ML18096A649

Special Rept 92-4:on 920318,two Fire Barrier Penetrations Were Impaired to Support Turbine/Generator Design Change Work for Greater than Seven Days.Caused by Outage Related Activities.Penetrations Were Resealed on 920326

ML18096A649
Person / Time
Site:	Salem
Issue date:	04/23/1992
From:	Vondra C Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
92-4, NUDOCS 9204270296
Download: ML18096A649 (3)

Text

• * " Public Service Electric and Gas* company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Dear Sir:

SALEM GENERATING STATION LICENSE NO. DPR-75 DOCKET NO. 50-311 UNIT NO. 2 .SPECIAL REPORT 92-4 April 23, 1992 --------This report addresses Salem Unit 2 fire barrier penetration seal impairments which have not been restored to operable status within seven (7) days. These penetrations have been impaired in support of planned work. 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. MJP:pc Distribution r_;7')u1"9 I,. ".. '..... . The Energy People 9204270296

--920423 PDR ADOCK 05000311 S PDR Sincerely yours, C. A. Vondra General Manager Salem Operations 95-2189 (10M) 12-89

,,. UNIT 2 SPECIAL REPORT .4 PLANT IDENTIFICATION:

Salem Generating Station -Unit 2 Public Service Electric & Gas Company Hancock's Bridge, New 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 Date: 3/25/92 Report Date: 4/23/92 This report was initiated by Incident Report No.92-203. CONDITIONS PRIOR TO OCCURRENCE:

Mode 5 (Cold Shutdown);

6th Refueling Outage in progress DESCRIPTION OF OCCURRENCE:

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.

On March 18, 1992, two (2) fire barrier penetrations were impaired to support turbine/generator design change work (DCP 2EC-3119}.

These penetrations are located in the 100' Elevation Relay Room and the Control Equipment Area. They were repaired on March 26, 1992, eight (8) days after initial impairment.

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 j.7.11 Action "a", were met. ' Salem Unit 2 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 OPERABLE." Salem Unit 2 Action Statement 3.7.11.a states:, "With one (1) or more of the above required fire barrier penetrations inoperable, within one (1) hour either establish a continuous fire watch on at least one (1) side of the affected penetration, or verify the OPERABILITY of fire detectors on at least one (1) side of the inoperable fire barrier and establish an hourly fire watch patrol. Restore the inoperable fire barrier penetration{s) to OPERABLE 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 UNIT 2 SPECIAL REPORT

• DESCRIPTION OF OCCURRENCE: (cont'd) action taken, the cause of the inoperable penetration and plans and schedule for restoring the fire barrier penetration(s) to OPERABLE status." APPARENT CAUSE OF OCCURRENCE:

The cause of the fire barrier penetration impairments was to support outage related activities.

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 reporting requirements of Technical Specification Action Statement 3.7.11.a, pursuant to Technical Specification 6.9.2 since the time between impairment and eventual repair of the fire barrier penetration seals is greater than seven (7) days. Appropriate remedial actions were 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 impaired fire barriers.

The subject fire areas contain detection devices in addition to the roving fire watch patrol. Therefore, a fire in the areas should be detected before it could involve an adjacent area. This occurrence therefore involved no undue risk to the health or safety of the publi*c. CORRECTIVE ACTION: The impaired penetrations were resealed on March 26, 1992. 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.

MJP:pc SORC Mtg.92-049 Gener 1 Manager -Salem Operations