ML20081H627

RO 83-067:nonconformance Repts Documenting Missing or Incorrectly Installed Fire Blankets on Cable Raceways Identified.Fire Watches Established.Investigation Continuing.Next Rept by 831111

ML20081H627
Person / Time
Site:	San Onofre
Issue date:	10/28/1983
From:	Haynes J SOUTHERN CALIFORNIA EDISON CO.
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-83-067, RO-83-67, NUDOCS 8311070530
Download: ML20081H627 (2)

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m G EIVED Southern California Edison Company h?

5 A N ONOF R E NUC LE A R GENE R A11NG ST A TION

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P.O. BOA 128 SAN C LEMEN T E . C A LIFORNI A 92672 ..

m October 28, 1983 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, suite 210 Walnut Creek, California 94596-5368 Attention: Mr. J. B. Martin, Regional Administrator

Subject:

Docket Nos. 50-361 and 50-362 Prompt Report License Conditions 2.C.(14)a and 2.C.(12)a San Onofre Nuclear Generating Station, Units 2 and 3

Reference:

Letter, H. B. Ray (SCE) to J. B. Martin (NRC),

LER 83-067, Revision 1 (Docket No. 50-361),

dated September 6, 1983 Pursuant to License Condition 2.G to Facility Operating Licenses NPF-10 and NPF-15 for San Onofre Units 2 and 3, respectively, this P submittal provides written confirmation of our notification to the NRC on October 28, 1983, of a reportable occurrence associated with fire protection cable separation criteria.

License Conditions 2.C.(14)a and 2.C.(12)a for Units 2 and 3, respectively, require that SCE maintain in effect and fully implement the Fire Protection Plan as delineated in the Fire Hazards Analysis (FHA). Section I.E.1 of the FHA, states that cable separation criteria shall be in accordance with USNRC Regulatory Guide 1.75, " Physical Independence of Electrical Systems."

Our continuing review of the plant design for compliance with the

- FHA, described in the referenced letter, has included review of Nonconformance Reports (NCR's) written since the issuance of Operating Licenses for Units 2 and 3. Two, and possibly a third, NCR's have been identified which document either missing or i

8311070530 831028 PDR S ADOCK 05000361 i PDR , t) " .pY

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., Mr. J. B. Martin October 28, 1983 incorrectly installed fire blankets on cable raceways which did not meet the applicable separation criteria of Regulatory Guide 1.75. As many as five locations involving eight raceways and two junction boxes were identified in these NCR's. Compensatory fire watches have been in place in each unit where cable separation criteria were not met and will remain in effect until corrective measures are implemented.

SCE believes that it is not the intent of License Condition 2.G to require the reporting of incidents such as these and will seek clarification from NRR. We are continuing our investigation into this matter and will submit the required 14-day follow-up report by November 11, 1983.

If you have any questions regarding the above, please so advise.

Sincerely, f)h, &

J. G. HAYNES STATION MANAGER cc: A. E. Chaffee (USNRC Resident Inspector, Units 1, 2 and 3)

J. P. Stewart (USNRC Resident Inspector, Units 2 and 3) b O