ML19347C831
| ML19347C831 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 09/11/1975 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| AO-21-75, NUDOCS 8103090787 | |
| Download: ML19347C831 (2) | |
Text
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])ockh nC' NRC BHDA CONSUMERS POWER COMPANY PARNALL ROAD OFFICE JACKSON, MI TWX 517-7 87-1987 9-11-75 4-09 PM 70- DIVISION OF REACTOR LICENSING, USNRC YESTERDAY, SEPT 11, AN INCORRECT TWX WAS SENT TO YOU SIGNED BY R B SEWELL. IT HAD REPORT NO A0-21-75 AS ITEM l.
ITEM 8 WAS MISSING AND SUSPECTED DUPLICATE WAS TYPED AT THE BOTTOM OF THE MESSAGE. THE TWX WAS ADDRESSED TO MR J G KEPPLER, USNRC WITH A COPY TO DIVISION OF REACTOR LICENSING, USNRC.
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WILL YOU PLEASE DESTROY THIS INCORRECT TELETYPE.
R 8 SEWELL NUCLEAR LICENSING ADMINISTRATOR END - DW NRC BHDA
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T NRC BHDA CON HAVE A MESSAGE FOR THE DIVISION OF REACTOR LICENSING, USNRC a
CONSUMERS POWER COMPANY PARNALL ROAD OFFICE JACKSON, MI TWX 517-787-1987 9-10-75,
TO-MR J G KEPPLER, USNRC d
7 99 ROOSEVELT ROAD GLEN ELLYN, IL 60137
__THLS TWX IS TO CONFIRM A SEPTEMBER 10, 1975 TELEPHONE REPORT OF D E
'DE MOOR REGARDINb AN EVENT CLASSIFIED AS AN ABNORMAL OCCURRENCE.
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REPORT NO - A0-21-75 DOCKET-50-155 2A. REPORT DATE - SEPTEMBER 10, 1975
- 28. OCCURRENCE DATE - SEPTEMBER 9, 1975 3.
FACILITY - BIG ROCK POINT PLANT 4.
IDENTIFICATION OF OCCURRENCE - CONTAINMENT ISOLATION VALVE TESTING PROCEDURE INADEGUATE - T365-04.
5 CONDITIONS PRIOR TO OCCURRENCE - POWER OPERATION s
6 DESCRIPTION OF OCCURRENCE - WHILE PIPING AND VALVES WERE BEING TRACED ON THE REACTOR CLEANUP RESIN SLUICE SYSTEM, IT WAS NOTED THAT A TELLTALE CONNECTION USED AS PART.0F THE RES N SLUICE ISOLATION VALV TEST WAS NOT AS SHOWN ON PLANT DRAWINGS. SINCE THE TELLTALE TAP WAS NOT IN THE PROPER LINE, THE TEST, AS USED SINCE 1973, HAS NOT BEEN A VALID TEST FOR VALVES CV,'4091, CV/dO92 AND CV/4093.
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DESIGNATION OF APPARENT CAUSE OF OCCURRENCE - DEFICIENCY IN PLANT DRAWING, P4ID Milo, PROBABLY DATING BACK TO CONSTRUCTION PERIOD IN 198 ANALYSIS OF OCCURRENCE - THE RESIN SLUICE SYSTEM VALVES CV/40F l
CV/4092 AND CV/4093 AND THE TWO MANUAL VALVES ASSOCIATED WITH CV/4092 AND CV/4093 ARE CLOSED EXCEPT FOR BRIEF PERIODS WHEN SLUICING IS BEING DONE AT APPROXIMATELY 3-4 MONTH INTERVALS WHILE AT POWER OPERATION. IN THE CLOSED CONDITION CV/4092 AND ITS MANUAL VALVE AS WELL AS CV/4093 AND ITS MANUAL VALVE PRESENTLY MAINTAIN A LEAKTIGHT BOUNDARY OF GREATER THAN 1300 PSIG. THE CONTAINMENT INTEG-RITY WITH THIS VALVE LINE-UP IS SATISFACTORY-HOWEVER, TESTING WILL HAVE TO BE ACCOMPLISHED ON CV/4091 TO ESTABLISH AUTOMATIC DOUBLE ISOLATION CRITERIA FOR THIS SYSTEM.
9 CORRECTIVE ACTION - TEST PROCEDURES AND EQUIPMENT CHANGES WILL BE MADE TO PROPERLY TFST THESE AUTOMATIC ISOLATION VALVES AS SOON AS PRACTICAL WHILE AT POWER OPERATION. THIS TESTING WILL RE DONE PRIOR TO USE OF THE VALVES FOR SLUICING.
l 'O. FAILURE DATA - NOT APPLICABLE.
R B SEWELL NUCLEAR LICENSING ADMINISTRATOR END - DW CC-DIVISION OF REACTOR LICENSING, USNRC C J HARTMAN, BIG ROCK POINT PLANT NRC BHDA THIS IS A SUSPECTED DUPLICATE NRC BHD4
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