ML20087B635

Telecopy Ro:On 710822,leak Found in Main Coolant Sample Cooler.Sample Cooler Tube Bundle Will Be Replaced

ML20087B635
Person / Time
Site:	Robinson
Issue date:	08/24/1971
From:	Beaty G CAROLINA POWER & LIGHT CO.
To:	Jennifer Davis US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20087B626	List: ML20087B623 ML20087B635
References
NUDOCS 8403090307
Download: ML20087B635 (1)

Text

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p'JOHN u DAV crs t S,

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e E C DI N OF COMPLIANCE 230 PEACHTREE ST ATLA ^

CN AUG 22 1971, THE ACTIVITY OF THE COMP 0NENT COOLING VAS NOTICED '

c 10 HAVE INCREASED SLIGHTLY AND CONTINUED UNTIL A LEAK VAS FOUND '

1. 40 'ISCLATED IN A MAIN CCCLANT SAMPLE CCCLER, CN AUC Ps THE 7

SAMPLE C00LER TUBE BUNDLE WILL BE REPLACED THIS REPORT IS IN -

ACCORDANCE WITH TECHNICAL SPECIFICATIONS 6 P0 INT 6 P0 INT 1 POINT C PREVIOUSLY REPORTED BY TELEPHONE TO MR D KIRKPATRICK '

(N AUS 23 1971 7 G P PEATYs CARCLINA POWER AND LIGHT C0s ROBINSON PLANT HARTSVILLE -

SOCAR 8403090307 710827 ~ ' ~

PDR ADOCK 05000261 .

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UNITED STATES o

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30 PE AC HT R E E ST REET, NORT H W EST l y 7 m ,,, ,g,3 ,3,,,g3 3rna e AT L ANT A. GCCRGt A 30333 l In Reply Refer To:

l CO:II:50-261 December 8, 1971

,. .. - .) . U Carolina Power and Light Company Attn: Mr. J. A. Jones Senior Vice President Engineering and Operating 336 Fayetteville Street Raleigh, North Carolina 27602

' Gentlemen:

Reference is made to the failures of the Westinghouse, type DB-50, reactor scram circuit b~reakers in your H. B. Robinson No. 2 plant.

We recently received information relating to the performance of this type breaker at another reactor. This information is:

Two of the two reactor scram circuit breakers failed to trip on undervoltage during surveillance testing. The failure to trip was attributed to dirt accumulation on exposed linkages.

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This failure occurred after completion of inspection of the scram breakers to determine the applicability of the problems observed at H. B. Robinson No. 2.

It is requested that you inform this office within ten days, in writing, of the date when each of your reactor scram circuit breakers vill be inspected and tested. In addition, it is requested that you inform this office within ten days, in writing, following completion of your inspection and test, of your specific findings, including a description of corrective action taken or planned and the scheduled completion date of planned actions.

Should you have any questions concerning this matter, we vill be pleased to discuss them with you.

_ Sincerely, _

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John G. Davis ,

CO:II:JGD l Director Qq j l l I in 81^

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O O CDB #2 - Carolina Power & Light Cornpany (Robinson 2)

Ltr to Jones ft Davis dtd 12/8/71 (Bulletin)

Ltr to Davis tb Utley dtd 12/21/71 (Reply)

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L. Kornblith, Jr., R0 l

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