ML20151C228
| ML20151C228 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 05/28/1975 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20151C218 | List: |
| References | |
| AO-14-75, NUDOCS 8103110745 | |
| Download: ML20151C228 (2) | |
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THIS Ti.,X IS SUBMITTED TO CONFIRM INFORMATION REPORTED BY TELEPHONE, D E DE MOOR TO E JORDAN ON MAY 27, 1975, i.
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REPORT NO-A0-14-75 DOCKET 50-155 2A.
REPORT DATE-MAY 27, 1975
$F 1201 (RS-69) 28.
OCCURRENCE DATE-t!AY 26, 1975 3.
FACILITY-BIG ROCK POINT PLANT 4.
IDENTIFICATION OF OCCURRENCE-CONTAINNENT VENTILATION SUPPLY VALVE LEAK TEST ESCESSIVE.
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CONDITION PRIOR TO OCCURRENCE-PLANT IN C0'LD SHUIDOWN 'FOR
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MODIFICATION ACTIVITY ASSOCIATED WITH A0-1-75.
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- 6., DFSCRIPTION.0F OCCURRENCE-DURING A SPECIAL MONTHLY TEST OF THE VENTILATION VALVE LEAK RATE, F.XCESSIVE LEAKAGE WAS NOTEL DURIN3 THE TEST B ASED ON PRESSURE G AU3E READIt'3S.
THE SPECIAL TEST VAS BEING CONDUCTED TO VERIFY CORRECTIVE ACTION THAT WAS APPLIED AS
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A RESULT OF A0-8-75 DESCRIBED IN OUR LETTER OF MARCH 51, 1975.
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DESIGNATION OF APPAREllT CAUSE OF OCCURRENCE-EXACT CAUSE IS Ut!-
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ANALYSIS OF OCCURRENCE-INVESITGATION IS IN PROGRESS.
PREVIO US FAILIDE VAS ASSOCIATED WITH CV/4097 ONLY, WHICH IS ONE OF TVO VALVES IN SERIES AND WOULD NOT REPRESENT A BREACH OF CONTAllt:ENT
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NOR AN UNDUE HAZARD.IN VIEW OF THE ISOLATION DESIGN.
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CORRECTIVE ACTIOil-TEST VAS TERMINATED AND REPORTED TO PLANT N AN AG Ei!ENT.
INVESTIG ATION IS IN PRO 3RESS VITH PLAi)T IN COLD e
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- 10. FAILURE DATA-REFERENCE A0-8-75 0F MARCH 51, 1975.
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