ML18096A650

Special Rept 92-2:on 920324,0414 & 15,fire Barriers Impaired for Greater than Seven Days in Support of Planned Work. Hourly Fire Watch Will Continue Until Fire Protection Concerns Associated W/Areas Resolved

ML18096A650
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
92-2, NUDOCS 9204270364
Download: ML18096A650 (4)

Text

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" Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station April 23, 1992 U. s. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Dear Sir:

SALEM GENERATING STATION

~ICENSE NO. DPR-70 DOCKET NO. 50-272 UNIT NO. 1 SPECIAL REPORT 92-2 This report addresses a fire barrier impairment which had not been

• restored to func~ional 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. It is being submitted within thirty (30) days as required.

C. A. Vondra General Manager -

Salem Operations MJP:pc Distribution

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9204270364 920423 95*2189 i10M) 12-89 PDR ADOCK 05000272 s PDR

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UNIT 1 SPECIAL REPORT 9"2 PLANT IDENTIFICATION:

Salem Generating Station - Unit 1 Public Service.Electric & Gas Company.

Hancock's B~idge, 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 Dates: 3/24/92, 4/14/92 and 4/15/92 Report Date: 4/23/92 This report was initiated by Incident Report Nos. 92-190~ 92-229 and 92-233.

CONDITIONS PRIOR TO OCCURRENCE:

3/17/92: Mode 1 Reactor Power 100% - Unit Load 1160 MWe 4/07/92: Mode 5 (Cold Shutdow:n); lOt h Refueling Outa.ge in progress DESCRIPTION OF OCCURRENCE:

Pe~ 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. T~is report satisfies this requirement.

The subject fire barrier impairments were ini'tiated in support of design changes and other Salem Unit 1 outage activities. Normally, the planning of penetration impairments includes their repair within seven (7) days. However, to fully support the work identified in this report, the penetrations could not be repaired within seven (7) days.

on'March 17, 1992, two (2) fire barrier penetrations were imp~ired in support of Service Water System modifications. On April 7, 1992, ten (10) fire barrier penetrations were impaired also in support of Service Water System modifications. On April 8, 1992, five (5) fire barrier penetrations were impaired in support of Service Water System pipe replacement for the Auxiliary Building Room Coolers. These penetrations are located as follows:

Date of No. of Purpose Location Impairment Penetrations 3/17/92 1 SW System 122' El. Aux. Bldg.

Modifications Boric Acid Tank Room Floor Plate 1 84' El. Aux. Bldg.

Cont. Spray Pump, Tank Area Floor Plate

UN'IT 1 SPECIAL REPORT 9 2 DESCRIPTION OF OCCURRENCE: *{cont'd)

Date of No. of Purpose Location Impairment Penetrations 4/7/92 10 SW project support 78' 'El. Mechanical Penetrations to

• containment 4/8/92. 1 SW pipe replacement #12 RHR Pump Room 2 Laundry, Shower, &

Chemical Pump & Tank Room 2 Nos. 11 & 12 Safety*

Injection Pump Room 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 3.7.11 Action "a", were met.

Technical Specification 3.7~11 states:

"All fire penetrations (including cable penetration barriers, fire doors ~hd fire dampers), in fire zone boundaries, protecting safety related areas shall be functional."

Action Statemerit 3.7.11.a states:

"With one (1) or more of the above required fire.barrier penetrations non-functional, 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 non-functional fire barrier arid establish ari 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 plaris and schedule for restoring the fire bar~ier penetration(s) to functional status."

APPARENT CAUSE OF OCCURRENCE:

The cause of the fire barrier penetration impairments.is 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 portion~ of the facility. This design feature minimizes the possibility of a single fire involving several areas of the facility.

The fire barr.-ier penetration seals are a passive element in the

• UNIT 1 SPECIAL REPORT 9-2 . .

ANALYSIS OF OCCURRENCE: (cont'd) 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 penetrations is greater than seven (7) days~ Appropriate remedial actions were already in place, in accordance with the requirements of Technical Specification Actiori 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 public.

CORRECTIVE ACTION:

The repair of the planned impaired penetrations was not accomplished within seven (7) days due to the time required to complete work. The

• penetrations will be sealed upon completion of associated work.

The hourly fire watch, as addressed in the Description of Occurrence sect~on, will continue untii all fire protection concertis associated with these areas are resolved.

• General Manager -

Salem Operations MJP:pc SORC Mtg.92-049