ML20090D247
| ML20090D247 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/04/1975 |
| From: | Carroll J, Edelhauser J JERSEY CENTRAL POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-219-75-21, NUDOCS 8302250449 | |
| Download: ML20090D247 (3) | |
Text
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James P. O'Reilly /
Directorate of Rebalatory Operations Region I 631. Park Avenue King of Prussia, Pennsyhania 19406 PT.0H Jersey Central Power G Light Company Oyster Creek Nuclear Generating Station Docket #50-2'.
Forked River, New Jersey 08731 A
SUBJECT
- Abnormal Occurrence Report No. 50-219/75/ 21 t
The following is a p2tlininary report being submitted in compliance with the Technical Specif.ications, paragraph 6.6.2.
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Preliminary Approval:
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. t. Carroll, Jr.
Date S 75 CC: Mr. A. Giambusso f
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8302250449 750804 l
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Initial Telephone Date of
.= Report Date:
8-1-75 Occurrence:
8-1-75 Initial h~ritt en Time of Report Date:
8-4-75 Occurrence:
10:40 OYSTER CREEK NUCLEAR CENERATING STATION FORKED RIVER, NEW JERSEY 08731 Abnormal Occurrence Report No. 50-219/7A/ 21 5
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IDENTIFICATION
< Failuro of isolction consenser systen 5 stema mane valve OF OCCURRENCE:
close on simulation of a high steam line (V-14-32to flow signal This event is considered to be an abnormal occurrence as de-fined in the Technical Specificaticns, paragraph 1.15 DEG.
CCNDITIDSS PRIOR 1 Steady State Power Routine Shutdown TO OCCURRENCE:
Hot Standby Operation Cold Shutdeen Load Changes During Refueling Shutdown Routine Power Operation Routine Startup Other (Specify)
Operation s
P'o v e r :
Core 1661 MWt Electric 549 MWe Plow:
Recire.
15.S x 104 GPM Pecd.
6.04 x 106 IB/HR
-' Stack Gas 10 800 o C 1, nec DESCRIPTIE OF N On Friday, August 1.
1975, at approximately 10:40 while perforcing routine surveillance on the "B"
isolation condenser systen, steam line valve V-14-32 failed to close on simulation of stean line high flow.
The motor operated isolation valves and condensate make up valves on."A" isolation condenser were tested for operability and V-14-32 was closed manually.
Further investigation revealed that V-14-32 had failed to close because the motor operator torque switch had tripped.
The failure of V-14-32 to close is attributed to a low setting for the motort0Perator torque switch.
The setting for the increased to a higher valve within the
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torque was recommended manufactuger's rzuge( The valve was. check ed-*
- Perable and "B" isolation condenser was returned to service.
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O-O drt No.50-21J' /75/ 21
'RD T CAUSE Design lCCIITJtC;CE:
X Procedure tianufacture q
Unusual Service Condition p
Installation /
Inc. Environmental y
Construction Component Faf:ure Operator L
Other (Specify) i a
.YSIS OF MCE:
The signigicance of this event was a loss of' redundancy for "B" isointion condenser to isolate on steam lino high flow.
The other valves in the system had demonstrated their operability during the surveillance.
In addition "A" j
isolation condenser system was checked operable and would i
have performed the purpose of the system had it been needed.
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s liCTIVE M:
The setting for V-14-32 notor operator torque switch was
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increased and the valve was retested.
Further corrective action is under investigation.
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.itE DATA:
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i tred by:
Jim Edelhauser.
Date:
August 4, 1975 i
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