ML18095A614
| ML18095A614 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 11/14/1990 |
| From: | Labruna S Public Service Enterprise Group |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 90-06, 90-6, NUDOCS 9011290304 | |
| Download: ML18095A614 (4) | |
Text
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.... .i Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station.
November 14; 1990 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Dear Sir:
SALEM GENERATING STATION LICENSE NO. DPR-70 DOCKET NO. 50-272 UNIT NO. 1 SPECIAL REPORT 90-6 This Special Report addresses fire barrier penetration seal impairments which have not been restored to functional status within seven (7) days. This report has been prepared in accordance with the reporting requirements of Technical Specification Action Statement 3.7.11.a pursuant to Technical Specification 6.9.2.
Sincerely yours,
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General Manager -
Salem Operations MJP:pc Distribution I.
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UNIT 1 SPECIAL REPORT ~6
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Salem Generating Station - Unit 1 Public Service Electric & Gas Company Hancock's Bridge, Hew Jersey 08038 IDENTIFICATION OF OCCURRENCE:
Technical Specification 3.7.11; Fire.Barriers Impaired For Greater Than Seven (7) Days in Support of Planned Work Event Dates: 10/22/90 and 10/24/90 Report Date: 11/14/90 This report was initiated by Incident Report Hos.90-773 and 90-782.
CONDITIONS PRIOR TO OCCURRENCE:
Mode 1 (Power Operation)
DESCRIPTION OF OCCURRENCE:
As per Technical Specification Action Statement 3.7.11.a, a Special Report is required when fire barrier penetration seals are impaired for greater than seven (7) days. This report satisfies this requirement.
The subject fire barrier impairments were initiated in support of design changes. Normally, the planning of design changes include repair of impaired penetrations within seven (7) days. However, to fully support the specific design change effort (identified in this report), the subject penetrations could not be repaired within seven (7) days.
On October 15, 1990 two (2) fire barrier penetrations were impaired in support of design change work (i.e., DCP lSC-2161). On October 17, 1990, eleven (11) fire barrier penetrations were also impaired in support of design change work (i~e., DCP lSC-2160 and lSC-2161).
These penetrations are located as follows:
Date of Ho. of Location Impairment Penetrations 10/15/90 1 84' El. 11 Spent Fuel Pit Heat Exchanger & Pump Area 1 84' El. Control Area 11 Transformer Bus Room 10/17/90 1 84' El. 11 Spent Fuel Pit Beat Exchanger & Pump Area 1 122' El. 11 Control Equipment Room 1 Relay Room 6 84' El. Control Area 11 Transformer Bus Room 1 78' Electrical Penetration Area 1 64' Laundry, Shower, and Chemical Pump
& Tank Room
DESCRIPTION OF OCCURRENCE: (cont'd)
An hourly roving fire watch had been previously established for the above fire areas due to other fire protection concerns. Therefore, the requirements of Technical Specification Action Statement 3.7.11.a, were met.
Technical Specification 3.7.11 states:
"All fire penetrations (including cable penetration barriers, fire doors and fire dampers), in fire zone boundaries, protecting safety related areas shall be functional."
Action Statement 3.7.11.a states:
"With one (1) or more of the above required fire barrier penetrations non-functional, within one hour either establish a continuous fire watch on at least one side of the affected penetration, or verify the OPERABILITY of fire detectors on at least one side of the non-functional fire barrier and establish an hourly fire watch patrol. Restore the non-functional fire barrier penetration(s) to functional status within 7 days or, in lieu of any other report required by Specification 6.9.1, prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 30 days outlining the action taken, the cause of the non-functional penetration and plans and schedule for restoring the fire barrier penetration(s) to functional status."
APPARENT CAUSE OF OCCURRENCE:
The root cause of the impairment of the fire barrier penetration was to support design change work.
ANALYSIS OF OCCURRENCE:
The functional integrity of fire barrier penetrations ensures that fires will be confined or adequately retarded from spreading to
. adjacent portions of the facility. This design feature minimizes the possibility of a single fire involving several areas of the facility. The fire barrier penetration seals are a passive element in the facility fire protection program and are subject to periodic inspections. This report satisfies the reporting requirements of Technical Specification Action Statement 3.7.11.a pursuant to Technical Specification 6.9.2 since the time between discovery and eventual repair of the fire barrier impairments is greater than seven (7) days. Appropriate remedial actions were already in place in accordance with the requirements of Technical Specification Action Statement 3.7.11.a to establish an hourly roving fire watch patrol for the impaired fire barriers once the impairments were identified.
The subject fire areas contain detection devices in addition to the roving fire watch patrol. Therefore, it is reasonable to assume that a fire in the areas would be detected before it could involve an adjacent area. This occurrence therefore involved no undue risk to the health or safety of the public.
UNIT 1 SPECIAL REPORT. 9.6
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- CORRECTIVE ACTION:
The repair of the penetrations was not accomplished within seven (7) days due to the time required to support the associated design change work. Upon completion of the design change work, the penetrations will be sealed. The hourly fire watch, as addressed in the Description of Occurrence section, will continue until all fire protection concerns associated with these areas are resolved.
General Manager -
Salem Operations MJP:pc SORC Mtg.90-154