ML20211N441

Followup Rept of fire-rated Assemblies Found Inoperable During Routine Surveillances in May 1986.Twelve Latching Mechanism Failures & 18 Closure Mechanism Failures Found. Followup Rept for June 1986 Expected by 860715

ML20211N441
Person / Time
Site:	San Onofre
Issue date:	06/12/1986
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
NUDOCS 8607030098
Download: ML20211N441 (5)

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SAN ONOFRE NUCLEAR GENERATING STATION !2 ,[ ,7 P. O. BOX 128 _

SAN CLEMENTE. CALIFORNIA 92672 Ll/ tj H E. MORGAN TELEPHONE ,

ST ATION ,d ANAGER (714)368 6241 J June 12, 1986 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 Follow-up Report, Inoperable Fire Doors - May 1986 San Onofre Nuclear Generating Station, Units 2 and 3

Reference:

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

dated May 15, 1986 In accordance with our referenced letter, this submittal provides the follow-up report of fire-rated assemblies (specifically fire doors) found inoperable during routine surveillances in May 1986.

i Fire doors found inoperable during the May routine surveillances are identified in the Attachment and include: 12 latching mechanism failures and 18 closure mechanism failures. No doors were found blocked open in May. As each of these deficiencies was identified, compensatory fire watches, pursuant to Technical Specification 3.7.9, Action Statement 'a', were established.

Door mechanism failures are being corrected on an "as found" basis, i This monthly follow-up report and those sent previously, provide updated information associated with an ongoing condition initially reported in 1983.

The follow-up report covering inoperable fire doors identified in June 1986 will be submitted by July 15, 1986.

8607030098 860612 l PDR ADOCK 05000361 l g PDR <

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Mr. J. B. Martin If you require any additional information, please so advise.

Sincerely, Enclosure cc: F. R. 'Huey (USNRC Senior Resident Inspector, Units 1, 2 and 3)

U. S. Nuclear Regulatory Commission Document Control Desk Institute of Nuclear Power Operations (INPO) i 1

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r ATTACHMENT SOUTHERN CALIFORNIA EDIS0N COMPANY IN0PERABLE FIRE 000RS FOR THE' MONTH OF MAY 1986' SAN ON0FRE NUCLEAR GENERATING STATION UNITS 2 AND 3, DOCKET NOS. 50-361 and 50-362 I. Latching Mechanism Failures:

Number of doors inoperable - 12, as follows:

Door Number Inoperable Operable AR-305 02/22/86 - - -

AC-416 03/06/86 - - -

AC-417 C3/07/86 05/10/86 AC-455 03/08/86 05/11/86 AC-442 04/03/86 - - -

AC-402 04/19/86 05/14/86 AC-213 05/02/86 05/28/86 AC-236 05/08/86 05/11/86 AC-223 05/10/86 05/26/86 AR-502 05/14/86 05/16/86 FH3-103 05/27/86 - - -

DG3-104 05/27/86 - - -

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ATTACHMENT SOUTHERN CALIFORNIA EDISON COMPANY INOPERABLE FIRE DOORS FOR-THE MONTH OF MAY 1986 SAN ON0FRE NUCLEAR GENERATING STATION UNITS 2 AND 3, DOCKET NOS. 50-361 and 50-362-(Continued)

II. Closure Mechanism Failures:

Number of doors inoperable - 18, as follows:

Door Number Inoperable Operable AC-455 04/26/86 05/10/86 AC-417 05/01/86 05/11/86 FH3-404 05/02/86 - - -

AC-442 05/08/86 05/18/86 DG2-104 05/09/86 05/10/86 FH3-207 05/14/86 05/27/86 FH3-304 05/15/86 05/27/86 AC-303 05/15/86 05/26/86 DG3-101 05/15/86 05/16/86 DG3-103 05/15/86 05/16/86 AC-455 05/20/86 05/21/86 AC-417 05/20/86 05/24/86 AR-502 05/21/86 05/22/86 AR-306 05/26/86 05/27/86 AR-502 05/27/86 - - -

DG3-103 05/28/86 05/29/86 DG3-106 05/28/86 05/29/86 DG3-104 05/28/86 05/29/86 l

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.t ATTACHMENT SOUTHERN CALIFORNIA EDISON COMPANY INOPERABLE FIRE DOORS FOR THE. MONTH OF MAY 1986 SAN ONOFRE NUCLEAR GENERATING STATION.

UNITS 2 AND 3, DOCKET NOS. 50-361 and 50-362 (Continued)

III. Doors Blocked Open:

Number of doors blocked open - None f

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