ML20151E058
| ML20151E058 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 07/13/1988 |
| From: | Tiernan J BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| IEB-88-001, IEB-88-1, NUDOCS 8807250347 | |
| Download: ML20151E058 (3) | |
Text
'.
B ALTIMORE GAS AND ELECTRIC CHARLES CENTER R O. BOX 1475 BALTIMORE, MARYLAND 21203 JOSEPH A.TIERNAN JuIy 13, 'I988 Wet PatslDENT NUCLEAR ENERGY U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 NRC Bulletin No. 88-01: Defects in Westinehouse Circuit Breakers Gentlemen:
This letter confirms that the circuit breaker inspections required by the subject bulletin are complete for Calvert Cliffs Units 1 and 2. The short-term and long-term inspections were performed concurrent ly.
Detailed results are provided in Enclosure (1).
Should you have any further questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, i
C D.
(A&Pse-t-STATE OF MARYLAND TO WIT:
I hereb certify that on the
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day of,_
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, 19 U, before me, the subscriber a Notary Public of the State of Mti'ryland in and for
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, personally appeared Joseph A. Tiernan, being duly sworn, and states that he id Vice President of the Baltimore Gas and Electric Company, a corporation of the State of Maryland; that he provides the foregoing response for the purposes therein set forth; that the statements made are true and correct to the best of his knowledge, information, and belief; and that he was authorized to provide the response on behalf of said Corporation.
k WITNESS my Hand and Notarial Seal:
AL)
Notary Public g
My Comminion Expires:
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.16,I JAT/DLS/ dim I l Enclosure 8807250347 880713 PDR ADOCK 05000317 o
Document Control Desk July 13,1988 Page 2 cc:
D. A. Brune, Esquire J. E.
Silberg, Esquire R. A.Capra, NRC S. A.McNeil, NRC W. T. Russell, NRC D. C. Trimble, NRC l
O s'
o ENCLOSURE (1)
RESPONSE to NRC BULLETIN 88-01 RESU'!I3 of CALVERT CLIFFS UNIT 1. UNIT 2 INSPECTIONr, of WESTINGHOUSE DS TYPE CIRCUIT BREAKERS in CLASS lE APPLICATIONS
~
DS - 206 Breakers DS - 416 Brea}gn Unit 1 Unit 2 Combined Unit 1 Unit 2 Combined TOTAL INSPECTED 43 44 87 10 10 20 SHORT-TERM INSPECTION RESULTS Failed weld criteria 6.1.1 of 42 44 86 9
10 19 Westinghouse Technical Bulletin NSID-TB-87-Il as amended by NRCB 88-01.
1 NA Failed weld criteria 6.1.2 of 14 NA Westinghouse NSID-TB-87-11 as-amended by NRCB 88-01.
LONG-TERM INSPECTION RESULTS Failed weld criteria 7.1 of 27 9
36 8
1 9
Westinghouse Technical Bulletin NSID-TB-87-Il as amended by NRCB 88-01.
Failed alignment criteria of C
2 2
0 0
0 Westinghouse Technical Bulletin NSID-TB-87-! !.
- Unit I breakers were not checked for 6.1.2 criteria.
If they had failed 6.1.1 criteria, the time was taken to replace or repair them, to meet 6.1.1. The Unit 1 inspections were done during a refueling outage with available spare pole shafts, whereas the Unit 2 Ir.spections were done during a shorter, maintenance outage with no spare cole shafts available.
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