ML13331A389
| ML13331A389 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/26/1990 |
| From: | Nandy F SOUTHERN CALIFORNIA EDISON CO. |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 9004200617 | |
| Download: ML13331A389 (5) | |
Text
Southern California Edison Company 23 PARKER STREET IRVINE. CALIFORNIA 92718 F. R. NANDY March 26, 1990 TELEPHONE MANAGER OF NUCLEAR LICENSING (714) 587-5400 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. 50-206, 50-361 and 50-362 Follow-up Report, Inoperable Fire Doors - February 1990 San Onofre Nuclear Generating Station, Units 1, 2 and 3 The purpose of this letter is to provide a follow-up report for Technical Specification (TS) fire-rated assemblies (i.e., fire doors) found inoperable during routine surveillances in February 1990. This monthly report and previous monthly reports provide updated information associated with the initial 1983 report for Units 2 and 3.
The enclosed report identifies: a) 2 latching mechanism failures and 2 closure mechanism failures for Unit 1 and; b) 34 latching mechanism failures and 13 closure mechanism failures for Units 2 and 3. As each of these deficiencies was identified, compensatory fire watches were established pursuant to TS 3.14.7, Action "A" for Unit 1 or TS 3.7.9, Action "a" for Units 2 and 3.
On February 20, 1990, four Unit 2/3 (common) battery room fire doors (AC-321, AC-322, AC-323, and AC 324) were found blocked open during a routine fire door surveillance walkdown. The doors were blocked open as required by procedures in order to maintain battery room temperatures during maintenance activities in the battery rooms (normal ventilation was not working properly). A compensatory fire watch was not established prior to blocking open the doors.
It should be noted, however, that the doors remained in this condition without the compensatory fire watch for only approximately 10 minutes. The individual responsible for blocking open the doors was identified and appropriate disciplinary action was taken.
7, C) C)~
4 "Ci-:
C) e o"Q C PLu.
Mr. J.
March 26, 1990 If you require any additional information, please let me know.
Very truly yours, Enclosures cc:
C. W. Caldwell (NRC Senior Resident Inspector, Units 1, 2 and 3)
U. S. Nuclear Regulatory Commission Document Control Desk Institute of Nuclear Power Operations (INPO)
ENCLOSURE SOUTHERN CALIFORNIA EDISON COMPANY INOPERABLE FIRE DOORS FOR THE MONTH OF FEBRUARY 1990 SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1, DOCKET NO. 50-206 I.
Latching Mechanism Failures:
Number of doors inoperable - 2, as follows:
Door Number Inoperable Operable S1-FBD-142 02/06/90 02/15/90 S1-FBD-304 02/22/90 02/24/90 II.
Closure Mechanism Failures:
Number of doors inoperable - 2, as follows:
Door Number Inoperable Operable S1-FBD-340 02/19/90 02/24/90 S1-FBD-304 02/22/90 02/24/90 III.
Doors Blocked Open:
Number of doors blocked open - None fdr/feb Page 1 of 3
ENCLOSURE SOUTHERN CALIFORNIA EDISON COMPANY INOPERABLE FIRE DOORS FOR THE MONTH OF FEBRUARY 1990 SAN ONOFRE NUCLEAR GENERATING STATION UNITS 2 AND 3, DOCKET NOS. 50-361 AND 50-362 I.
Latching Mechanism Failures:
Number of doors inoperable - 34, as follows:
Door Number Inoperable Operable AC-428 09/21/89 02/15/90 FH2-101 10/10/89 S2-016 12/07/89 02/08/90 S2-018 12/29/89 02/09/90 C3-406 01/25/90 02/08/90 FH3-101 01/28/90 AC-107 02/01/90 02/06/90 AC-124 02/01/90 02/05/90 AC-131 02/01/90 02/05/90 FH2-303 02/01/90 02/20/90 AC-101 02/02/90 02/27/90 AC-239 02/02/90 DG2-201 02/02/90 02/08/90 AC-242 02/06/90 02/12/90 S2-018 02/06/90 02/09/90 AR-104 02/08/90 02/09/90 FH3-403 02/08/90 02/15/90 AC-107 02/10/90 02/19/90 AC-223 02/13/90 02/20/90 DG2-201 02/13/90 02/24/90 S2-016 02/14/90 02/19/90 AC-351 02/15/90 02/19/90 AC-242 02/20/90 02/23/90 AC-310 02/20/90 02/23/90 AC-221 02/22/90 02/23/90 AC-101 02/25/90 AC-127 02/25/90 FH2-303 02/25/90 AC-108 02/27/90 02/28/90 AC-428 02/28/90 AR-501 02/28/90 C3-406 02/20/90 DG2-201 02/20/90 02/22/90 S2-013 02/20/90 02/23/90 fdr/feb Page 2 of 3
ENCLOSURE SOUTHERN CALIFORNIA EDISON COMPANY INOPERABLE FIRE DOORS FOR THE MONTH OF FEBRUARY 1990 SAN ONOFRE NUCLEAR GENERATING STATION UNITS 2 AND 3, DOCKET NOS. 50-361 AND 50-362 II.
Closure Mechanism Failures:
Number of doors inoperable - 13, as follows:
Door Number Inoperable Operable AC-428 10/10/89 02/12/90 S2-016 12/07/89 02/08/90 AC-119 12/27/89 02/19/90 C3-406 02/06/90 02/08/90 S2-016 02/14/90 02/19/90 AC-351 02/15/90 02/19/90 AC-264 02/17/90 02/20/90 AC-310 02/17/90 02/23/90 AC-340 02/17/90 02/20/90 AC-221 02/22/90 02/23/90 AC-1 19 02/26/90 AC-428 02/28/90 AR-501 02/28/90 III. Doors Blocked Open:
Number of doors blocked open - 4, as follow:
Door Number Date Found Blocked Open AC-321 02/20/90 AC-322 02/20/90 AC-323 02/20/90 AC-324 02/20/90 fdr/feb Page 3 of 3