05000219/LER-1982-030, Forwards LER 82-030/01T-0.Detailed Event Analysis Encl

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Forwards LER 82-030/01T-0.Detailed Event Analysis Encl
ML20054K713
Person / Time
Site: Oyster Creek
Issue date: 06/22/1982
From: Fiedler P
GENERAL PUBLIC UTILITIES CORP.
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20054K714 List:
References
NUDOCS 8207060086
Download: ML20054K713 (3)


LER-2082-030, Forwards LER 82-030/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
2192082030R00 - NRC Website

text

GPU Nuclear M N ked ive . New Jersey 08731 609-693-6000 Writer's Direct Dial Number:

June 22, 1982 Mr. Penald C. Ilaynes, Adminis trator Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Ilaynes:

Subject:

Oyster Creek Nuclear Generating Station Docke t No. 50-219 Licensee Event Report Reportable Occurrence No. 50-219/82-30/0lT This letter forwards three copies of a Licensee Event Report to report Reportable Occurrence No. 50-219/82-30/0lT in compliance with paragraph 6.9.2.a.2 of the Technical Specifications.

Very truly yours,

/Md i Peter'B. Fiedler Vice President & Director Oyster Creek PBF:Ise Enc losure s c c: Director (40 copies)

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

Of fice of Management Inf ormation and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 NRC Resident Inspector (1)

Oyster Creek Nuclear Generating Station Forked River, NJ 08731 8207060086 820622 DR ADOCK 05000219 PDR g ), )

/

GPU Nuclear is a part of the General Public Utilities System y&

OYSTER CREEK NDCLEAR GENERATING STATION Forked River, New Jersey 08731 Licensee Event Report Reportable Occurrence No. 50-219/82-30/01T Report Date June 22, 1982 Preliminary Report Date June 8,1982 Occurrence Date May 28,1982 Identification of Occurrence The stack gas was not continuously monitored as required by Technical Specification 3.6.A.3, due to an electrical trip of the Stack Gas Sample System.

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

No te: This event was not considered immediately reportable until June 6,1982.

Conditions Prior to Occurrence Power: Reactor: 498 MWt Electrical: 0 MWe The plant was in a routine startup mode during this occurrence.

Description of Occurrence On May 28, 1982 at approximately 10:55 A.M., the 'B' Stack Gas Sample Pump was electrically being removed from service for replacement. The pump was de-energized at the source feed to the Stack Gas Panel. The sample flow through the inservice ' A' Stack Gas Sample Train decreased to zero SCFM. The source feed was immediately energized and the ' A' Stack Gas Sample Train flow was resumed.

Apparent Cause of Occurrence Circuit Breaker No. 3 at Instrument Panel 4C feeds the 'B' Stack Gas Sample Pump and the control power to the Stack Gas Sample System. In preparation for replacement of the 'B' Stack Gas Sample Pump, this breaker was opened which secured power to the 'B' pump; however, it also de-energized both sample system valves. The operator who prepared the tagging instructions was unaware of the control power feed. A local circuit breaker at the Stack Gas Sample Panel (fed from Breaker No. 3 at Instrument Panel 4C), should have been opened to de-energize the 'B' Stack Gas Sample Pump.

2

Lic:ntoo Eysnt Report Page 2 Reportable Occurrence No. 50-219/82-30/01T In addit .on, Special Procedure No.82-059, " Stack Gas Sample Pump 'B' Replacement, which included tagging instructions, was not referenced in the tagging request given to Operations.

Analysis of Occurrence The Stack Gas Sampling System monitors radioactive gaseous effluents released from the stack. Due to the short period of time that the sample system was inoperable, the safety significance of this event ic considered minimal.

Corrective Action The stack gas sample flow was immediately returned to normal by re-energizing the breaker. The proper breaker was then de-energized as required to perform the pump change out.

The plant tagging request form will be revised to reference the procedure number to be used for maintenance or modification work. If the procedure contains tagging, valving or draining instructions, this will be identified on the tagging request.

Additionally, this event will be made part of the required reading list for all operators.

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