ML20137D702
| ML20137D702 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 03/24/1997 |
| From: | Alexion T NRC (Affiliation Not Assigned) |
| To: | Cottle W HOUSTON LIGHTING & POWER CO. |
| References | |
| TAC-M92177, TAC-M92178, NUDOCS 9703260271 | |
| Download: ML20137D702 (4) | |
Text
-.
Mr. William T. Cottle March 24, 1997 L
Executiva Vice-Presid:nt &
General Manager, Nuclear Houston Lighting & Power Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483 4
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING 10 CFR PART 50, APPENDIX R, DEVIATION REQUEST FOR FIRE AREA 07, SOUTH TEXAS PROJECT, UNITS 1 AND 2 (STP) (TAC NOS. M92177 AND M92178)
Dear Mr. Cottle:
I The Nuclear Regulatory Commission (NRC) staff is reviewing the subject deviation request. The most recent submittal was Houston Lighting & Power Company's (HL&P's) November 6, 1996, response to the staff's RAI dated July 26, 1996. Based on its continuing review, the staff has determined that additional information is needed regarding the subject request, as discussed in the enclosure.
It is requested that the additional information requested in the enclosure is provided within 60 days from the date of this letter.
Sincerely, Orig. signed by-Thomas W. Alexion, Project Manager Project Directorate IV-1 4
Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499
~
Enclosure:
Request for Additional Informition.
cc w/ encl:
See next page s
DISTRIBUTION:
s Docket File PDIV-1 r/f=
PUBLIC JRoe OGC GHill (4)
ACRS TAlexion AHowell, RIV CHawes CGrimes EAdensam (EGA1)
Document Name:
STP92177.RAI OFC PM/PD44d LA/PD4-1
\\
NAME TAlexiorN' CHawes C & h MC N CMM CON DATE 3F4/97 3/M/97 COPY
[YEh/N0 YES/N0 g
0FFICIAL RECORD COPY-g3260271 470324 F
ADOCK 0500049s PDR 1
h ucoq k
UNITED STATES l
g s
j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2066H001
\\
/
March 24, 1997 Mr. William T. Cottle Executive Vice-President &
General Manager, Nuclear Houston Lighting & Power Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION (RAI) REGARDING 10 CFR PART 50, APPENDIX R, DEVIATION REQUEST FOR HRE AREA 07, SOUTH TEXAS PROJECT, UNITS 1 AND 2 (STP) (TAC NOS. M92177 AND M92178)
Dear Mr. Cottle:
The Nuclear Regulatory Commission (NRC) staff is reviewino the subject deviation request. The most recent submittal was Houston Lighting & Power Company's (HL&P's) November 6, 1996, response to the staff's RAI dated July 26, 1996.
Based on its continuing review, the staff has determined that additional information is needed regarding the subject request, as discussed in the enclosure.
It is requested that the additional nformation requested in the enclosure is provided within 60 days from the date of this letter.
Sincerely, o
Thomas W. Alexion, Projeci. Manager Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499
Enclosure:
Request for Additional Information cc w/ enc 1: See next page
b b
l Mr. William T. Cottle Houston Lighting & Power Company South Texas, Units 1 & 2 CC*
Mr. David P. Loveless Jack R. Newman, Esq.
Senior Resident Inspector Morgan, Lewis & Bockius U.S. Nuclear Regulatory Commission 1800 M Street, N.W.
P. O. Box 910 Washington, DC 20036-5869 Bay City, TX 77414 Mr. Lawrence E. Martin Mr. J C. Lanier/M. B. Lee General Manager, Nuclear Assurance Licensing City of Austin Houston Lighting and Power Company i
Electric Utility Department P. O. Box 289 721 Barton Springs Road Wadsworth, TX 77483 Austin, TX 78704 Rufus S. Scott i
Mr. M. T. Hardt Associate General Counsel Mr. W. C. Gunst Houston Lighting and Power Company City Public Service Board P. O. Box 61867 P. O. Box 1771 Houston, TX 77208 San Antonio, TX 78296 Joseph R. Egan, Esq.
1 Mr. G. E. Vaughn/C. A. Johnson Egan & Associates, P.C.
Central Power and Light Company 2300 N Street, N.W.
P. O. Box 289 Washington, DC 20037 Mail Code: N5012 Wadsworth, TX 74483 Office of the Governor ATTN: Andy Barrett, Director INP0 Environmental Policy Records Center P. O. Box 12428 700 Galleria Parkway Austin, TX 78711 Atlanta, GA 30339-3064 Arthur C. Tate, Director Regional Administrator, Region IV Division of Compliance & Inspection U.S. Nuclear Regulatory Commission Bureau of Radiation Control 611 Ryan Plaza Drive, Suite 400 Texas Department of Health Arlington, TX 76011 1100 West 49th Street Austin, TX 7S756 Dr. Bertram Wolfe 15453 Via Vaquero Texas Public Utility Commission Monte Sereno, CA 95030 ATTN: Mr. Glenn W. Dishong 7800 Shoal Creek Blvd.
Judge, Matagorda County Suite 400N Matagorda County Courthouse Austin, TX 78757-1024 1700 Seventh Street Bay City, TX 77414 J. W. Beck Little Harbor Consultants, Inc.
44 Nichols Road Cohasset, MA 02025-1166
't REQUEST FOR ADDITIONAL INFORMATION (RAI)
REGARDING REQUEST FOR DEVIATION FROM THE REQUIREMENTS OF APPENDIX R TO 10 CFR PART 50-SOUTH TEXAS PROJECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 In its November 6, 1996, response, the licensee stated that its engineering analysis is based on requiring that one train of equipment remains free of fire damage.
In addition, in the September 14, 1995, submittal the licensee stated that "There is reasonable assurance that the fire protection features in Fire Area 07 are capable of limiting fire damage so that at least one train of systems necessary to achieve and maintain hot shutdown is free of fire damage."
As part of its review of the deviation request, the staff has reviewed STP's post-fire shutdown licensing basis.
It appears that the licensee has changed the post-fire safe shutdown philosophy. Specifically it appears that the licensee now protects one train of safe shutdown functions from fire damage rather than two trains as documented in the operating license and SSER 2, Section 9.5.1.7.
In order for the staff to complete its review of the deviation request and the licensee's actions to resolve the Thermo-l.ag fire barrier issues, by changing the post-fire safe shutdown methodology, additional information is required, It.is requested that the licensee submit the revised post-fire safe shutdown methodology and fire protection program reports and their supporting engineering analyses.
)
1 ENCLOSURE l
-. _.