05000272/LER-1981-034, Forwards LER 81-034/03L-0.Detailed Event Analysis Encl

Forwards LER 81-034/03L-0.Detailed Event Analysis Encl

ML18086A298
Person / Time
Site:	Salem
Issue date:	04/14/1981
From:	Uderitz R Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18086A299	List: 05000272/LER-1981-034, Forwards LER 81-034/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-034-03, /03L-0:on 810210,spent Fuel Pit Telltale Drain 6 Found Leaking.Caused by Defective Seams.Plate Welded Over Defect in Side Wall.Floor Seam Defects Sealed
References
NUDOCS 8104240534
Download: ML18086A298 (3)

LER-1981-034, Forwards LER 81-034/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981034R00 - NRC Website

text

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Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 Phone 201/430-7000 April 14, 1981 Mr. Boyce H. Grier, Director U.S. Nuclear Regulatory Commission Off ice of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-34/03L During further examination of leakage in the Spent Fuel Pit during the installation of high density fuel racks, and in keeping with the philosophy of a previous report, it was determined that this event was reportable.

Therefore, pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 81-34/03L.

Sincerely yours,

/&;~~;?'

R. A. UderiM General Manager -

Nuclear Production CC:

Director, Office of Inspection and Enforcement (JO copies)

Director, Office of Management Information and Program Control

( 3 copies) 8 10.4 2.405J't/~.'

PS~G Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 Phone 201/430-7000 April 14, 1981 Mr. Boyce H. Grier, Director U.S. Nuclear Regulatory Commission Off ice of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-34/03L During further examination of leakage in the Spent Fuel Pit during the installation of high density fuel racks, and in keeping with the philosophy of a previous report, it was determined that this event was reportable.

Therefore, pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 81-34/03L.

Sincerely yours,

/!&&~;;/*

R. A. 0 di'fi f z._:"'.-

Gener al Manager -

Nuclear Production CC:

Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies)

Report Number:

Report Date:

Occurrence Date:

81-34/03L April 14, 1981 2/10/81 Facility:

Salem Generating Station -

Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Leak in Spent Fuel Pit CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 -

Rx Power 100% - Unit Load 1130 MW DESCRIPTION OF OCCURRENCE:

During an inspection of the Sp8nt Fuel Pit, a leak of approximately 2.7 liters/hour was discovered at telltale drain number 6.

The Spent Fuel Pit level has been maintained at 23 feet of water over the top of the irradiated fuel assemblies seated in the storage racks in accordance with Technical Specification 3.9.11 since the occurrence.

This occurrence constituted an abnormal degradation of a system designed to contain radioactive material resulting from the fission process IAW Technical Specification 6.9.1.9.d.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The apparent cause of the leak was leaking welded seams.

ANALYSIS OF OCCURRENCE:

Various non-destructive examinations were utilized to determine the cause of the leakage.

Four areas with weld flow indications were identified:

one 3" defect in a side wall: three 1/2" defects in the floor seams.

CORRECTIVE ACTION

A stainless steel plate was welded over the defect in the side wall.

Epoxy was used to seal the floor seams.

Average leakage is now approximately 30 ml/hr.

Inspection of the remaining seams is planned when the fuel racks are relocated.

A supplemental report will address the results of the inspection and any corrective action taken.

FAILURE DATA:

Not Applicable Prepared By W. J. Steele Manager -

S"alem'Generating Station SORC Meeting No.

81-27