ML20044D714
| ML20044D714 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 05/18/1993 |
| From: | Kokajko L Office of Nuclear Reactor Regulation |
| To: | Cottle W HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 9305200184 | |
| Download: ML20044D714 (2) | |
Text
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l May 18, 1993 Docket Nos. 50-498 and 50-499 Mr. William Cottle Group Vice-President, Nuclear Houston Lighting & Power Company Post Office Box 1700 Houston, Texas 77251
Dear Mr. Cottle:
SUBJECT:
SHORT DURATION INTEGRATED LEAK RATE TESTS By letter dated June 8, 1992, Houston Lighting & Power Company (HL&P) requested permission to conduct short duration Integrated Leak Rate Tests (ILRTs) to satisfy the requirements of 10 CFR Part 50, Appendix J, " Primary Reactor Containment Leakage Testing for Water-Cooled Power Reactors," and Technical Specification 3/4.6.1.2, " Containment Leakage." HL&P proposes to change the current minimum leakage rate test period of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to a shorter test period, and conduct the test in accordance with Bechtel Corporation's Topical Report BN-TOP-1, Revision 1, " Testing Criteria for Integrated Leak Rate Testing of Primary Containment Structures for Nuclear Power Plants,"
dated November 1, 1972, which allows test durations as short as 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. The NRC has previously approved Bechtel Corporation's Topical Report BN-TOP-1, Revision 1, in a Safety Evaluation dated January 15, 1973.
The staff has determined that the proposed change meets the requirements of 10 CFR Part 50, Appendix J, and is in accordance with the American National Standard (ANSI) N45.4-1972, " Leakage-Rate Testing of Containment Structures for Nuclear Reactors." The length of the short duration ILRTs will be based on the methodology described in Bechtel Corporation's Topical Report BN-TOP-1, Revision 1.
The minimum test duration of ILRTs performed using the Mass Point method will remain at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, as required by Appendix J.
There are no required changes to the South Texas Project, Units 1 and 2 technical specifications or to the Updated Final Safety Analysis Report.
Therefore, the staff finds the proposed change to be acceptable.
Sincerely, Original Signed By Lawrence E. Kokajko, Project Manager 190678 Project Directorate IV-2 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation cc:
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Mr. William Cottle May 18,1993 I
cc:
l Mr. J. Tapia Jack R. Newman, Esq.
Senior Resident inspector Newman & Holtzinger, P.C.
U.S. Nuclear Regulatory Commission 1615 L Street, N.W.
P. O. Box 910 Washington, D.C.
20036 Bay City, Texas 77414 i
Licensing Representative Mr. J. C. Lanier/M. B. Lee Houston Lighting and Power Company City of Austin Suite 610 Electric Utility Department Three Metro Center 721 Barton Springs Road Bethesda, Maryland 20814 Austin, Texas 78704 Bureau of Radiation Control Mr. K. J. Fiedler State of Texas i
Mr. M. T. Hardt 1101 West 49th Street City Public Service Board Austin, Texas 78756 P. O. Box 1771 San Antonio, Texas 78296 Rufus S. Scott l
Associate General Counsel Mr. D. E. Ward Houston Lighting and Power Company Mr. T. M. Puckett P. O. Box 61867 Central Power and Light Company Houston, Texas 77208 i
P. O. Box 2121 Corpus Christi, Texas 78403 INPO i
Records Center 700 Galleria Parkway I
Atlanta, Georgia 30339-5957 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission
__l 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Mr. Joseph M. Hendrie 50 Bellport Lane Bellport, New York 11713 Judge, Matagorda County Matagorda County Courthouse 1700 Seventh Street Bay City, Texas 77414 Mr. William J. Jump General Manager, Nuclear Licensing Houston Lighting and Power Company P. O. Box 289 Wadsworth. Texas 77483 i
6 Mr.1[illiamCottle May 18,1993 DISTRIBUTION: