ML20031C345

RO 77-31:on 770814,during Routine Type C Testing of Containment penetrations,2-inch Check Valve in Demineralized Water Line Inside Containment Leaked Excessively.Caused by Deposits in Check Valve.Valve Repaired within 7-h

ML20031C345
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	08/25/1977
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
References
RO-77-31, NUDOCS 8110070072
Download: ML20031C345 (1)

Text

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uca c1 lxlr!sixirlil 10101-101 o f o f o l o l-l 'a l o l 14111111111 lolli 7 89 14 IS 23 ES 30 31. 32 seseet amm SOupCE Occag? Ma.am

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lol5lal-lolil515l l o 1 S l 1141717 l 101812l5 l7 l7 l 7 e si se ta 60 et 6e se 74 75 ao EVENT CESCRPTCM Q l Durinz toutine Me C testing of contain=ent :enetrations, the 2" c'eck valve in thel 7 89 80' Q l de=ineralized vater line inside of contain ent lesied excessively. Contain=ent l

7 99 80 Q l vas verified to have been intact bv verifvine a redundant air-ceerned vs1ve cv/4105l 7 09 80

15 1 The check valve vas re aired and tested within 7 hn rs.

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7 89 to 11 12 17 43 de 47 48 CAUSE CESCRurTION l The 2" cone dise c'.eek valve had accumilated 'esosits durine fif teen vears of ser-l le 7 89 80 Q l vice and this va. the first recuired test. The future e.o-voar leak test interval l 7 89 80 l is deemed to provide adecuate surveillance for this coneonent.

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10 11 44 45 60 PERSONNEL EXPOSURES m.

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7 89 11 12 og pro 8ABLE CONSEQUENCES E I None l

7 89 60 LOSS OR DAMAGE TO FACRJTY tvse erscarrene 8 LzJ I N/A I

7 89 10 80 PURCTY Q l None l

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