ML20247R975
| ML20247R975 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/02/1998 |
| From: | Polich T NRC (Affiliation Not Assigned) |
| To: | Terry C TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| GL-97-04, GL-97-4, TAC-M99976, TAC-M99977, NUDOCS 9805290255 | |
| Download: ML20247R975 (4) | |
Text
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Mr. C. Lance Terry May 2, 1998 l
TU Electric Senior Vice President & Principal Nuclear Officer Attn: Regulatory Affairs Department P. O. Box 1002 i
Glen Rose, TX 76043 l
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION COMANCHE PEAK, UNITS 1 AND 2 i
(TAC NOS. M99976 AND M99977)
Dear Mr. Terry:
The staff issued Generic Letter (GL) 97-04, " Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumpf on October 7,1997, and l
requested both a 30 day and a 90 day response from all addressees. The GL requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated November 6,1997, TU Electric submitted its 30 day response to GL 97-04, and committed to provide the information requested in the 90 day response by April 7,1998, 90 days beyond the i
requested response dcte. During a telephone conversation with members of NRR on December 12,1997, TU Electric agreed to provide as much of the 90 day requested information as practical, during the week of January 12,1998. TU Electric provided that response on January 14,1998, and reaffirmed they would provide further clarifying infonnation by April 7, 1998, as agreed to by NRR in the telephone conversation of December 12,1997. On April 3, 1998, TU Electric requested another extension of the date for final clarifying informeon to April 14,1998. However, in that response TU Electric stated that the January 14,1998, i
response fully satisfied the required response as requested in of GL 97-04, and that no further response was necessary.
The staff has reviewed your protracted responses and has determined that additionalinformation is necessary. Please provide the information in the attached request within 30 days from the date of this letter. Should you have any questions, please contact me at (301) 415-1038.
Sincerely, ORIGINAL SIGNED BY:
Timothy J. Polich, Project Manager Project Directorate IV-1 9805290255 980502 PDR ADOCK 05000445 Division of Reactor Proj,ects lil/IV P
PDR Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosure:
Request for Additional Information 7
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May 22, 1998 Mr. C. Lance Tony TU Electric Senior Vice President & Principal Nuclear Officer Attn: Regulatory Affairs Department P. O. Box 1002 Glen Rose, TX 76043
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION COMANCHE PEAK, UNITS 1 AND 2 (TAC NOS. M99976 AND M99977)
Dear Mr. Tony:
l l
The staff issued Generic Letter (GL) 97-04, " Assurance of Sufficient Not Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps" on October 7,1997, and requested both a 30 day and a 90 day response from all addressees. The GL requested that licensees provide information necessary to confirm the adequacy of the not positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated November 6,1997, TU Electric submitted its 30 day response to GL 97-04, and committed to provide the information requested in the 90 day response by April 7,1998,90 days beyond the requested response date. During a telephone conversation with members of NRR on December 12,1997, TU Electric agreed to provide as much of the 90 day requested information as practical, during the week of January 12,1998. TU Electric provided that response on January 14,1998, and reaffirmed they would provide further clarifying information by April 7, 1998, as agreed to by NRR in the telephone conversation of December 12,1997. On April 3, 1998, TU Electric requested another extension of the date for final clarifying information to April 14,1998. However, in that response TU Electric stated that the January 14,1998, response fully satisfied the required response as requested in of GL 97-04, and that no fur 1her response was necessary.
The staff has reviewed your protracted responsss and has determined that additior'al information is necessary. Please provide the information in the attached request within 30 days from the date of this letter. Should you have any questions, please contact me at (301) 415-1038.
Sincerely, Timothy J. Polich, Project Manager Project Directorate IV-1 Division of Reactor Projects lil/lV Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosure:
Request for AdditionalInformation cc w/ encl: See next page
Mr. C. LCnce Terry
'f TU Electric Company Comanche Peak, Units 1 and 2 cc:
Senior Resident inspector Honorable Dale McPherson J
U.S. Nuclear Regulatory Commission County Judge l
l P. O. Box 215g P. O. Box 851 Glen Rose, TX 76403-2159 Glen Rose, TX 76043 Regional Administrator, Region IV Office of the Govemor U.S. Nuclear Regulatory Commission ATTN: John Howard, Director 611 Ryan Plaza Drive, Suite 400 Environmental and Natural Ariington,TX 76011 Resources Policy P. O. Box 12428 Mrs. Juanita Ellis, President Austin, TX 78711 Citizens Association for Sound Energy 1426 South Polk Arthur C. Tate, Director Dallas,TX 75224 Division of Compliance & Inspection Bureau of Radiation Control Mr. Roger D. Walker Texas Department of Health TU Electric 1100 West 49th Street Regulatory Affairs Manager Austin, TX 78756-3189 P. O. Box 1002 Glen Rose, TX 76043 Jim Calloway I
Public Utility Commission of Texas I
Texas Utilities Electric Company Electric Industry Analysis c/o Bethesda Licensing P. O. Box 13326 3 Metro Center, Suite 810 Austin, TX 78711-3326 Bethesda, MD 20814 George L. Edgar, Esq.
Morgan, Lewis & Bocklus 1800 M Street, N.W.
Washington, DC 20036-5869
l REQUEST FOR ADDITIONAL INFORMATION REGARDING GL 97-04 ISSU,ES AT COMANCHE PEAK. UNITS 1 AND 2 TAC NOS. M99976 AND M99977 1.
What is the maximum sump temperature assumed in the Net Positive Suction Head (NPSH) analysis?
2.
Your response to question 2 in a letter dated January 14,1998, provides the results of the NPSH analyses provided by the NSSS vendor and the NE. The NE NPSH analyses appear to be more limiting. Which NPSH analysis is the calculation of record for Comanche Peak, Units 1 and 27 ENCLOSURE