05000219/LER-1979-040, Forwards LER 79-040/03L-0

Forwards LER 79-040/03L-0

ML19260B144
Person / Time
Site:	Oyster Creek
Issue date:	11/30/1979
From:	Ross D JERSEY CENTRAL POWER & LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19260B145	List: 05000219/LER-1979-040, Forwards LER 79-040/03L-0 05000219/LER-1979-040-03, /03L-0:on 791102,NRC Audit Noted Standby Gas Treatment Sys Charcoal Filters Not Tested Per Tech Spec. Caused by Not Including Methyl Iodide Removal Efficiency Test on Master Test Schedule & in-plant Procedure
References
NUDOCS 7912070323
Download: ML19260B144 (3)

LER-1979-040, Forwards LER 79-040/03L-0

Event date:
Report date:
2191979040R00 - NRC Website

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Jersey Central Power & Ught Company h

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Madison Avenue at Punch Bowl Road Momstown, New Jersey 07960 (201)455-8200 November 30, 1979 Mr. Boyce H. Grier, Director Office of inspection and Enforcement Region !

United States Nuclear Regulatory Comission 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

Subject:

Oyster Creel iuclear Generating Station Docket No. 50-219 Licensee Event Report Reportable Occurrence No. 50-219/79-40/3L-0 This letter forwards three copies of a Licensee Event Report to report Reportable Occurrence No. 50-219/79-40/3L-0 in compliance with paragraph 6.6.1.a of the Technical Specifications.

Very truly yours, d

w Donald A. Ross, Manage:

Generating Stations-Nuclear es Enclosures cc:

Director (40 copies)

Office of Inspection and Enforcement United States Nuclear Regulatory Comission Washington, DC 20555 Dire.ctor (3 wopies)

Office of Management and Program Analysis United States Nuclear Regulatory Comission Washington, DC 20555 cal 292 s

313 7912070 A

Jersey Central Power & Light Company is a Member of the General Pubhc Ut.hties C %m

Jeraey Central Power & Ught Company y

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Madison Avenue at Punch Bowl Road J

Momstown, New Jersey 07960 (201)455-8200 OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Licensee Event Report Reportable Occurrence No. 50-219/79-40/3L-0 Report Date November 30, 1979 Occurrence Date November 2, 1979 Identification of Occurrence Violation of the Technical Specifications, paragrapn 4.5.K.1.a(2), which requires surveillance testing of the Standby Gas Treatment System charcoal filters for radioactive methyl lodine uranoval efficiency at 18-month intervals.

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 operating at steady state power. The major plant parameters at the time of the occurrence were:

Power:

Reactor,1768.4 MWt 2-nerator, 602 MWe Flow:

Recirculation, 14.5 x 104 gpm Feedwater, 6.6 x 106 lbm/hr 4

Stack Gas:

3 5 x 10 pCl/sec Description of Occurrence On Friday, November 2,1979, during an NRC audit of surveillance testing records, it was noted that the Standby Gas Treatment System charcoal filters were not being tested in full compilance with Section 4.5.K.4.a.of the Technical Specifications.

Specifically, the Technical Specifications require that the filters be tested for both methyl iodide and halogenated hydrocarbin removal efficiency. Contrary to these requirements, only testing for Salogenated hydrocarbons had been performed during the previous surveillance interval (July 1977 to January 1979).

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l I Jersey Central Power & Ught Company is a Member of the General Pubhc Ut4hties System

Reportable Occurrence No. 50-219/79-40/3L-0 Page 2 November 30, 1979

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One sample filter cartridge was removed from each filter train and was tested for methyl lodide removal efficiency. The testing, which was completed on November 27, 1979, demonstrated removal efficiencies of 97.5% for filter train

1. 1 and 92.8% for filter train #2.

It should be noted that the requirements for methyl iodide removal efficiency testing became effective March 22, 1976.

Modifications to the system were made in July 1977 and adequate methyl iodide removal capability was demanstrated at that time.

Apparent Cause of Occurrence The cause of this event is attributed to personnel error for failure to include the methyl iodide removal efficiency testing on the Master Surveillance Test Schedule and in plant procedures.

Analysis of Occurrence The safety significance of the missed surveillance test is considered minimal since the methyl lodide removal efficiency testing yielded satisfectory results.

It should be noted that the halogenated hydrocarbon and nethyl Iodide removal tests are both measures of the degree of filter depletion.

Since the halogenated hydrocarbon testing indicated negligable filter depletion, a high degree of confidence existed that the methyl Iodide removal efficiency was also negligably affected.

Consequently, the Standby Gas Treatment System was considered operable.

Corrective Action

The methy1' iodide removal efficiency testing has been added to the Master Surveillance Schedule and procedures will be modified to include the testing requirements.

Failure Data Not applicable.

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