05000219/LER-1982-038, Forwards LER 82-038/03L-0.Detailed Event Analysis Encl

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Forwards LER 82-038/03L-0.Detailed Event Analysis Encl
ML20062H393
Person / Time
Site: Oyster Creek
Issue date: 08/02/1982
From: Fiedler P
GENERAL PUBLIC UTILITIES CORP.
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20062H396 List:
References
NUDOCS 8208160034
Download: ML20062H393 (3)


LER-2082-038, Forwards LER 82-038/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
2192082038R00 - NRC Website

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GPU Nuclear h _

gf P.O. Box 388 Forked River, New Jersey 08731 609-693-6000 Writer's Direct Dial Number:

August 2, 1982 Mr. Ronald C. Haynes, Administrator Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Haynes:

Subj ect: Oyster Creek Nuclear Generating Station Docket No. 50-219 Licensee Event Report Reportable Occurrence No. 50-219/82-38/03L This letter forwards three copies of a Licensee Event Report to report Reportable Occurrence No. 50-219/82-38/03L in compliance with paragraph 6.9 2.b.3 of the Technical Specificaticns.

Very truly yours,

_1 M V Peter B. Fiedler Vice President and Director Oyster Creek PBF:lse Enclosures cc: Director (40 copies)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, NJ 08731 8208160034 820802 PDR ADOCK 05000219 S PDR GPU Nuclear is a part of the General Public Utilities System fEJL

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OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Licensee Event Report Reportable Occurrence No. 50-219/82-38/03L Report Date August 2, 1982 Occurrence Date June 30, 1982 Identification of Occurrence -

A monthly channel check of the safet, and relief valve backup monitoring system ,

(thermocouples) was not performed within the time frame specified in the  !

Technical Specifications, Section 4 13. A.l.

This event is considered to be a reportable occurrence as defined in the Technical Specifications, paragraph 6.9 2.b.3 Conditions Prior to Occurrence The plant was in the RUN mode at various power levels during the time period of the event.

Description of Occurrence l On June 30, 1982, it was discovered that the monthly channel check of the safety and relief valve thermocouples had not been performed. The Master Surveillance Schedule called for the surveillance to be performed on June 4, 1982. The surveillance had previously been completed on May 7,1982. Based on this past performance date and the surveillance interval requirements outlined ,

in Section 1.24 of the Technical Specifications, the latest date the test could have been performed in conformance with Technical Specifications, was June 13, 1982. After the missed surveillance was discovered on June 30 at approximately 1630 hours0.0189 days <br />0.453 hours <br />0.0027 weeks <br />6.20215e-4 months <br />, it was performed on July 1. All thermocouples tested i satisfactorily, except for the thennocouple associated with Safety Valve NR28J (reference Reportable Occurrence Report 50-219/82-39/03L) .

I Apparent Cause of Occurrence ,

The cause of the occurrence was attributed to personnel error and inadequate implementation of procedural controls. The Operations personnel in the Control Room receive the surveillances to be performed for a given week at the start of every week. This package is prepared in advance based on the Master

! Surveillance Schedule. During preparation of the package for the week in I question, the thermocouple surveillance was inadvertantly omitted.

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I Licensee Event Report Page 2 Reportable Occurrence No. 50-219/82-38/03L i

Analysis of Occurrence There are two systems used to detect the inadvertant opening of a safety or relief valve. The primary system uses accelerometers to detect a change in acoustic level or movement which would be indicative of valve opening. This system is also the trip device for the " Safety Valve or Relief Valve Not Closed" annunciator in the Control Room. The secondary system uses thermocouples on the discharge of each valve which would detect the pronounced temperature rise associated with valve opening.

The safety significance of the event is minimized by the fact that~ the primary system was demonstrated operable by performance of the required surveillance tests during this time period.

Corrective Action Af ter discovery of the missed surveillance, the test was performed the following day.

Administrative controls of the implementation of the Master Surveillance Schedule will be reviewed and improved as required.

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