ML19351F844

Fire Protection Safety Evaluation Suppl Re Cable Tray Penetration Seal Qualification.Item 3.1.29 Acceptable.Item 3.1.15 Remains Open

ML19351F844
Person / Time
Site:	Point Beach
Issue date:	01/22/1981
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML19351F842	List: ML19351F841 ML19351F844
References
TAC-11079, TAC-11080, NUDOCS 8102200343
Download: ML19351F844 (3)

Text

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O FIRE PROTECTION SAFETY EVALUATION REPORT SUPPLEMENT e

POINT BEACH NUCLEAR PLANT UNIT NOS. 1 AND 2 By letter dated October 13, 1980 Wisconsin Electric Power Company provided additional information regarding fire protection modifications identified as incomplete in the Point Beach Fire Protection Safety Evaluation Report (SER) of August 2,1979. One of these items is now complete and is discussed below.

Cable Tray Penetration Seal Qualification, Section 3.1.29 In the SER, it was our concern that the fire barrier penetrations may not be adequately sealed to prevent a fire from propagating from one fire area to another.

By letter dated October 13, 1980, the licensee provided drawings of the standard penetration seal designs.

In addition, the licensee provided the American Nuclear Insurers (ANI) approval sheets for these seal. designs. The ANI sheets indicate that all of these proposed seal designs have been tested and are qualified as 3-hour fire rated penetration seals.

The ANI certification sheets indicate that the penetration seals have been tested in accordance with the "ANI/MAERP Standard Method of Fire Tests of Cable and Pipe Penetration Fire Stops" which is an acceptable test method for fire barrier penetration seals.

Based on our review, we find that the penetration seals have been tested in accordance with an acceptable test method to qualify as three-hour fire rated seals, meet Section D.l(j) of Appendix A to BTP APCSB 9.5-1 and, therefore, are acceptable.

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Review of Ventilation System Control Cables, Section 3.1.15 In the SER, it was our concern that.the control cables and junction boxes for the redundant diesel generator ventilation air fans were located in a single diesel generator room with distribution to both diesel generator room ventilating systems.

In the event of a fire in this room, both venti-lating systems could become inoperative.

By letter dated October 13, 1980, the licensee indicated that an engineering inspection verified that the subject control cables and junction boxes are located outside of the diesel generator rooms and, therefore, modifications are not necessary.

The licensee has not proposed any additional fire protection for the redundant diesel generator room ventilation system control cables and junction boxes which are located side by side. A single unmitigated fire could still affect both systems.

Based on our review, we conclude that the licensee's p?sposed modification does not meet Section III, Paragraph G of Appendix R to 10 CFR Part 50 and, therefore, is not acceptable. The licensee should either protect the re-dcndant control cables and junction boxes for the diesel generator room ventilation systems in accordance with Section III, Paragraph G of. Appendix R to 10 CFR Part 50 or verify that their loss due to a fire would have no affect on safe stotdown capability following the fire.

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ENCLOSURE 3 FIRE PROTECTION REVIEW STATUS POINT BEACH NUCLEAR PLANTS, 1 & 2 DOCKET N05. 50-266 AND 50-301 ITEM DESr.RIPTION STATUS

• 3.1.2 Smoke Exhaust C

3.1.4 Fixed Water Suppression Systems C

3.1.23 Carbon Dioxide Hose Reel Nozzles C

3.1.25 Ventilation Duct Penetration Seals C

3.1.29 Cable Tray Per.etration Seal Qualification C

3.2.3 Fire Brigade Size C

3.2.5 Smoke Detector - System Qualification C

3.1.5 Water Damage Protection R

3.1.9 Fire Barriers R

3.1.14 Cable Separation R

3.1.15 Ventilation System Control Cables R

3.1.17 Hydrogen Hazard Protection R

3.1.24 Diesel Generator Air Intake Structure R

3.1.26 Aux. Bldg. Cable Tray Penetration Seals R

3.1.27 Containment Bldg. Fire Stops R

3.1.28 Service Building Penetration Seals R

3.1.32 Fire Hidrant Inspections R

3.1.33 Control Room Light Fixtures R

3.2.1 Safe Shutdown Capability R

3.2.2 Circulating Water Pump House Fire Protection R

3.2.4 Fire Brigade Training Frequency R

3.2.6 RCP Lube Oil Collection System R

C - Closed R - Requirement i

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