ML080230046

Dresden and Quad Cities - Request for Additional Information Related to Turbine Condenser Vacuum - Low Scram Setpoint Change

ML080230046
Person / Time
Site:	Dresden, Quad Cities
Issue date:	01/30/2008
From:	Joel Wiebe NRC/NRR/ADRO/DORL/LPLIII-2
To:	Pardee C G Exelon Generation Co
Wiebe, J
References
TAC MD6250, TAC MD6251, TAC MD6252, TAC MD6253
Download: ML080230046 (3)

Text

January 30, 2008

Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3, AND QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO TURBINE CONDENSER VACUUM - LOW SCRAM SETPOINT CHANGE (TAC NOS. MD6250, MD6251, MD6252 AND MD6253)

Dear Mr. Pardee:

By letter to the Nuclear Regulatory Commission (NRC) dated August 1, 2007, Exelon Generation Company, LLC submitted a request to revise the turbine condenser vacuum - low scram instrumentation function, for the Dresden Nuclear Power Station, Units 2 and 3, and Quad Cities Nuclear Power Station, Units 1 and 2.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested was provided in preliminary form by email, to John Schrage on December 4, 2007 (Agencywide Documents Access and Management System Accession No. ML080230702). During discussions with your staff on January 3 and January 10, 2008, the NRC staff confirmed that the requested information was needed to complete the review. During a discussion with your staff on January 24, 2008, it was agreed that you would provide a response by February 25, 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, /RA/

Joel S. Wiebe, Senior Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Docket Nos. 50-237, 50-249, 50-254, and 50-265

cc: See next page January 30, 2008

Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3, AND QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO TURBINE CONDENSER VACUUM - LOW SCRAM SETPOINT CHANGE (TAC NOS. MD6250, MD6251, MD6252 AND MD6253)

Dear Mr. Pardee:

By letter to the Nuclear Regulatory Commission (NRC) dated August 1, 2007, Exelon Generation Company, LLC submitted a request to revise the turbine condenser vacuum - low scram instrumentation function, for the Dresden Nuclear Power Station, Units 2 and 3, and Quad Cities Nuclear Power Station, Units 1 and 2.

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested was provided in preliminary form by email, to John Schrage on December 4, 2007 (Agencywide Documents Access and Management System Accession No. ML080230702). During discussions with your staff on January 3 and January 10, 2008, the NRC staff confirmed that the requested information was needed to complete the review. During a discussion with your staff on January 24, 2008, it was agreed that you would provide a response by February 25, 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, /RA/ Joel S. Wiebe, Senior Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Docket Nos. 50-237, 50-249, 50-254, and 50-265

cc: See next page

DISTRIBUTION:

PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMJWiebe RidsNrrLAEWhitt RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr ADAMS Accession Number: ML080230046 OFFICE LPL3-2/PM LPL3-2/LA LPL3-2/BC

NAME JWiebe EWhitt RGibbs DATE 1/29/08 1/29/08 1/30/08 OFFICIAL RECORD COPY Dresden and Quad Cities Nuclear Power Stations

cc: Corporate Distribution Exelon Generation Company, LLC via e-mail

Dresden Distribution Exelon Generation Company, LLC via e-mail

Quad Cities Distribution Exelon Generation Company, LLC via e-mail

Dresden Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail

Chairman Grundy County Board via e-mail

Illinois Emergency Management Agency Division of Disaster Assistance & Preparedness via e-mail

Quad Cities Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail

David C. Tubbs MidAmerican Energy Company via e-mail

Managing Senior Attorney MidAmerican Energy Company via e-mail

Chairman Rock Island County Board of Supervisors via e-mail