05000361/LER-1982-064, Forwards LER 82-064/03L-0.Detailed Event Analysis Submitted

Forwards LER 82-064/03L-0.Detailed Event Analysis Submitted

ML20064M718
Person / Time
Site:	San Onofre
Issue date:	08/13/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20064M721	List: 05000361/LER-1982-064, Forwards LER 82-064/03L-0.Detailed Event Analysis Submitted 05000361/LER-1982-064-03, /03L-0:on 820716,containment Personnel Access Airlock Jammed in Open Position.Caused by Linkage Maladjustment Due to Heavy Personnel Traffic Associated W/Plant Startup Between Initial Fuel Load & Criticality
References
NUDOCS 8209080086
Download: ML20064M718 (2)

LER-1982-064, Forwards LER 82-064/03L-0.Detailed Event Analysis Submitted

Event date:
Report date:
3611982064R00 - NRC Website

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.g Southern Califamia Edison Company O? Pm ;g e.,

SW S AN ONOFRE NUCLE AR GENER ATING STA TION

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S AN C LEMEN T E. C A LIFORNI A 92672 8

H. B. R AY -

T E L EPHONE August 13, 1982

< " di "2 ma Sr.T ON u.N ae a i

f U. S. Nuclear Regulatory Commission j

Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention:

Mr. R. H. Engelken, Regional Administ'rator

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Subject: Docket No. 50-361 30-day Report Licensee Event Report No.82-064 San Onofre Nuclear Generating Station, Unit 2 E

l Pursuant to Technical Specification 6.9.1.13.b, this letter provides the written report and completed Licensee Event Report (LER) form for an event involving Limiting Condition for Operation (LCO) 3.6.1.3.

On July 16, 1982, while operating in bbde 3, the inner door of the containment personnel access airlock became jammed in the open position.

l In accordance with Action Statement a.1 of the LCO, the outer door of the airlock was maintained in the closed position while personnel entering r

containment worked to free the operating mechanism.

5 Operability of the inner door w s achieved within one hour after adjustments l

to the operating linkage were made. The high volume of traffic through l

the airlock doors during the period between initial fuel load and initial criticality is considered to be the primary cause of this occurrence.

Since initial criticality, the number of containment entries has been i

reduced to the absolute minimum and repetition of this occurrence is not anticipated. A complete overhaul of the airlock door mechanism is t

F scheduled for the first shutdown to further reduce the probability of recurrence.

E [f there are any questions regarding the above, please contact me.

Sincerely, L

Enclosure: LER 82-064 i

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8209080086 820013 i

PDR ADOCK 05000361 1

i R. H. Engelken August 13, 1982 cc:

Mr. A. E. Chaffee (USNRC Resident inspector, San Onofro Unit 2)

U. S. Nuclear Regu'atory Commission Office of inepection and Enforcement U. S. Nuclear Regulatory Commission Office of Management Information & Program Control Institute of Nuclear Power Operations