ML18096A589

Special Rept 92-2:on 920302 & 21,fire Barriers Impaired for More than 7 Days to Support Design Changes & outage-related Activities.Hourly Fire Watch Established & Fire Penetrations Will Be Sealed

ML18096A589
Person / Time
Site:	Salem
Issue date:	03/23/1992
From:	Vondra C Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
92-2, NUDOCS 9203300268
Download: ML18096A589 (4)

Text

PS~G *

• Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station

. March 23, 1992 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 Nb. 2 SPECIAL REPORT 92-2 This report addresses.Salem Unit 1 and.Salem Unit 2 fire barrier penetration seal impairments which have not been restored to functional status within seven {7) days. Th~se 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.

Since.rely yours, C. A. Vondra General Manager -

Salem Operations MJP:pc Distribution

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9203300268 920323 95-2189 (10M) 12-89 PDR ADOCK 05000311

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UNIT 2 SPECIAL REPORT * .

PLANT

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IDENTIFICATION:

Salem Generating Station - Units 1 and 2 Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038

. IDENTIFICATJON OF O~~lJRRE~CE_:_

Technical Specification 3.1.11; Fire Barriers Impaired For Greater Than Seven (7) Days in Support of Planned Work Event Dates: 3/02/92 and 3/21/92 Report Date: 3/23/92 This report was initiated by Incident Report Nos.92-128, 92~182, and 92-183.

Unit 1 - 3/14/92: Mode 1 Reactor Power 100% - Unit *Load 1160 MWe Unit 2 - 2/24/92: Mode 6 (Refueling); 6th Refueling Outage in progress Unit 2 - 3/14/92: Mode 5 (Cold Shutdown)

DESCRIPTION

-- ---------*--- -**- - ---**OF OCCURRENCE:

Per Technical Specification Action Statement 3.7.11.a {for both Salem Unit 1 and Salem Unit 2), a Special Report is required when fire barrier penetration seals are impaired for greater .than seven* {7) days. This report satisfies this requirem~nt.

The subject fire barrier impairments were initiated in support of design changes and other Salem Unit 2 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 February 24, 1992, two (2) fire barrier penetrations were impaired in support of Type A Containment Leak Rate Testing. On March 14, 1992, two (2) fire barrier penetrations were impaired to allow the routing of power c~bles in support_of Service Water design modifications. These penetrations are located as follows:

Date of*

No-.

- - - - of -- Location Penetrations 2/24/92 1 Type A Test #2 Relay Roon' Support 1 78' EJec. Pen. Area 3/14/92 1 SW project support Unit 2 100' El.

Floor Plate in the Boric Acid Transfer

- Pump Co!~-ridor

• UNIT 2 SPECIAL REPORT ~

• Date of No.

- - -of - Location J_1!!12_~ i rm ~I:!.t 3/14/92 1 SW project support Unit 1 100' El.

Floor Plate Boric Acid Transfer Pump Corridor 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", wer~

met.

Salem Unit 2 Technical Specification 3~7.11 states:

"All fire penetr~tions (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 co~tinuous fire watch on at least one (1) side of the affected penetration, or verify the OPERABIJLITY of fire detectors on at least one. (1} side of th~ inoperable fire barrie~ 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 action taken, the cause of the inoperable penetration and plans and schedule for restoring the fire barrier penetration(s) to OPERABLE status."

The Salem Unit 1 Technical Specifications_ are identical to the above Unit 2 Technical Specifications; however, the term functional" is used instead of the term "OPERABLE".

APPARENT CAUSE OF OCCURRENCE:

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

A_IJAJ,.iYS J;_S___Qlf _O_CCURRENC_E:

The functional integrity of fire barrier penetrations ensures that fires will be confined or ~dequately 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 discovery antj eventual repair of the fire barrier impairments is greater than seven

UNIT 2 SPECIAL REPORT . * ****

ANALYSI~ OF OCCURRE~Cli_;__ ( co_~-t;~d)_

• • (7) days. Appropriate remedial actions were already in place in accordanc~ with the requirem~nts of Technical Specification Action Statement 3.7.11.a to establish an hourly ~oving fire watch patrol for the impa~red fire barriers once the impairments were identified.

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 ho undue risk to the h~alth.or safety of the public ..

CORRECTIVE ACTION:

The repair of the planned impaired penetrations was not accomplished within seven (7) days d~e to the time required to 6omplete work. The penetrations will be sealed upon completion of associated work.

The hourly'fire wat6h, as addre~sed 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.92-033