ML20090D201
| ML20090D201 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 09/02/1975 |
| From: | Carroll J, Sullivan J JERSEY CENTRAL POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20090D198 | List: |
| References | |
| 9481, AO-75-25, NUDOCS 8302240153 | |
| Download: ML20090D201 (5) | |
Text
initial Telephrne Ddte cf' NbM
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pport Date:
Augut W O,1975 Occurre-- na August 29,1975 K
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Initial t!ritten Time of.
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September 2, 1975 Occurrence:
1833 OYSTER CREi!K NUCLEAlt GENERATING STATION FORKED RIVER, NEW JERSEY 08731 Abnormal Occurrence Report No. 50-219/75/ 25 IDENTIFICATION Violation of the Technical Specifications, paragraph 3.6. A.a OF OCCURRENCE:
Failure.of the Stack Gas Sample System to continuously Monitor Stack releases while the reactor was in an unisolated condition.
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1his event is consideicd to be an abnormal occurrence as de-l.
fined in the Technical Specifications, paragraph 1.iS B CCNDITIONS PRIOR i
TO OCCURRENCE:
Steady State Power X
Routine Shutdown l
Ilot Standby Operation Cold Shutdown
' Load Changes During Refuc}ing Shutdown Routine Po::er Operation Routine Startup Other (Specify)
Operation A
g The reactor mode switch was in the refuel position with the Reactor ant Temperature less than 2120F.
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DESCRIPTION At 1833 on August 29, 1975, a Stack Gas Sample Line Low Flow Alarm was OF OCCURIENCE: received in the control room.
The Shift Foreman was immediately notified and upon arriving at the Stack Gas Sample Station, discovered Stack Gas Sample Pump "A",
the pump that had been operating, not running.
The thermal overload was reset and l
Stack Gas Sample Pump "B" started at 1843.
Stack Gas Sample Pump "A" had just been returned to service earlier in the day after undergoing extensive maintenance inspection and repair as a result of a similar occurrence on August 10, 1975.
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COPY SENT REGION
P
. Report 16. 50-210/75/ 25 o..
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'4PPARI2iT,CAUSE Design Procedurc 0F DCCURRENCE:
Manufacture Unusual Service Coitdition Installation /
Inc. Environmental
. Construction Component Failure Operator A
Other (Specify)
The cause of this occurrence is unknown at this time.
ANALYSIS OF af OCCURRENCE:
The safety significance of this event is considered minimal since the time of d
the occurrence the Reactor was shutdown and both the Off Gas System and the Mechanical Vacuum Pump System were in an isolated condition.
Additionally, a check of tiie Rcactor Building Ventilation Exhaust Monitors showed no radiation levels. above background (a 1.5 mr/hr.)
CORRECTIVE The thermal overload protection (common to both pumps) was reset and the "B" ACTION:
Stack Gas Sample Pump put in service.
The "A" pump was secured.
TAILURE DATA:
Previcus abnormal occurrences involving th'e Stack Gas Sample Pumps:
1.
Abnormal Occurrence Report No. 74/53 2..
Abnormal Occurrence Report No. 74/54 3.
Abnormal Occurrence Report No. 74/57 4.
Abnormal Occurrence Report No. 74/61 5.
Abnormal Occurrence Report No. 75/6 61 Abnormal Occurrence' Report No. 75/22
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Date:
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-1ifitial Telephone Da'te of' s
Jteport Date:
August 30, 1975 Occurrence:
August 29. 1975 Initial t:ritten Time of Report D:te:
Septer.5er 2.1975 Occurrencc:
1833
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OYSTER CREEK h*UCt. EAR GENERATING STATION 1
FORKED RIVER, NEll JERSEY 08731 f
i Abnormal Occurrence
[
Report No. 50-219/75/ g l
3DENTIFICATION Violation of the Technical Specifications, para;'rnph 3.6.A.a OF OCCURPr;CE:
Failure of the Stack Gas St..ple Syste:a to continuously Ibnitor
Stack releases while the reactor was in an unisolated condition.
I 1his event is considered to be an abnormal occurrence as de-fined in the Technical Specifications, paragraph 1.15_B 00NDITIONS PRIOR TO CCCURPa1CE; Steady State Power X
Routina Shutdown i
Ilot Standby Operation l
Cold Siiutdown Load Changes During Refueling Shutdown Routine Pc cr Operation Routine Startup other (Specify)
Operation The reactor code switch was in the refuel position with the Reactor Coolant Temperature less than 2120F.
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DESCRIPTIm At 1833 on August 29. 1975 a Stack Gas Sa=ple Line Low Flow Alant. was OF OCCUmuiNCE: received in the control roo a.
The Shift Forcnan was it;.ediately notified and upon arrivir.g at the Stack Gas Sa=ple Staticn. discovered Stack Gas Sr.ple Ptra "A".
the pu=p that had been operatin;1 not running. The therr31 overload was reset and Stack Cas Sa:ple Pts;> "3" started.at 1.M3.
Stack Gas S: ;21e Pu=o "A" had just been and repair as a result of a similar occurrence on Augustreturned to service earlier in the d 10, 1975.
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- -spas sapaa w66*aa. m.sess port No. 50-219/75/ 25 s
'PARTNT CAUSE Design P mcedure
- DCCURRD'CE:
Manufacture Unusual Servico Conlitiot Installation /
Inc. Environmeatn1 Construction Component railurc A
Other (Specify)
Operator The cause of this occurrence is unknown at this title.
Af ALYSIS OF The safety significance of this event is considered miniraal since the tiro 09 d
12)RRENCE:
the occurrence the Reactor was shutdcun and both the Off Gas System and the Hechanical Yacuu:s Pec.p Syster. imre in an isolated condition. Additionally.
a check of the Reactor Building Ventilation Exhaust Konitors showed no radiation levcis above backgn>und (~ 1.5 w /hr.)
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a tRECTIVE The.thennal overload protection (cc::rson to both pumps) was reset and the "G" TIox:
Stack Gas Sample Pizup put in service. The "A" pu:cp was secured.
iLURE DATA:
Previous abnormal occurrences involving the Stsck Gas Sagle Pu:nps:
1.
Abnomal Occurrence Report No. 74/53 2.
Abnomal Occurrence Report No. 74/54 3.
Abnomal Occurrence Raport No. 74/57 4.
Abnomal Occurrence Report No. 74/61 5.
Abnomal Occurrence Kcport No. 75/6 6,
Abnomal Occurrence Report No. 75/22 Date:
I C-r' pared by:
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James P. O'Reilly Directorate of Regulatory Operations Region I 631 Park Avenue
.b King of Prussia, Pennsylynaia 19406
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.l FRON:
Jersey. Central Power G Light Co:::pany Oyster Creek Nuclear Generating Station Docket #50-;
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Forked River, New Jersey 03731 i
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SUBJECT:
Abnormal Occurrence Report No. 50-219/75/ 25 i
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The following is a preliminary report being j
submitted in compliance with the Technical i
j Specifications, paragraph 6.6.2.
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Preliminary Appxuval:
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j J. T. Carrofl, Jr.
Date 1.
lCC: Mr. A. Gianbusso peam m 5
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