NRC 2002-0046, Completed Evaluation of Degraded Fire Barrier, Point Beach Nuclear Plant, Unit 1 & 2

Completed Evaluation of Degraded Fire Barrier, Point Beach Nuclear Plant, Unit 1 & 2

ML021690146
Person / Time
Site:	Point Beach
Issue date:	06/04/2002
From:	Webb T Nuclear Management Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-86-010, NRC 2002-0046
Download: ML021690146 (2)

Text

Kewaunee Nuclear Power Plant Point Beach Nuclear Plant N490 Highway 42 6610 Nuclear Road Kewaunee, WI 54216-9511 Two Rivers, WI 54241 920.755.2321 NM C Committed to Nuclear Excellence 920.388.2560 Kewaunee / Point Beach Nuclear Operated by Nuclear Management Company, LLC NRC 2002-0046 10 CFR 50.4 June 4, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Docket 50-266 and 50-301 Point Beach Nuclear Plant, Unit 2 Completed Evaluation of Degraded Fire Barrier Point Beach Nuclear Plant, Unit 1 and 2 Ladies/Gentlemen:

Enclosed with out letter dated May 10, 2001 (NRC 2001-03 1) was a special report for Point Beach Nuclear Plant (PBNP), Unit 1 and Unit 2. The report was provided in accordance with the PBNP Fire Protection Evaluation Report (FPER), Section 8.1.5. That section requires the submittal of a special report to the U.S. Nuclear Regulatory Commission when degradation of fire protection systems or components, including an inoperable fire barrier, exceeds the time listed in FPER Section 8.1.3. As discussed in the enclosure to that letter, we reported the discovery of a degraded fire damper in the barrier that separates the 8'-0" elev. of the primary auxiliary building from the 26'-0" elev. of the south service building (damper M-5-4-1-G).

In addition to a description of immediate compensatory measures we initiated upon discovery of this condition, we also provided our plans for correcting this condition. At that time, we were evaluating a modification to restore the damper to its original condition. We have subsequently completed a fire protection engineering evaluation (FPEE-1999-009, Revision 1, dated April 29, 2002), which evaluates the acceptability of HVAC ducts that pass through Appendix R credited fire barriers without fire dampers installed. This evaluation was conducted in accordance with the guidelines of Generic Letter 86-10, "Implementation of Fire Protection Requirements," and included an assessment of damper M-5-4-1-G. This evaluation determined that the duct passing through this penetration provides protection adequate for the hazard posed. Based on the conclusion of this evaluation, we have determined that no corrective modifications are necessary for this penetration damper.

NRC 2002-0046 Page 2 If you have any questions concerning our resolution of this matter, please contact us.

Thomas J. Webb Regulatory Affairs Manager CW1Kkmd cc: NRC Regional Administrator NRC Project Manager NRC Resident Inspector PSCW

Text

Kewaunee Nuclear Power Plant Point Beach Nuclear Plant N490 Highway 42 6610 Nuclear Road Kewaunee, WI 54216-9511 Two Rivers, WI 54241 920.755.2321 NM C Committed to Nuclear Excellence 920.388.2560 Kewaunee / Point Beach Nuclear Operated by Nuclear Management Company, LLC NRC 2002-0046 10 CFR 50.4 June 4, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Docket 50-266 and 50-301 Point Beach Nuclear Plant, Unit 2 Completed Evaluation of Degraded Fire Barrier Point Beach Nuclear Plant, Unit 1 and 2 Ladies/Gentlemen:

Enclosed with out letter dated May 10, 2001 (NRC 2001-03 1) was a special report for Point Beach Nuclear Plant (PBNP), Unit 1 and Unit 2. The report was provided in accordance with the PBNP Fire Protection Evaluation Report (FPER), Section 8.1.5. That section requires the submittal of a special report to the U.S. Nuclear Regulatory Commission when degradation of fire protection systems or components, including an inoperable fire barrier, exceeds the time listed in FPER Section 8.1.3. As discussed in the enclosure to that letter, we reported the discovery of a degraded fire damper in the barrier that separates the 8'-0" elev. of the primary auxiliary building from the 26'-0" elev. of the south service building (damper M-5-4-1-G).

In addition to a description of immediate compensatory measures we initiated upon discovery of this condition, we also provided our plans for correcting this condition. At that time, we were evaluating a modification to restore the damper to its original condition. We have subsequently completed a fire protection engineering evaluation (FPEE-1999-009, Revision 1, dated April 29, 2002), which evaluates the acceptability of HVAC ducts that pass through Appendix R credited fire barriers without fire dampers installed. This evaluation was conducted in accordance with the guidelines of Generic Letter 86-10, "Implementation of Fire Protection Requirements," and included an assessment of damper M-5-4-1-G. This evaluation determined that the duct passing through this penetration provides protection adequate for the hazard posed. Based on the conclusion of this evaluation, we have determined that no corrective modifications are necessary for this penetration damper.

NRC 2002-0046 Page 2 If you have any questions concerning our resolution of this matter, please contact us.

Thomas J. Webb Regulatory Affairs Manager CW1Kkmd cc: NRC Regional Administrator NRC Project Manager NRC Resident Inspector PSCW