ML20042D093

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Submits Interpretation & Clarification of NRC Bulletin 88-010, Nonconforming Molded Case Circuit Breakers. Agrees That Testing of Spares Need Not Be Performed Provided Listed Actions Taken
ML20042D093
Person / Time
Issue date: 01/05/1989
From: Rossi C
Office of Nuclear Reactor Regulation
To: Holahan G, Varga S
Office of Nuclear Reactor Regulation
Shared Package
ML20037B365 List:
References
FOIA-89-404 IEB-88-010, IEB-88-10, NUDOCS 8901110006
Download: ML20042D093 (5)
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Jt 0 5 teeg MEMORANDUM FOR:

Steven A. Varga, Director Division of Reactor Projects - 1/11 Office of huclear Reactor Regulation Gary M. Holahan, Acting Director Division of Reactor Drojects - !!!, IV, V Office of Nuclear Reactor Regulation fi FROM:

Charles E. Rossi, Director Division of Operational Events Assessment Office of Nuclear Reactor Regulation

SUBJECT:

INTERPRETATION / CLARIFICATION OF BULLETIN 88-10; NONCONFORMING MOLDED-CASE circuli BREAKERS Several addressees of the sutject bulletin have inquired about the possibility of not testing molded-case circuit breakers (CBs) in stores that are not traceable to the circuit breaker manufacturer (CBM) even though their trace-ability of. stored CBs is greater than 80 percent (see item 3 of the actions requested).

These addressees wish to identify those_CBs in stores that are not traceable to the CBM, specify that these CBs are not to be used in_ safety-related applications, in accordance with item 7 of the actions requested, and proceed directly to determine the traceability of CBs installed in the plant-as specified by item 4 of the actions requested.

The NRC agrees that testing of spares need not be perfomed provided the following actions are taken:

All addressees are requested to identify and-trace all molded-case CBs in stores as specified in item 1 of the actions requested.

Addressees who elect not to perfom the testing requested by item 3 of the bulletin actions are requested to perform items 4 and 5 of the actions requested regardless of the traceability results of item 1.

All addressees are requested to forward in their written reports the infomation on CBs that are found not to be traceable to the CBM.

Addressees who do not perform the bulletin actions as requested, such as not perfoming any testing of CBs in stcres are to indicate that fact in their written reports; the current bulletin reporting require-ments specify that addressees are to confirm that they have completed or will implement the actions as requested by the NRC.

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Multiple Addressees In addition, the Of fice of 'nvestigations and the Vendor-Inspection Branch are requesting that addressees retain those CBs that are found.to be nontraceable to the CBM for c period of at least sir months after identification.

These breakers are needed to support NRC investigations of suspect electrical equip-ment distributors, suppliers, or rearaufacturers.

The use of non-traceable breakers in non-safety-related applications will be evaluated a f ter the NllMARC initiative for such breakers has been reviewed by the NRC.

If you have any questions regarding this matter, please coritact Paul Gill (X2DDll) or Jairre Guillen (x21170).

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Charles E. Rossi.. Director Division of Operational Events Assessment Office of Nuclear Reactor Regulation DISTRIBUTION FPGillespie, NRR DCrutchfield, NRR BBoger, NRR Glainas, NRk MVirgilio, NRR LRubenstein, NRR LShao, NRR JRichardson, NRR AThadani, NRR BGrimes, NRR FCongel, NRR JRoe, NRR FJMiraglia, NRR CERossi, NRR CHBerlinger, NRR JGuillen, NRR WDLanning NRR Central Files DCS DOEA R/F 0GCB R/F JGuillen R/F

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-2 In addition, the Office of Investigations and the Vendor Inspection Branch are requesting that addressees retain those CBs that are f ound to be nontraceable

_i to the CBM for a period of at least six months after identification.

These breakers are needed to support NRC investigations of suspect electrical equip-ment distributors, suppliers, or manuf ac turers.

The use of non-traceable breakers in non-safety-related applications will be evaluated af ter the NUMARC initiative for such breaktrs has been reviewed by the NRC, if you have any questions regarding this niatter, please contact Paul Gill (X20811) or Jaime Guillen (X21170),

Charles-E. Rossi, Director Division of Operational Events Assessment Office of Nuclear Reactor Regulation DISTRIBLITION FFGillespie, NRR DCrutchfield, NRR BBoger, NRR Glaines, NRR MVirgilio, NRR LRubenstein, NRR LShao, NRR JRichardson, NRR AThadani, NRR BGrimes, NRR FCongel, NRR JRoe, NRR FJMiraglia, NRR CERossi, NRR CHBerlinger, NRR JGuillen, NRR WDLanning, NRR

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Multiple Addressees The use of non-traceable breakers in non-ssfety-related applications will be evaluated after the NUMARC initiative for such breakers has been reviewed by the NRC, If you have any questions regarding this matter, please contact Paul Gill l

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