ML082900345

Request for Additional Information Related to Total Battery Resistance Technical Specification Change

ML082900345
Person / Time
Site:	Quad Cities
Issue date:	10/28/2008
From:	Joel Wiebe Plant Licensing Branch III
To:	Pardee C Exelon Generation Co
Wiebe, Joel NRR/DORL/LPL3-2, 415-6606
References
TAC MD7539, TAC MD7540
Download: ML082900345 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 28, 2008 Mr. Charles G. Pardee President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO TOTAL BATTERY RESISTANCE TECHNICAL SPECIFICATION CHANGE (TAC NOS. MD7539 and MD7540)

Dear Mr. Pardee:

By letter to the Nuclear Regulatory Commission (NRC) dated December 21 , 2007, Exelon Generation Company, LLC (the licensee) submitted a request to establish total battery connector resistance acceptance criteria in technical specifications surveillance requirements 3.8.4.2 and 3.8.4.5, for the Quad Cities Nuclear Power Station, Units 1 and 2. By letters to the NRC dated August 14, 2008, and October 15, 2008, the licensee provided additional information in response to the NRC requests for additional information dated July 18, 2008, and October 15, 2008.

The NRC staff is reviewing your submittal and during discussions with your staff on October 9, 2008, has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 27,2008, it was agreed that you would provide a response by November 14, 2008.

The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-6606.

Sincerely,

~~~.

Joel Wiebe, Senior Project Manager Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv

October 28,2008 Mr. Charles G. Pardee President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville,IL 60555

SUBJECT:

QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO TOTAL BATTERY RESISTANCE TECHNICAL SPECIFICATION CHANGE (TAC NOS. MD7539 and MD7540)

Dear Mr. Pardee:

By letter to the Nuclear Regulatory Commission (NRC) dated December 21,2007, Exelon Generation Company, LLC (the licensee) submitted a request to establish total battery connector resistance acceptance criteria in technical specifications surveillance requirements 3.8.4.2 and 3.8.4.5, for the Quad Cities Nuclear Power Station, Units 1 and 2. By letters to the NRC dated August 14, 2008, and October 15, 2008, the licensee provided additional information in response to the NRC requests for additional information dated July 18, 2008, and October 15, 2008.

The NRC staff is reviewing your submittal and during discussions with your staff on October 9, 2008, has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 27, 2008, it was agreed that you would provide a response by November 14, 2008.

The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-6606.

Sincerely, IRA by CGratton fori Joel Wiebe, Senior Project Manager Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 Resource RidsNrrLAEWhitt Resource RidsOgcRp Resource RidsRgn3MailCenter Resource RidsAcrsAcnw&mMailCenter Resource RidsNrrDorlDpr Resource RidsNrrDeEeeb Resource RidsNrrPMQuadCities Resource ADAMS Accession No ML082900345 OFFICE LPL3-2IPM LPL3-2ILA LPL3-2/BC NAME JWiebe EWhitl RGibbs CGrallon For DATE 10/22108 10/27/08 10/28/08 OFFICIAL RECORD COpy

REQUEST FOR ADDITIONAL INFORMATION QUAD CITIES NUCLEAR POWER STATION. UNITS 1 AND 2 DOCKET NOS. 50-254 AND 50-265 In reviewing the Exelon Generation Company's (Exelon's) submittal dated December 21,2007, related to total battery resistance technical specification change, for the Quad Cities Nuclear Power Station (QCNPS), Units 1 and 2, the NRC staff has determined that the following information is needed in order to complete its review:

1. Provide the operability limits for the QCNPS, Units 1 and 2, battery inter-cell connection resistance and the overall battery resistance. Provide supporting documentation and calculations that show how these values were determined.

2. Provide the full calculation for the 70 micro ohm inter-cell connection resistance value that was identified in your initial submittal and later summarized in your August 14, 2008, response to a staff request for information. Also, describe any assumptions that were made when preparing the calculation.

3. Demonstrate that there is adequate voltage (after allowing for voltage drop through the conductors) for safe shutdown equipment to perform the required safety functions when the battery terminal voltage approaches the design limit of 105 volts.