ML20151C190
| ML20151C190 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 01/20/1976 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| RO-P-1-76, NUDOCS 8103090150 | |
| Download: ML20151C190 (2) | |
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FACILITY - B13 ROCK POINT PLANT, CHARLEVOIX, IIICHIGEN.
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IDENTIFICATION OF OCCURRENCE - CONTAIMMENT' PRESSURE ~AND
!I-l$ p VACUU:1 DEVICES I!"PRDPER APPLICATION.
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- :S PRIOR TO OCCUTtnENCE - POVElt OPERATION - 145 t'L'T.
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DESCf:IPTION OF OCCUnnZNCE DURIN3 REVIEN OF TESTING RE0VIRE-D NEUIS ASSOCI ATED '<.'ITH 10 CFR 50, APPENDIX J, THE TOLLO'.!IllG -IN-f.i STi:U'!E!iT AND CONTFs0LS WERE IDENTIFIED AS HAVIN3 ' INADEQUATE DESIGi!
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4 THIS DOCUMENT CONTAINS POOR QlJAUTY PAGES l
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PT-173 - CONI A T Nl1:
V/iCVUM TRANSNITTER i.
L'F DP3-Je51, DDG-9052 - CONTAINi"ENT VACUUN RELIEF SUITCHES pp i n. f p s r/.t,, cA S, 6',5, 667 - REACTOR PROTECTION CONTAIN.':ENT PRESCUME
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- E ;1G'hTION JF APPARENT CAUSE OF OCCURRENCE - INA DEQUt.T E I.[6 deb 1'
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PRESOUF. Cf: ITED1A.
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M!$ LYSIS OF OCCURRENCE - THE POCCIPILITY EXISTS THAT AUTO'MTIC
.j CC' T AI' y"I Vt.CUU1 r.ELIEF FUNCTION VOULD NOT DE OPER ABLE IN THE
,i OCT DM CO'!:41 TIC'! SECAUSE DPS-9.151 ' AND DPS-9C52 VOULD NOT FUUCTIO:;
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t."TE.1 BEI3 EXPOSED TO PRESSURES GREATER THAN 15 PSIG.
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PG-56r THr.0U'M 557 ARE DEEMED ADEQUATE FOR THEIR SCRAM ISOLATI0')
Fuf:CII0'! SI':CE IT OCCURS AT A PT.ESSUiG FAR LO'.'Eff THAN THE PRESSU.' E vt!IC" "OULD
A USE S ITCH DIS ABILITY.
PT-173 UD'dLD PROBABLY RUMUEE i- -
US!1 AND CAUSE A SMALL 3HEAK OF INTEGRITY FOLLOUING A CONTAIM-F U f "iT 1:
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COMEC1 IV? ACT10*! - PROCEDURAL CD'JTROLS TO ISOLATE PT-173 AND
[ ' ;;- dos-9.%) /.Nn 'OS-9052 AND SUBSE9UENTLY RETuriN TO OPERATIOil AT l,
P;;ESSJ:'ES LEOS THAM 13 PSIG ARE BEING DEVELOPED.
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FAILU9E DATA - PT-173 - BAILEY f1ETER BD-1117 A 1e.
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