ML073190286
| ML073190286 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/19/2007 |
| From: | Balwant Singal NRC/NRR/ADRO/DORL/LPLIV |
| To: | Blevins M Luminant Generation Co |
| Singal, Balwant, 415-3016, NRR/DORL/LPL4 | |
| References | |
| TAC MD6561, TAC MD6562 | |
| Download: ML073190286 (6) | |
Text
November 19, 2007 Mr. M. R. Blevins Executive Vice President
& Chief Nuclear Officer Luminant Generation Company LLC ATTN: Regulatory Affairs P. O. Box 1002 6322 North FM 56 Glen Rose, TX 76043
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RE LICENSE AMENDMENT REQUEST (LAR)07-006 TO REVISE TECHNICAL SPECIFICATIONS TO REFLECT CYCLE-SPECIFIC SAFETY ANALYSIS ASSUMPTIONS RE ADOPTION OF W*
METHODOLOGIES (TAC NOS. MD6561 AND MD6562)
Dear Mr. Blevins:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated August 16, 2007, TXU Generation Company LP (subsequently renamed Luminant Generation Company LLC) submitted Technical Specification (TS) changes to reflect the results of the cycle-specific safety analysis for Comanche Peak Steam Electric Station, Units 1 and 2 for NRC review in accordance with Title 10 of the Code of Federal Regulations (10 CFR) Section 50.90.
The NRC Instrumentation and Controls Branch has completed its review of your application and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. You are requested to respond to the request for additional information (RAI) within 30 days from the issuance of this letter.
Please note that the NRC Reactor Systems Branch is also reviewing your application and may request additional information at a later date.
The NRC staff considers that timely responses to RAIs help ensure sufficient time is available for NRC staff to complete its review and contribute toward the NRCs goal of efficient and effective use of staff resources.
M. R. Blevins If you have any questions, please contact me at (301) 415-3016.
Sincerely,
/RA/
Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosure:
Request for Additional Information cc w/encl: See next page
M. R. Blevins If you have any questions, please contact me at (301) 415-3016.
Sincerely,
/RA/
Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
PUBLIC LPL4 R/F RidsAcrsAcnwMailCenter RidsNrrDeEicb RidsNrrDssSrsb RidsNrrDorlLpl4 RidsNrrLAJBurkhardt RidsNrrPMBSingal RidsNrrDorlDpr RidsOgcRp RidsRgn4MailCenter KScales, NRR BMarcus, NRR ADAMS Accession Number: ML073190286
- email dated OFFICE LPL4/PM LPL4/LA EICB/BC LPL4/BC NAME BSingal JBurkhardt WKemper*
THiltz, JND for DATE 11/19/07 11/19/07 11/8/07 11/19/07 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION RELATED TO REVIEW ASSOCIATED WITH TECHNICAL SPECIFICATION CHANGES TO REFLECT THE RESULTS OF THE CYCLE-SPECIFIC SAFETY ANALYSIS LUMINANT GENERATION COMPANY LLC COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 1 AND 2 DOCKET NOS. 50-445 AND 50-446 The License Amendment Request 07-006 proposes Technical Specification (TS) changes associated with Reactor Trip System Instrumentation (Table 3.3.1-1) and Engineered Safety Feature Actuation System Instrumentation (Table 3.3.2-1) Allowable Values for Comanche Peak Steam Electric Station, Units 1 and 2. To support the U.S. Nuclear Regulatory Commission's assessment of the acceptability of these changes, you are requested to provide the following additional information:
1.
For the changes to the Allowable Values in TS Tables 3.3.1-1 and 3.3.2-1, provide the following information:
Setpoint Calculation Methodology: Provide documentation (including sample calculations) of the methodology used for establishing the limiting setpoint (or NSP) and the limiting acceptable values for the As-Found and As-Left setpoints as measured in periodic surveillance testing as described below. Indicate the related Analytical Limits and other limiting design values (and the sources of these values) for each setpoint.
2.
For the Functional Unit 14, Steam Generator Water Level Low-Low, Table 3.3.1-1, Reactor Trip System Instrumentation, the Narrow Range Instrument Span (Unit 2) was revised to 34.9 percent. Explain why notes (q) and (r) are not applicable.
3.
For the Functional Unit 5b, Steam Generator Water Level-High High (P14),
Table 3.3.2-1, Engineered Safety Features Actuation System Instrumentation, the Narrow Range Span (Unit 2) was revised to 82.0 percent. Explain why notes (q) and (r) are not applicable.
4.
For the Functional Unit 6c, Steam Generator Water Level Low-Low, Table 3.3.2-1, Engineered Safety Features Actuation System Instrumentation, the Narrow Range Span (Unit 2) was revised to 34.9 percent. Explain why notes (q) and (r) are not applicable.
October 2007 Comanche Peak Steam Electric Station cc:
Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 2159 Glen Rose, TX 76403-2159 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 Mr. Fred W. Madden, Director Regulatory Affairs Luminant Generation Company LLC P.O. Box 1002 Glen Rose, TX 76043 Timothy P. Matthews, Esq.
Morgan Lewis 1111 Pennsylvania Avenue, NW Washington, DC 20004 County Judge P.O. Box 851 Glen Rose, TX 76043 Environmental and Natural Resources Policy Director Office of the Governor P.O. Box 12428 Austin, TX 78711-3189 Mr. Richard A. Ratliff, Chief Bureau of Radiation Control Texas Department of Health 1100 West 49th Street Austin, TX 78756-3189 Mr. Brian Almon Public Utility Commission William B. Travis Building P.O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326 Ms. Susan M. Jablonski Office of Permitting, Remediation and Registration Texas Commission on Environmental Quality MC-122 P.O. Box 13087 Austin, TX 78711-3087 Mr. Anthony P. Jones Chief Boiler Inspector Texas Department of Licensing and Regulation Boiler Division E.O. Thompson State Office Building P.O. Box 12157 Austin, TX 78711