ML19347D291
| ML19347D291 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 05/13/1975 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| AO-10-75, NUDOCS 8103110752 | |
| Download: ML19347D291 (2) | |
Text
sA 091 LL 1100RMD VEDZ78(10DI)(1-0. 343C134)PD 05/14/75 0954 TLX CONSPO*4ER JKN
,*a ZCZC 205 DLY JACKSON MICHIGAN 5-14-75 EE PMS USNRC E$
ATT MR J G KEPPLER dy 799 ROOSEVELT ROAD GLEN ELLYN, IL 60137 RE DOCKET 50-155 LICENSE DPR-6 N
THIS REPORT IS SUBMITTED TO CONFIRM THE TELEPHONE REPORT TO MR XILEY In UF YOUR OFFICE ON MAY 13, 1975.
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REPORT NO-A0-10-75 DOCKET NO 50-155 g
2A. REPORT DATE-MAY 13, 1975
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- 28. OCCURRENCE DATE-MAY 13, 1975 3.
FACILITY-BIG ROCK POINT PLAUT 4.
IDENTIFICATION OF OCCURRENCE-SUSPECTED LEAK IN CORE SPRAY Q
SPARGER PIPING CONNECTION INSIDE THE VESSEL.
5.
CONDITIONS PRIOR TO OCCURRENCE-PLANT IN COLD SHUTDOWN FOR b~M MAINTENANCE AND MODIFICATION ACTIVITIES ASSOCIATED WITH POST-()
INCIDENT SYSTEM ENVIRONMENT DEFICIENCIES (AO-1-75).
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DESCRIPTION OF OCCURRENCE-DURING PREPARATIONS FOR MOVING Tl!E y(!)
PRIMARY CORE SPRAY SYSTEM VALVES TO A HIGHER ELEVATION, IT WAS NOTED 3
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TlilS DOCUMENT CONTAINS l
POOR QUAUTY PAGES
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Tb El,0 i dB THAT THE EXTERNAL PIPIT!G COULD NOT BE ADEQUATELY DRAINED PRIOR 'f0
- MAKIN'3 THE FIRST CUT.
SINCE THE WATER IN THE VESSEL VAS BELOW THE N
SPAR 3ER BUT NOT BELOV THE LOWEST CONNECTION ON A SHORT " CLAMPED h '
LOWER FITTIN3.
FITTIN3" PIPING SECTION IN THE VESSEL, A LEAK IS SUSPECTED AT THE 7:
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DESIGNATION OF APPARENT CAUSE OF OCCU9RENCE-EXACT CAUSE UN-(*t KNOWN.
8.
ANALYSIS OF OCCURRENCE-PRELIMINARY DATA INDICATES A LEAK OF b !
APPROXIMATELY 22 GALLON / HOUR AT STATIC VESSEL HEAD OF APPROXI!!ATELY C2 1.3 PSIG.
THE SUSPECTED LEAK POItJT IS APPROXIMATELY 3-1/2 FEET ABOVE THE FUEL AND THUS REPRESENTS NO HAZARD TO UNCOVERING THE FUEL
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JE; d5f IN THE VESSEL.
IN ADDITION, THE PIPIN3 SECTION IN QUESTION IS !!07 fn.3 c
I A PORTION OF THE PRESSURE BOUNDARY.
THE HEAD IS ON THE VESSEL VITl!
THE BACKUP CORE SPRAY SYSTEM AVAILABLE FOR THE MODIFICATION VORK IN l
PROGRESS.
THE DRAINING PROCESS VAS BEING DONE INSIDE CONTAINEEUT La ;
AND WATER IS THUS PROCESSED IN THE RADWASTE FACILITY.
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9.
CORRECTIVE ACTION-INVEUTIGATIVE ACTION IS IN PROGRESS'TO DE-i (J)
TERMINE NATURE OF LEAKAGE AND SUBSEQUENT ANALYSIS AND CORRECTIVE M
KACTION.
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IC. QFAILURE DATA - N/A 4
l CORRECTIION ON NUMBER 8.
SECOND - HAVE A PILE UP ON FIRST WORD
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SHOULD BE APPROXIMATELY 22 GALLON / HOUR, ETC (El
[.3 VV3VM CC DIRECTORATE OF LICENSING WASHINGTON DC FM...l C J HARTf1AN BIG ROCK NUCLEAR O
m R B SEWELL l@
l NUCLEAR LICENSING ADM
~,n CONSUMERS POVER CO 1945 V PARNALL RD JACKSON, MI 49201 g1 I
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