ML20003B096
| ML20003B096 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 01/27/1981 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20003B097 | List: |
| References | |
| NUDOCS 8102100349 | |
| Download: ML20003B096 (2) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 12156841 4000 January 27, 1981 Mr. Boyce H. Grier, Director Office of Inspection and En forcement Region I US Nuclear Regulatory Ccmmission 631 Park Avenue King of Prussia, PA 19406
SUBJECT:
LICENSEE EVENT REPORT HArtRATIVE DESCRIPTION
Dear Mr. Grier:
The following was reported to Mr. C. Cowgill, Region I, Office of Inspection and Enforcement on January 13, 1011.
Reference:
Docket No. 50-273 Report No.: 3-81-03/1T Report Date: .
January 27, 1.931 Occurrence Date: January 13, 1981 Facility: Peach Bottom Atomic Power Station RD #1, Delta, PA 17314 Technical Specification
Reference:
Technical Specification 3.5.C.1 requires in part that "The HPCI Subsystem shall be operable whenever there is irradiated fuel in the reactor vessel, reactor pressure is greater than 105 psig, and prior to reactor startup..."
Prompt reporting requirements established in IE Bulletin 30-17.
Description of the Event During a Surveillance Test of the HPCI auxiliary oil pump, an oil leak of about 3 to 5 GPM was discovered on the oil supply line to the turbine manual /overspeed trip mechanism.
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l- Page 2 Probable Consequence of th'e Occurrence The Surveillance Test did not require HPCI turbine operation, therefore, there was no possiblity of damage to the HPCI bearings. If the HPCI turbine had been started with oil leaking from the line, oil would still have been supplied to the bearings for about thirty minutes at reduced pressure. At that point a turbine bearing low pressure alarm would have been received.
Remaining ECCS systems were immediately verified to be operable Cause of the Event:
The cause of the oil leak was determined to be a ruptured diaphragm in the control valve on the oil supply line to the tarbine manual /overspeed trip mechanism.
Corrective Actions:
The diaphragm was replaced and the HPCI system satisfactorily tested and returned to service on January 13, 1981.
Very truly yours,
- W '
M. J ,Cooney Sup intendent Generation Division - Nuclear At tac hmen t ec: Director, NRC - Office of Inspection and Enforcement Mr. Norman M. Haller, NRC - Office of Management &
Program Analysis
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