ML17312B190
| ML17312B190 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/21/1997 |
| From: | Clifford J NRC (Affiliation Not Assigned) |
| To: | James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| References | |
| GL-92-08, GL-92-8, TAC-M85583, TAC-M85584, TAC-M85585, NUDOCS 9701230316 | |
| Download: ML17312B190 (7) | |
Text
January 21, 1997 Hr. James H. Levine Executive Vice President, Nuclear Arizona Public Service Company Post Office Box 53999
- Phoenix, Arizona 85072-3999
SUBJECT:
FOLLOW-UP REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS" FOR THE PALO VERDE NUCLEAR GENERATING STATION (TAC NOS.
- H85583, H85584, AND M85585)
Dear Hr. Levine:
We have reviewed your December 31, 1996, letter that provided an updated status of activities associated with the resolution of the concerns regarding Thermo-Lag fire barriers as requested in Generic Letter 92-08, "Thermo-Lag 330-1 Fire Barriers."
To assist the staff in completing its evaluation of the information provided in your letter, we request that you provide the additional information requested in the enclosure.
Please provide the requested information within 45 days of receipt.
Please contact me at (301) 415-1352 if you have any questions.
Sincerely, Original Signed By James W. Clifford, Senior Project Manager Project Directorate IV-2 Division ofReactor Projects III/IV Offi,ce of Nuclear Reactor Regulation Docket Nos.
STN 50-528, STN 50-529 DISTRIBUTION:
and STN 50-530 QBocket File'i EPeyton PUBLIC ACRS
Enclosure:
Request for Additional,,
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 205554001 January 21, 1997 Hr. James H. Levine Executive Vice President, Nuclear Arizona Public Service Company Post Office Box 53999
- Phoenix, Arizona 85072-3999
SUBJECT:
FOLLOW-UP REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS" FOR THE PALO VERDE NUCLEAR GENERATING STATION (TAC NOS.
- M85583, M85584, AND M85585)
Dear Mr. Levine:
We have reviewed your December 31, 1996, letter that provided an updated status of activities associated with the resolution of the concerns regarding Thermo-Lag fire barriers as requested in Generic Letter 92-08, "Thermo-Lag 330-1 Fire Barriers."
To assist the staff in completing its evaluation of the information provided in your letter, we request that you provide the additional information requested in the enclosure.
Please provide the requested information within 45 days of receipt.
Please contact me at (301) 415-1352 if you have any questions.
Sincerely, Docket Nos.
STN 50-528, STN 50-529 and STN 50-530 J
es W. Clif rd, Senior Project Manager Project Directorate IV-2 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/encl:
See next page
Mr. James M. Levine January 21, 1997 cc w/encl:
Mr. Steve Olea Arizona Corporation Commission 1200 W. Washington Street
- Phoenix, Arizona 85007 Douglas Kent Porter Senior Counsel Southern California Edison Company Law Department, Generation Resources P.O.
Box 800
- Rosemead, California 91770 Senior Resident Inspector USNRC P.
O.
Box 40
- Buckeye, Arizona 85326 Regional Administrator, Region IV U. S. Nuclear Regulatory Commission Harris Tower
& Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064
- Chairman, Board of Supervisors ATTN:
Chairman
.301 W. Jefferson, 10th Floor
- Phoenix, Arizona 85003 Mr. Aubrey V. Godwin, Director Arizona Radiation Regulatory Agency 4814 South 40 Street Phoenix, Arizona 85040 Ms. Angela K. Krainik, Manager Nuclear Licensing Arizona Public Service Company P.O.
Box 52034
- Phoenix, Arizona 85072-2034 Mr. John C. Horne, Vice President Power Supply Palo Verde Services 2025 N. Third Street, Suite 220
- Phoenix, Arizona 85004 Mr. Robert Burt Los Angeles Department of Mater
& Power Southern California Public Power Authority 111 North Hope Street, Room 1255-B Los Angeles, California 90051 Mr. David Summers Public Service Company of New Mexico 414 Silver SW, f0604 Albuquerque, New Mexico 87102 Mr. Bob Bledsoe Southern California Edison Company 14300 Mesa Road, Drop D41-SONGS San Clemente, California 92672 Mr. Robert Henry Salt River Project 6504 East Thomas Road Scottsdale, Arizona 85251
ENCLOSURE PALO VERDE NUCLEAR GENERATING STATION UNITS 1
2 AND 3 DOCKET NOS.
STN 50-528 STN 50-529 AND STN 50-530 FOLLOW-UP 'RE VEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 92-08 "THERMO-LAG 330-1 FIRE BARRIERS" Regarding the fire endurance of Thermo-Lag fire barriers, the licensee states in the December 31, 1996, letter that an engineering evaluation has been conducted, and a 50.59 evaluation has been performed, which concludes that, based on other defense-in-depth fire protection
- features, Palo Verde Nuclear Generating Station no longer needs to credit the Thermo-Lag barriers installed on heating, ventilation and air conditioning and cable tray supports.
Please provide the technical justification, including any appropriate evaluations or analyses, to support your conclusions.
Regarding the combustibility of Thermo-Lag, the licensee states in the December 31, 1996, letter that a fire protection engineering evaluation has been performed to demonstrate that the radiant energy heat shield for the auxiliary spray valve and associated circuitry in containment meets the requirements of Section III.G.2.f of Appendix R to 10 CFR Part 50.
This section of Appendix R requires that radiant energy shields be noncombustible.
Thermo-Lag is classified as a combustible material.
The information regarding the combustibility of Thermo-Lag was provided to the licensee in Information Notice 92-82, "Results of Thermo-Lag 330-1 Combustibility Testing," dated December 15,
- 1992, and in Information Notice 95-27, "NRC Review of Nuclear Energy Institute, Thermo-Lag 330-1 Combustibility Evaluation Methodology Plant Screening Guide," dated May 31, 1995.
Please provide the technical justification, including any supporting evaluations or analyses, to support the determination that the Thermo-Lag installed inside containment meets the requirements of Section III.G.2.f of Appendix R to 10 CFR Part 50.
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