05000219/LER-1982-059, Forwards LER 82-059/03L-0.Detailed Event Analysis Encl

Forwards LER 82-059/03L-0.Detailed Event Analysis Encl

ML20028C747
Person / Time
Site:	Oyster Creek
Issue date:	12/27/1982
From:	Fiedler P GENERAL PUBLIC UTILITIES CORP.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028C748	List: 05000219/LER-1982-059, Forwards LER 82-059/03L-0.Detailed Event Analysis Encl 05000219/LER-1982-059-03, /03L-0:on 821124,reactor Circulation Pump a Taken Out of Svc.Caused by Indications of Leaking Seals.Seal Confirmed to Be Leaking During Subsequent Shutdown. Cartridge Assembly Replaced
References
NUDOCS 8301140062
Download: ML20028C747 (3)

LER-1982-059, Forwards LER 82-059/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2191982059R00 - NRC Website

text

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

December 27, 1982 Mr. Ronald C. Haynes, Administrator Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Haynes:

Subject: Oyster Creek Nuclear Generating Station Docket No. 50-219 Licensee Event Report Reportable Occurrence No. 50-219/82-59/03L This letter forwards three copies of a Licensee Event Report (LER) to report Reportable Occurrence No. 50-219/82-59/03L in compliance with paragraph 6.9.2.b.2 of the Technical Specifications.

Very truly yours, l

O L.h W.

terB.Fiedlf ice President M Director Oyster Creek PBF:lse Enclosure s ec: Director (40 copies)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.

20555 Director (3)

Of fice 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 8301140062 821227 PDR ADOCK 05000219 S

PDR GPU Nuclear is a part of the General Pubhc Utihties System

%d

OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Licensee Event Report Reportable Occurrence No. 50-219 /82-59/03L Report Date December 27, 1982 Occurrence Date November 24, 1982 Identification of Occurrence "A" reactor recirculation pump was taken out of service.

"A" loop was lef t idle but not isolated which is a limiting condition for operation permitted by Technical Specifications, paragraph 3.3.F.2.

This event is considered to be a reportable occurrence as defined in the Technical Specifications, paragraph 6.9.2.b.2.

Conditions Prior to Occurrence The plant was operating at steady state power Reactor Power

- 1000 MWt 306 MWe Generator Output Mode Switch Position - Run Description of Occurrence "A" reactor recirculation pump was taken out of service. The suction and bypass valves remained open.

Apparent Cause of Occurrence "A" reactor recirculation pump was manually removed from service due to mechanical seal leakage, as indicated by seal cavity pressure readings and flow alarms. This action was taken due to an increasing drywell unidentified leak rate and the suspect indication exhibited in "A" recirculation pump seal.

Analysis of Occurrence Reactor operation is permitted with four recirculation loops in service provided the idle recirculation loop is not isolated f rom the reactor vessel.

As specified in Technical Specification 3.10.A, 4-loop operation imposes more restrictive MAPLHGR limits. The more restrictive limits were satisfied at the time of this occurrence, thus there is no safety significance.

l

e Licensee Event Report Page 2 Reportable Occurrence No. 50-219/82-59/03L

Corrective Action

During a subsequent shutdown, "A" reactor recirculation pump seal was confirmed to be leaking and the seal cartridge assembly was replaced.

"A" reactor recirculation pump has been returned to service.

Failure Data None l

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