05000362/LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

ML20070L637
Person / Time
Site:	San Onofre
Issue date:	12/17/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20070L640	List: 05000362/LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted 05000362/LER-1982-002-03, /03L-0:on 821119,during Fuel Loading Operations, Water Observed Leaking Through Equipment Hatch Seal Into Containment.Caused by Existing Gap Around Perimeter of Hatch.Bolts Retightened
References
82-458, NUDOCS 8301030227
Download: ML20070L637 (2)

LER-1982-002, Forwards LER 82-002/03L-0.Detailed Event Analysis Submitted

Event date:
Report date:
3621982002R00 - NRC Website

text

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0 SouUsern California Edison Company 12Sy SG S AN ONOFRE NUCLE AR GENER A TING S T A TION

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P.O. B O X 128 S A N C LEMEN T E. C A LIFORNI A 92672 ST A TION M AN AGE 01 i F 3 414 92-F F00 December 17, 1982 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention:

Mr. R. H. Engelken, Regional Administrator

Dear Sir:

Subject:

Docket No. 50-362 30-Day Report Licensee Event Report No.82-002 San Onofre Nuclear Generating Station, Unit 3 This submittal is in accordance with the reporting requirements of Section 6.9.1.13.b of Appendix A to Facility Operating License NPF-15.

It describes a reportable occurrence involving Limiting Condition for Operation (LCO) 3.9.4 associated with containment building penetrations.

A completed copy of LER 82-002 is enclosed.

On November 19,1982 at 0128, during initial fuel loading operations, water was observed to be leaking through the equipment hatch seal into Containment. As required by the Action Statement associated with LC0 3.9.4 and Emergency Operating Instruction S023-3-5.11, core alterations were immediately suspended.

Subsequent investigation revealed the existence of a gap around the perimeter of the hatch. The hatch had been secured by four bolts as required by LC0 3.9.4 but no specific guidance had been available to maintenance personnel for equipment hatch installation other than to put it in place and tighten the bolts.

The four bolts were re-tightened at 0243 on November 19, 1982, the hatch visually verified closed and fuel loading operations we:e resumed.

As corrective action to prevent recurrence, specific guidance for equipment hatch closure when preparing for core alterations will be developed and governing procedures will be revised by March 1,1983.

8301030227 821217 PDR ADOCK 05000362 MM 62/155

L R. H. Engelken December 17, 1982 This was an isolated occurrence and there was no effect on public health and safety.

If you have any questions regarding the above, please contact me.

Sincerely, H 0 /19 / 7y /**4

Enclosure:

LER 82-002 cc:

A. E. Chaffee (USNRC Resident Inspector, San Onofre Units'2 & 3)

U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Office of Management Information and Program Control Institute of Power Operations