05000315/LER-1985-017, :on 850417,accumulated Leakage Exceeded Tech Spec Limits Found While Performing Type B & C Leak Rate Tests.Cause Unknown.Penetrations Repaired

:on 850417,accumulated Leakage Exceeded Tech Spec Limits Found While Performing Type B & C Leak Rate Tests.Cause Unknown.Penetrations Repaired

ML20133C973
Person / Time
Site:	Cook
Issue date:	10/01/1985
From:	Blind A INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML20133C971	List: 05000315/LER-1985-017, :on 850417,accumulated Leakage Exceeded Tech Spec Limits Found While Performing Type B & C Leak Rate Tests.Cause Unknown.Penetrations Repaired 05000315/LER-1985-019, :on 850420,ice Inventory within Ice Condenser Determined to Be Below Tech Spec Limits.Cause Unknown.Ice Weight of Deficient Rows Increased by Ice Replenishment Program ML20133C966
References
LER-85-017, LER-85-17, NUDOCS 8510070549
Download: ML20133C973 (1)

LER-1985-017, on 850417,accumulated Leakage Exceeded Tech Spec Limits Found While Performing Type B & C Leak Rate Tests.Cause Unknown.Penetrations Repaired

Event date:
Report date:
3151985017R00 - NRC Website

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PLCILiTY NAME (11 DOCEET NUMGE R 821 PAGE4L D.C. COOK PLANT, UNIT 1 0151010 [ 013 l 115 1 lOFl0 l 1 ftTLE tet CONTAINMENT TYPE B AND C LEAK TESTS EVENT DATE ill LER NUMeER isk REPORT DATE (71 OTHER F ACILITIE S INVOLVED 141 MONTM DAY vtAR TEAR f,,,

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NAME TELENONE NUV8ER ARE A (CQE A.A. BLIND - ASSISTANT PLANT MANAGER 611 16 4 l615 l -1519 I 011 COMPLETE ONE LINE FOR E ACM COMPONE%T F AILURE DESCRISED IN THIS REPORT (131

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THIS IS A REVISION 'IO LER 85-017 SUPMITIED ON MAY 9,1985.

CN APRIL 17,1985, AT 0250 HOURS, WITH TIE REACIOR COOIRE SYSTEM IN MODE 5 (00ID SHUIDOWN), THE ACCUMULATED LEAKAGE FOUND KHILE PERmPMING TIE TYPE B AND C LEAK RATE TESTS ON CONTAINMEtE PENETRATIONS EXrFmED THE L.C.O. VAIIE (0.60 L ) OF TECHNICAL SPECIFICATION 3.6.1.2.b.

THE FINAL TEST RESULTS FOR ALL TYPE B AND C LEAKAGE INDICATED AN AS-FOUND LEAKAGE OF 0.698L THE SUMMATICN OF THE 'IOTAL TYPE B AND C LEAKAGE WITH TIE 0.00666 PERCENT WEfGfr/ DAY (0.02664 L LEAKAGE VALUE FIOi TIE CURREtE UNIT 1 TYPE A TEST, YIELDS A LEAKAGE RATE OF 0.723)L, WHICH IS LESS THAN THE TECHNICAL SPECIFIC VALUE FOR 'IOTAL LEAKAGE.

TIE ANALYSIS CONDLCIED FOR THE FSAR, 'IO DLTERMINE ODtEROL ROCM HABITABILITY AND OFF-SITE DOSES, ASSUMED 'IIIE FULL L VALUE FROM TfE ONSLT OF THE ACCIDENT. BDCAUSE a

TIE AS-EDUND VALUE WAS LESS THAN l 0 L, IT IS CONCLUDED TIIAT TIE AS-FOUND LEAKAGE DID NCfr CONSTI'IUTE AN UNREVIEWED SAFEI@ QUESTION AS DE'INED IN 10 CFR 50.59, NOR WOULD IT HAVE ADVERSELY IMPACTED PUBLIC HEALTH AND SAFETY.

AN AS-LEET TYPE B AND C LEAK PATE OF.037 L WAS OBTAINED FOLIIMING REPAIR OF TIE a

INVOLVED PENETRATIONS.

PREVIOUS OOCURRENCES OF A SIMIIAR NA'IURE INCLUDE: 50-315/83-072, 50-315/82-058, 50-315/81-025, 50-316/81-018, 50-315/81-011, 50-316/79-053, 50-315/79-034, AND 50-316/79-020.

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