ML20217Q678
| ML20217Q678 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 05/06/1998 |
| From: | Alexion T NRC (Affiliation Not Assigned) |
| To: | Cottle W HOUSTON LIGHTING & POWER CO. |
| Shared Package | |
| ML20217Q681 | List: |
| References | |
| IEB-88-008, IEB-88-8, TAC-M93822, TAC-M93823, NUDOCS 9805110001 | |
| Download: ML20217Q678 (4) | |
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1 UNITED STATES AN l
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NUCLEAR REGULATORY COMMISSION t
WASHINGTON, D.C. 20066-0001 s..../
May 6, 1998 l
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Mr'. William T. Cottle President and Chief Executive Officer STP Nuclear Operating Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483
SUBJECT:
RESOLUTION OF BULLETIN 88-08, " THERMAL STRESSES IN PIPING CONNECTED TO REACTOR COOLANT SYSTEMS," SOUTH TEXAS PROJECT, UNITS 1 AND 2 (STP)(TAC NOS. M93822 AND M93823)
Dear Mr. Cottle:
On March 3,1998, the Nuclear Regulatory Commission (NRC) staff met with representatives of STP Nuclear Operating Company (STPNOC) and Westinghouse @ to allow STPNOC and W the opportunity to provide additional information on the long-term resolution of Bulletin 88-08 for STP. STPNOC provided specific information on the configurations of the relevant piping systems and W provided additional information regarding the application of the thermal stratification, cycling and striping (TASCS) methodology to these systems.
9nclosed is the staff's Safety Evaluation (SE) that incorporates the additional information provided at the meeting. The staff has evaluated the information and has found it acceptable for application to the normal and altemate charging and auxiliary spray lines at STP only. Based on this SE, the staff has concluded that monitoring for leakage in the normal and altemate charging and auxiliary spray lines at STP is not required, j
A related issue is the resolution of Bulletin 88-08, Supplement 3, with regard to the residual heat
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removallines at STP. STPNOC and W also presented the application of the TASCS
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methodology to these lines. The staff found a certain inconsistency in the application, which is unresolved. However, W had previously performed an evaluation of these lines in WCAP-12108. -
The evaluation showed that these lines were not susceptible to the phenomena in Supplement 3.
The staff has reviewed WCAP-12108 and considers this issue resolved as discussed in the SE.
l 9805110001 980506 PDR ADOCK 05 GOO 498 NRC FILF BERTER COPY a
Mr. William T. Cottle l
' The staff, therefore, finds that STPNOC has provided the necessary assurance required by Action 3 of Bulletin 88-08 for these lines, and considers the issues with respect to Bulletin 88-08 resolved for STP.
r Sincerely,.
ORIGINAL SIGNED BY:
Thomas W. Alexion, Project Manager Project Directorate IV-1 Division of Reactor Projects ill/lV L
Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499
Enclosure:
Safety Evaluation i
i cc w/ encl: See next page
. DISTRIBUTION:
' Docket File PUBLIC PD4-1 r/f
. EAdensam (EGA1)
JHannon CHawes 3
TAlexion OGC ACRS TGwynn, RIV THarris (TLH3)
Document Name: STP93822.LTR f/
PM/EE4FCI hlV-1 OFC LA/PD4-1 P
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NAME-TAlext f/h /98 6/I/98
/98 '
DATE YE[Nh COPY-ES\\O YES/NO
'9FFICIAL RECORD COPY--
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Mr. William T. Cottle,
The staff, therefore, finds that STPNOC has provided the necessary assurance required by l
Action 3 of Bulletin 88-08 for these lines, and considers the issues with respect to Bulletin 88-03
' resolved for STP.
l Sincerely, l
(dD ',
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Thomas W. Alexion, Proje Manager Project Directorato IV-1 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499
Enclosure:
Safety Evaluation cc w/ encl: See next page I
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Mr. William T. Cottle STP Nuclear Operating Company South Texas, Units 1 & 2
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cc:
I Mr. David P. Loveless Jack R. Newman, Esq.
Senior Resident inspector Morgan, Lewis & Bockius U S. Nuclear Regulatory Commission 1800 M Street, N.W.
l P. O. Box 910 Washington, DC 20036-5869 Bay City, TX 77414 Mr. Lawrence E. Martin 4
A. Ramirez/C. M. Canady Vice President, Nuc. Assurance & Licensing City of Austin STP Nuclear Operating Company Electric Utility Department P. O. Box 289 721 Barton Springs Road Wadsworth, TX 77483 Austin, TX 78704 Office of the Govemor Mr. M. T. Hardt ATTN: John Howard, Director Mr. W. C. Gunst Environmental and Natural City Public Service Board Resources Policy P. O. Box 1771 P. O. Box 12428 San Antonio,TX 78296 Austin, TX 78711 Mr. G. E. Vaughn/C. A. Johnson Jon C. Wood Central Power and Light Company Matthews & Branscomb P. O. Box 289 One Alamo Center Mail Code: N5012 106 S. St. Mary's Street, Suite 700 Wadsworth, TX 74483 San Antonio, TX ^/8205-3692 INPO Arthur C. Tate, Director Records Center Division of Compliance & Inspection 700 Galleria Parkway Bureau of Radiation Control Atlanta, GA 30339-3064 Texas Department of Health 1100 West 49th Street Regional Administrator, Region IV Austin, TX 78756 U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Jim Calloway Ariington, TX 76011 Public Utility Commission of Texas Electric Industry Analysis D. G. Tees /R. L. Balcom P. O. Box 13326 Houston Lighting & Power Co.
Austin, TX 78711-3326 P. O. Box 1700 Houston, TX 77251 Judge, Matagorda County Matagorda County Courthcuse 1700 Seventh Street Bay City, TX 77414