When the no-load reference

value is zero, the scale must return to a zero indication (within

0.5 scale division) when the load receptor (hopper) is

empty following the discharge of all loads, without the intervention

of either automatic or manual means.

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 of each haul or set must be indicated

in kilograms, and the cumulative weight must be indicated in either

kilograms or metric tons and decimal subdivisions.

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

[[Page 5848]]

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 catch weight:

i. The vessel name;

ii. The Federal fisheries or processor permit number of the

vessel;

iii. The haul or set number;

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

weighing catch from the haul or set started;

v. The month, day, year, and time (to the nearest minute)

weighing catch from the haul or set ended;

vi. The total weight of catch in each haul or set;

vii. The total cumulative weight of all fish or other material

weighed on the scale; and

viii. The date and time the information is printed.

b. For the audit trail:

i. The vessel name;

ii. The Federal fisheries or processor permit number of the

vessel;

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

iv. The name or type of adjustment being made; and

v. The initial and final values of the parameter being changed.

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 they will not tend to become

obliterated or illegible.

3.3.1.9 Range of Indication. The range of the weight

indications and printed values for each haul or set must be from 0

kg to 999,999 kg and for the cumulative weight must be from 0 to

99,999 metric tons.

3.3.1.10 Non-Resettable Values. The cumulative weight must not

be resettable to zero without breaking a security means and must be

reset only upon direction by NMFS or by an authorized scale

inspector.

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

must be provided to retain in a memory the weight of fish in each

haul or set for which a printed record has not yet been made, the

cumulative weight, and the information on the audit trail described

in 3.3.1.13.

3.3.1.12 Adjustable Components. An adjustable component that,

when adjusted, affects the performance or accuracy of the scale must

not be capable of adjustment without breaking a security means,

unless a record of the adjustment is made on the audit trail

described in 3.3.1.13.

3.3.1.13 Audit Trail. An audit trail in the form of an event

logger must be provided to document changes made using adjustable

components. The following information must be provided in an

electronic form that cannot be changed or erased by the scale

operator, can be printed at any time, and can be cleared by the

scale manufacturer's representative upon direction of NMFS or by an

authorized scale inspector:

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

b. The name or type of adjustment being made; and

c. The initial and final values of the parameter being changed.

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

with a manual or semi-automatic means that can be used to adjust the

zero-load balance or no-load reference value.

3.3.1.14.1 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.

3.3.1.14.2 Semi-Automatic. A semi-automatic means must be

operable only when the indication is stable within 1

scale division and cannot be operated during a weighing cycle

(operation).

3.3.1.15 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.

3.3.1.16 Adjustments to Scale Weights. The indicators and

printer must be designed so that the scale operator cannot change or

adjust the indicated and printed weight values.

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; and

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

indicated to the operator and is 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 does not affect the metrological

characteristics of the 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 MPEs. 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 information 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); and

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; and

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 Annual 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. Platform Scales and Hanging Scales

4.1 Applicability. The requirements in this section apply to

platform and hanging scales used to weigh total catch. Platform

scales used only as observer sampling scales or to determine the

known weight of fish for a material test of another scale are not

required to have a printer under sections 4.3.1 and 4.3.1.5 or an

audit trail under section 4.3.1.8.

4.2 Performance Requirements.

4.2.1 Maximum Permissible Errors. For laboratory tests of a

scale and initial inspection and annual reinspections of an

installed scale while the vessel is tied up at a dock and is not

under power at sea, the following MPEs are specified:

4.2.1.1 Laboratory Tests. See annex A to this appendix A for

procedures for disturbance tests and influence factors.

[[Page 5849]]

a. Disturbances. Significant fault (1 scale

division); and

b. Influence Factors. See Table 1 in section 4.2.1.2.

4.2.1.2 Increasing and Decreasing Load and Shift Tests.

Increasing and decreasing load and shift tests conducted in a

laboratory or on a scale installed on a vessel while the vessel is

tied up at a dock and is not under power at sea, see Table 1 as

follows:

Table 1.--Influence Factors

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

Test load in scale divisions (d) Maximum

------------------------------------------------------------ permissible

Class III \1\ Class IIII error (d)

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

0 500........... 0 50.. 0.5

500 2000........... 50 200 1.0

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 does 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 platform 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 MPEs. 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 information 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. When in use, a hanging scale must be

freely suspended from a fixed support or a crane.

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

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

distributor;

b. Model designation;

c. Non-repetitive serial number;

d. Accuracy class (III or IIII);

e. Maximum capacity (Max);

f. Minimum capacity (min);

g. Value of a scale division (d);

h. Temperature range (if applicable); and

i. 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 to this appendix 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

[[Page 5850]]

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 Annual Scale Inspections.

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

load tests must be conducted as specified in section 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 in section

4.2.1.2.

5. Definitions

Adjustable component--Any component that, when adjusted, affects

the performance or accuracy of the scale, e.g., span adjustment or

automatic zero-setting means. Manual or semi-automatic zero-setting

means are not considered adjustable components.

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

the changes to the values of the calibration or configuration

parameters of a scale.

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

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

Capacities vary from 20 kg to 50 mt. It is 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 consisting 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 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.

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 less than 20 kg

to greater than 50 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--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 of 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., MPEs.

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

is performing within the MPE 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 220

kg or less) that is adapted for use on a bench or counter or on the

floor. 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 that must be broken in order to change the operating or

performance characteristics of the scale.

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.

[[Page 5851]]

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 to Part 679--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 its normal operational state. When equipment is 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 must be held relatively constant, at a value close to

normal. The temperature is deemed to be relatively constant when the

difference between the extreme temperatures noted during the test

does not exceed 5 deg. C and the variation over time does not exceed

5 deg. C per hour.

A.2.4 Before the start of a test, the equipment under test (EUT)

must be energized for a period of time at least equal to the warm-up

time specified by the manufacturer. The EUT must remain energized

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 reduction Disturbance....... sf

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 MPE

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

, 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:

a. All functions must operate as designed.

b. All indications must be within the applicable MPEs.

Conduct of test: Refer to the International Electrotechnical

Commission (IEC) Publications mentioned in section A.4 Bibliography

(a) 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:

a. 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:

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Test load,

v. Indication,

vi. Errors, and

vii. Functions performance.

b. 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 in this A.3.1 Test Sequence section.

c. Reduce the temperature in the chamber as per the IEC

procedures to the specified low temperature. 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 in

this A.3.1 Test Sequence section.

d. 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 in this A.3.1 Test Sequence

section. Note: This test relates to a -10 deg. C to +40 deg. C

range. For special ranges, it may not be necessary.

e. 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 in

this A.3.1 Test Sequence section.

A.3.2 Damp Heat, Steady State

Test method: Damp heat, steady state.

Object of the test: To verify compliance with the applicable MPE

under conditions of high humidity and constant temperature.

Reference to standard: See section A.4 Bibliography (b)

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 of a constant relative humidity of 85 percent for a 2-day

period. The EUT must be tested during a weighing operation

consisting of the following:

For belt scales--the totalization of the

, 2 times each at

approximately the minimum

[[Page 5852]]

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:

a. All functions must operate as designed.

b. All indications must be within the applicable MPE.

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

section A.4 Bibliography (b) for detailed test procedures.

Supplementary information to the IEC test procedures.

Preconditioning: None required.

Condition of EUT:

a. 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.

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

water occurs on the EUT.

c. Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test Sequence:

a. 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:

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Test load,

v. Indication,

vi. Errors, and

vii. Functions performance.

b. 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 in this A.3.2 Test

Sequence section.

c. 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

MPEs under conditions of varying AC mains power supply.

Reference to standard: See section A.4 Bibliography (c).

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

to AC mains power during a weighing operation consisting of the

following:

For belt scales--while totalizing the

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:

a. All functions must operate correctly.

b. All indications must be within MPEs specified in sections 2,

3, or 4 of this appendix to part 679.

Conduct of the test:

Preconditioning: None required.

Test equipment:

a. Variable power source,

b. Calibrated voltmeter, and

c. Load cell simulator, if applicable.

Condition of EUT:

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

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

b. Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

a. Stabilize the power supply at nominal voltage 2

percent.

b. Conduct the tests specified in the test procedure in brief

and record the following data:

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Power supply voltage,

v. Test load,

vi. Indications,

vii. Errors, and

viii. Functions performance.

c. Reduce the power supply to -15 percent nominal.

d. Repeat the test and record the test data as indicated in this

A.3.3 Test Sequence section.

e. Increase the power supply to +10 percent nominal.

f. Repeat the test and record the test data as indicated in this

A.3.3 Test Sequence section.

g. Unload the EUT and decrease the power supply to nominal power

2 percent.

h. Repeat the test and record the test data as indicated in this

A.3.3 Test Sequence section.

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

must apply for each phase successively. Frequency variation applies

to 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 section A.4 Bibliography (d) 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 the following:

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

least the (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 1d or the EUT must detect and act

upon a significant fault.

Conduct of the Test:

Preconditioning: None required.

Test equipment:

a. 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.

b. Load cell simulator, if applicable.

Condition of EUT:

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

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

b. Adjust the EUT as close to zero indication as practicable

prior to the test.

Test sequence:

a. Stabilize all factors at nominal reference conditions.

b. Totalize as indicated in this A.3.4 Test Sequence section and

record the--

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Power supply voltage,

v. Test load,

vi. Indications,

vii. Errors, and

viii. Functions performance.

c. 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.

d. Repeat the steps four times in this A.3.4 Test Sequence

section, making sure that there is a 10 second interval between

repetitions. Observe the effect on the EUT.

e. 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.

f. Repeat the steps four times in this A.3.4 Test Sequence

section, making sure that there is a 10 second interval between

repetitions. Observe the effect on the EUT.

A.3.5 Bursts

[[Page 5853]]

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 section A.4 Bibliography (e)

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 the following:

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 sections

2.2.1.1b., 3.2.1.1b., and 4.2.1.1b, of this appendix, or the EUT

must detect and act upon a significant fault.

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

section A.4 Bibliography (e) 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:

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

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

b. Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test Sequence:

a. Stabilize all factors at nominal reference conditions.

b. Conduct the test as indicated in this A.3.5 Test Sequence

section and record the--

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Test load,

v. Indication,

vi. Errors, and

vii. Functions performance.

c. 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.

d. Stabilize all factors at nominal reference conditions.

e. Repeat the test and record the test data as indicated in this

A.3.5 Test Sequence section.

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 section A.4 Bibliography (f)

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

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

test is conducted during a weighing operation consisting of the

following:

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.

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 sections 2.2.1.1 b., 3.2.1.1 b., and 4.2.1.1 b.

of this appendix, or the EUT must detect and act upon a significant

fault.

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

section A.4 Bibliography (d) for detailed test procedures.

Supplementary information to the IEC test procedures.

Preconditioning: None required.

Condition of EUT:

a. 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.

b. 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.

c. The EUT must be operating under standard atmospheric

conditions for testing.

d. Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

a. Stabilize all factors at nominal reference conditions.

b. Conduct test as indicated in this A.3.6 Test Sequence section

and record the--

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Power supply voltage,

v. Test load,

vi. Indication,

vii. Errors, and

viii. Functions performance.

c. 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.

d. Repeat the above step at least nine times, making sure to

wait at least 10 seconds between successive discharges. Observe the

effect on the EUT and record as appropriate.

e. Stabilize all factors at nominal reference conditions.

f. Repeat the test and record the test data as indicated in this

A.3.6 Test Sequence section.

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 section A.4 Bibliography (g).

Test procedure in brief:

a. 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 the

following:

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

least the min (or a time sufficient to complete

the test). It is then exposed to electromagnetic field strengths as

specified in the Test severities in this section A.3.7 of this annex

to appendix A of this part.

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

one small test load.

b. The field strength can be generated in various ways:

i. The strip line is used at low frequencies (below 30 MHz or in

some cases 150 MHz) for small EUT's;

ii. The long wire is used at low frequencies (below 30 MHz) for

larger EUT's;

iii. Dipole antennas or antennas with circular polarization

placed 1 m from the EUT are used at high frequencies.

c. 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

section A.4 Bibliography (g) for detailed information on test

procedures.

[[Page 5854]]

Supplementary information to the IEC test procedures.

Test conditions:

a. 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.

b. 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:

a. 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.

b. Adjust the EUT as close to a zero indication as practicable

prior to the test.

Test sequence:

a. Stabilize all factors at nominal reference conditions.

b. Conduct the test as indicated in this A.3.7 Test Sequence

section and record the--

i. Date and time,

ii. Temperature,

iii. Relative humidity,

iv. Test load,

v. Indication,

vi. Errors, and

vii. Functions performance.

c. Following the IEC test procedures, expose the EUT at zero

load to the specified field strengths while slowly scanning the

three indicated frequency ranges.

d. Observe and record the effect on the EUT.

e. Repeat the test and observe and record the effect.

f. Stabilize all factors at nominal reference conditions.

g. Repeat the test and record the test data.

A.4 Bibliography

Below are references to Publications of the International

Electrotechnical Commission (IEC), where mention is made in the

tests in annex A to appendix A of this part.

a. 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.

b. 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.

c. 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).

d. 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.

e. 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.

f. IEC Publication 1000-4-2 (1995): Electromagnetic

compatibility (EMC) Part 4: Testing and measurement techniques--

Section 2: Electrostatic discharge immunity test. Basic EMC

Publication.

g. 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. 98-2244 Filed 2-3-98; 8:45 am]

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