ML20090D094
| ML20090D094 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 10/24/1975 |
| From: | Ross D JERSEY CENTRAL POWER & LIGHT CO. |
| To: | Boyd R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20090D096 | List: |
| References | |
| A-751024, A:751024, AO-75-28, GN-75-035, GN-75-35, NUDOCS 8302240054 | |
| Download: ML20090D094 (3) | |
Text
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.4 GN-75-035 s~
Jersey Central Power & Light Company &'
MADISON AVENUE AT PUNCH BOW 1. ROAD
- MORRISTOWN,N.J.07960
- 201-539-6111
[y".),*], puenc utinnes corporation Generai
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b OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Abnormal Occurrence Report No. 50-219/75-28 Report Date October 24, 1975 Occurrence Date October 15, 1975 Identification of Occurrence Failure of solenoid for valve V-28-24 (Standby Gas Treatment Orifice Valve) which subsequently rendered Standby Gas Treatment System No. 1 inoperable.
1 This event is considered to be an Abnormal Occurrence as defined in the Technical Specifications, paragraph 1.15.D.
Conditions Prior to Occurrence i
The plant was at steady state power with major plant parameters as follows:
Power:
Core, 700 MWt Electric, 191 MWe 4
Flow:
Recirculation, 6.1 x 10 gpm 6
Feedwater, 2.19 x 10 lb/hr Stack Gas:
3300 pci/sec j
Description of Occurrence On Wednesday, October 15, 1975, at approximately 2325, the Emergency Exhaust System EF-1-8 Fan Trip alarm was received in the Control Room.
Subsequently, it was found that the control circuit fuse for fan EF-1-8 was blown.
Follow-ing this event, an operability check of the redundant system (Standby Gas
)
Treatment System No. 2) was performed satisfactorily, i
8302240054 751024 PDR ADOCK 05000 i
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,, - r Abnormal Occurrence P.cport No. 50-219/75-28 Page 2 i
Apparent Cause of Occurrence Failure of'the air solenoid valve coil for air operated valve V-28-24 is the cause of the abnormal occurrence.
Analysis of Occurrence Since the Standby Gas Treatment System is a redundant system, and the full required processing capability is availabic through the other system (System l
No. 2), the only safety significance of this event is the loss of Standby Gas Treatment System redundancy.
4 Corrective Action The defectivo solenoid coil was replaced and Standby Gas Treatment System j
No. I was subsequently tested with satisfactory results.
Failure Data Basic Valve Data:
Manufacturer: Skinner Electric Valve Division New Britain, Connecticut Valve Number: V53ADB2100 l
Voltage:
115 Volts Power:
10 Watts Design Pressure:
100 psig i
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F GN-75-035 O
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Jersey Central Power & Light Company @
MADISON AVENUE AT PUNCH BOWL ROAD
- MORRISTOWN, N.J.07960
- 201-539-6111
....r.,
General Public Utilities Corporatson e
October 24, 1975 CD 0) k *r
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Mr. R. Boyd, Acting Director g.
8 a. g Division of Reactor Licensing D'oer M
Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission
/
4 to Washington, D. C. 20555
Dear Mr. Boyd:
Subject:
Oyster Creek Station 3
Docket No. 50-219 Abnormal Occurrence Report No. 50-219/75-2S The purpose of this letter is to forward to you the attached abnormal occurrence report in compliance with paragraph 6.6.2.a of the Technical Specifications.
t Ve q truly yours, t/'
C w
y DonaldA.Ross, Manager /
Generating Stations-Nuclear es Enclosures cc:
Mr. J. P. O'Reilly, Director Office of Inspection and Enforcement, Region 1 12554
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