05000338/LER-1982-018, Forwards LER 82-018/03L-0.Detailed Event Analysis Encl

Forwards LER 82-018/03L-0.Detailed Event Analysis Encl

ML20052G613
Person / Time
Site:	North Anna
Issue date:	05/03/1982
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052G614	List: 05000338/LER-1982-018, Forwards LER 82-018/03L-0.Detailed Event Analysis Encl 05000338/LER-1982-018-03, /03L-0:on 820408,containment Personnel Hatch Inner Door Seals Failed Surveillance Test & Outer Door Seals Subsequently Failed.Caused by Excessive Drying of Seal Matl. Inner Door Seal Lubricated & Outer Door Seal Replaced
References
N-82-039, N-82-39, NUDOCS 8205180511
Download: ML20052G613 (2)

LER-1982-018, Forwards LER 82-018/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3381982018R00 - NRC Website

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O VIRGINI A ELECTRIC AND POWE A CCa#P A NY T H ANN A PO*ER ST A TION o.Boxb2f,}h i

MINER AL, VIRGtNf A 23117

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May 3, 1982 Mr. James P. O'Reilly, Regional Administrator Serial No.

N-82-039 Office of Inspection and Enforcement N0/SBE:ll U. S. Nuclear Regulatory Commission Docket No. 50-338 Region II 101 Marietta Street, Suite 3100 License No.

NPF-4 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Pursuant to North Anna Power Station Technical Specifications, the Virginia Electric and Power Company hereby submits the following Licensee Event Report for North Anna Unit No.

1.

Report No.

Applicable Technical Specifications LER 82-018/03L-0 T.S. 6.9.1.9.b This report has been reviewed by the Station Nuclear Safety and Operating Committee and will be forwarded to Safety Evaluation and Control for their review.

i Very Truly Yours,

/

[

/V W. R. Cartwright Station Manager Enclosures (3 copies)

Mr. Richard C. DeYoung, Director (30 copies) cc:

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission l

Washington, D. C. 20555 Mr. Norman M. Italler, Director (3 copies)

Office of Management and Program Analysis ON g2051805u oppC s

gs eL s - d'

Virginia Electric and Power Company North Anna Power Station, Unit No. 1

Attachment:

Page 1 of I Docket No. 50-338 Report No. LER 82-018/03L-C

Description of Event

On April 8, 1982, the containment personnel access hatch failed to pass the periodic surveillance test.

The inner door seals were lubricated and retested satisfactorily.

The outer door was closed and when tested failed to meet the Acceptance Criteria of the surveillance test.

The outer door seals were replaced and retested satisfactorily. This event is contrary to T.S. 3.6.1.3 and reportable pursuant to T.S. 6.9.1.9.b.

Probable Consequences of Occurrence Periodic surveillance of the containment personnel access hatch is performed to assure that the overall hatch leakage does not become excessive during the interval between air leakage tests. The slight leakage encountered was into the containment.

Seal repair on the hatch doors is considered a routine maintenance item.

Since the leakage was minimal and the seals were repaired or replaced within the Action Statement time frame, the health and safety of the public were not affected.

Cause of Event

This event was caused by excessive drying of the seal material on l

the personnel hatch doors. This leads to cracking and improper mating of seal surfaces.

l

Immediate Corrective Action

l The inner docr seal was lubricated and retested.

The outer door seal was replaced.

l Scheduled Corrective Action No - further action required.

Actions Taken to Prevent Recurrence This is considered a routine failure, therefore no further actions are necessary.

Generic Implications These door seals are generic to North Anna Units 1 and 2.