ML20247Q485

Responds to NRC Bulletin 88-010, Nonconforming Molded-Case Circuit Breakers. Util Maintaining Stored Spares for safety-related Applications,Per Criteria for Action Item 7

ML20247Q485
Person / Time
Site:	Yankee Rowe
Issue date:	03/31/1989
From:	Drawbridge B YANKEE ATOMIC ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BYR-89-63, IEB-88-010, IEB-88-10, NUDOCS 8904070142
Download: ML20247Q485 (5)

Text

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YANKEEATOMICELECTRIC COMPANY "*fy"*lo".sjo','*;*g'"

J .N . 580 Main Street, Bolton, Massachusetts 01740-1398 YANKEE March 31, 1989 BYR 89-63 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 j

References:

(a) License No. DPR-3 (Docket No. 50-29)

(b) USNRC Letter to YAEC, dated November 22, 1988

Subject:

Response to NRC Bulletin No. 88-10 Nonconforming Molded-Case Circuit Breakers

Dear Sir:

Nuclear Regulatory Commission (NRC) Bulletin No. 88-10, Reference (b),

requested Yankee to take actions to provide reasonable assurance that molded-case circuit breakers purchased for use in safety-related applications without verifiable traceability to the circuit breaker manufacturer perform their safety functions. Attached to this letter is the required written report on our progress to date.

We trust this information is satisfactory, however, if you have any questions, please contact us.

Very truly-yours, f

Y 'KEE ATO C ELECTRIC COMPANY

'/ .4 dad B. L. Drqwbridge Vice Presfdent-end Manager of Operations BLD/bil/0273v cc: USNRC Regional Administrator Region 1 UShTC Region I USNRC Resident Inspector, YNPS COMMONWEALTH OF MASSACHUSETTS)

)ss MIDDLESEX COUNTY )

Then personally appeared before me, Bruce L. Drawbridge, who, being duly sworn, did state that he is Vice President and Manager of Operations of Yankee Atomic Electric Company, that he is duly authorized to execute and file the '

foregoing document in the name and on the behalf of Yankee Atomic Electric i

Company and that the statements therein are true to the best of his knowledge l and belief. /

- wW fielen J. Notary Public

{DR890407hh A

p

, Sammarco My Commission Expires November 7, 1991

l ATTACHMENT A -

NRC Bulletin No. 88-10 l

)

l Each reporting requirement in NRC Bulletin 88-10 is listed below with its l specific respense: '

l. All holders of operating licenses are required to provide a written report by April 1, 1989, that:

a. Confirms that only molded-case Circuit Breakers (CBs) that meet the criteria of Item 7 of the actions requested are being maintained as

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stored spares for future use in safety-related applications. J l

Response: Yankee is maintaining as stored spares for safety-related applications only CBs that meet the criteria of Action Item 7.

b. Summarizes the total number, manufacturer, model number, and to the extent possible the procurement chain of those CBs that could not be traced to the Circuit Breaker Manufacturer (CBM) in Items 1 and 4 of the actions requested. For installed CBs, also identify each system in which they are/were installed. If Item 4 of the actions requested has not been completed by April 1, 1989, due to the schedule for tests in Item 3 of the actions requested, this information should be updated within 30 days of the completion of Item 4 to address those additional CBs that could not be traced to the CBM.

Response: Summary sheets listing all nontraceable Cbs in stock and in service are listed on Attachments Al and A2. Item 4 of actions requested has been completed by Yankee Atomic Electric Company (YAEC).

C. Confirms that Items 1, 2, 3, 4, 5, 6, and 7 of the actions requested have been completed or will be implemented as requested.

Response: Action Items 1, 2, 4, and 6, have been completed by Yankee.

Action Item 3 is not applicable to Yankee since less than 80% i of stored spare CBs for safety-related use are traceable to l the CBM.

Action Item 5 will be completed prior to restart after the 1990 refueling.

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+. 1 ATTACHMENT A (Continued)

NRC Bulletin No. 88-10 Action Item 7 will be implemented as requested except in the case when a breaker is no longer available from the CBM (obsolete CBs,. This would only-apply when the CB needed cannot reasonably be replaced with a' current model CB available.from a CBM due to the physical differences between the obsolete and current models. Obsolete CBs purchased.for safety-related applications and not traceable to the CBM, will be dedicated through the commercial grade dedication program. l Part of this dedication will be testing the CB in accordance with the test criteria specified in NRC Bulletin 88-10, Attachment A.

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