ML061500024

RAI, Amendment Application to Revise Technical Specifications on DC Electrical System Requirements

ML061500024
Person / Time
Site:	Susquehanna
Issue date:	05/31/2006
From:	Richard Guzman NRC/NRR/ADRO/DORL/LPLA
To:	Mckinney B Susquehanna
tsw1
References
TAC MC5153, TAC MC5154
Download: ML061500024 (7)

Text

May 31, 2006 Mr. Britt T. McKinney Sr. Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Blvd., NUCSB3 Berwick, PA 18603-0467

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) - SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 (SSES 1 AND 2) - REQUEST FOR ADDITIONAL INFORMATION REGARDING AMENDMENT APPLICATION TO REVISE TECHNICAL SPECIFICATIONS ON DC ELECTRICAL SYSTEM REQUIREMENTS (TAC NOS. MC5153 AND MC5154)

Dear Mr. McKinney:

On October 19, 2005, the Nuclear Regulatory Commission (NRC) requested additional information regarding your submittal dated November 9, 2004, concerning your proposed Technical Specification (TS) changes based on TS Task Force (TSTF) Change Traveler TSTF-360, Revision 1, to the SSES 1 and 2 TS sections: TS 3.8.4, DC Sources - Operating, TS 3.8.5, DC Sources - Shutdown, TS 3.8.6, Battery Cell Parameters, and TS 5.5, Program and Manuals. You provided that information in a letter dated December 5, 2005. The NRC staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. The questions were discussed with your staff during a teleconference on April 7, 2006. As agreed to by your staff, we request you respond within 30 days of the date of this letter.

If you have any questions, please contact me at 301-415-1030.

Sincerely,

/RA/

Richard V. Guzman, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-387 and 50-388

Enclosure:

RAI cc w/encl: See next page

ML061500024

• See RAI memo OFFICE LPL1-1/PM LPL1-1/LA EEEB/BC LPL1-1/BC NAME RGuzman SLittle GWilson* RLaufer DATE 5/30/06 5/30/06 5/31/06 SE DTD 2/24/06 5/31/06 Susquehanna Steam Electric Station, Unit Nos. 1 and 2 cc:

Robert A. Saccone Luis A. Ramos Vice President - Nuclear Operations Community Relations Manager, PPL Susquehanna, LLC Susquehanna 769 Salem Blvd., NUCSB3 PPL Susquehanna, LLC Berwick, PA 18603-0467 634 Salem Blvd., SSO Berwick, PA 18603-0467 Aloysius J. Wrape, III General Manager - Performance Bryan A. Snapp, Esq Improvement and Oversight Assoc. General Counsel PPL Susquehanna, LLC PPL Services Corporation Two North Ninth Street, GENPL4 Two North Ninth Street, GENTW3 Allentown, PA 18101-1179 Allentown, PA 18101-1179 Terry L. Harpster Supervisor - Document Control Services General Manager - Plant Support PPL Susquehanna, LLC PPL Susquehanna, LLC Two North Ninth Street, GENPL4 769 Salem Blvd., NUCSA4 Allentown, PA 18101-1179 Berwick, PA 18603-0467 Richard W. Osborne Rocco R. Sgarro Allegheny Electric Cooperative, Inc.

Manager - Nuclear Regulatory Affairs 212 Locust Street PPL Susquehanna, LLC P.O. Box 1266 Two North Ninth Street, GENPL4 Harrisburg, PA 17108-1266 Allentown, PA 18101-1179 Director, Bureau of Radiation Protection Walter E. Morrissey Pennsylvania Department of Supervising Engineer Environmental Protection Nuclear Regulatory Affairs Rachel Carson State Office Building PPL Susquehanna, LLC P.O. Box 8469 769 Salem Blvd., NUCSA4 Harrisburg, PA 17105-8469 Berwick, PA 18603-0467 Senior Resident Inspector Michael H. Crowthers U.S. Nuclear Regulatory Commission Supervising Engineer P.O. Box 35, NUCSA4 Nuclear Regulatory Affairs Berwick, PA 18603-0035 PPL Susquehanna, LLC Two North Ninth Street, GENPL4 Regional Administrator, Region 1 Allentown, PA 18101-1179 U.S. Nuclear Regulatory Commission 475 Allendale Road Steven M. Cook King of Prussia, PA 19406 Manager - Quality Assurance PPL Susquehanna, LLC Board of Supervisors 769 Salem Blvd., NUCSB2 Salem Township Berwick, PA 18603-0467 P.O. Box 405 Berwick, PA 18603-0035

Susquehanna Steam Electric Station, Unit Nos. 1 and 2 cc:

Dr. Judith Johnsrud National Energy Committee Sierra Club 443 Orlando Avenue State College, PA 16803

REQUEST FOR ADDITIONAL INFORMATION REGARDING AMENDMENT APPLICATION TO REVISE TECHNICAL SPECIFICATIONS ON DC ELECTRICAL SYSTEM REQUIREMENTS SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 (SSES 1 AND 2)

PPL SUSQUEHANNA, LLC DOCKET NOS. 50-387 AND 50-388 The Nuclear Regulatory Commission (NRC) staff is reviewing the proposed license amendment for PPL Susquehanna, LLC (PPL, the licensee) to Facility Operating License No. NPF-14 and NPF-22 related to proposed changes based on TS Task Force (TSTF) Change Traveler TSTF-360, Revision 1, to the SSES 1 and 2 Technical Specification (TS) sections: TS 3.8.4, DC Sources - Operating, TS 3.8.5, DC Sources - Shutdown, TS 3.8.6, Battery Cell Parameters, and TS 5.5, Program and Manuals. The NRC staff has determined the additional information requested below will be needed to complete its review.

1) Specific gravity monitoring is used to measure the strength of a battery cell's electrolyte, which is an important component of the battery's chemical reaction, and provides an indication of the battery's state-of-charge. Whereas, float current monitoring may or may not provide an accurate indiction of the battery's state-of-charge. Float current monitoring is based on a calculation that is dependent on several variables. The NRC staff has a concern with two variables of this calculation: the applied charging voltage and cell resistance. A change in either of these variables may provide a false indication of the battery's state-of-charge. Provide assurance that float current monitoring will provide an accurate indiction of the battery's state-of-charge.

2) The battery pilot cell is representative of the average battery cell in the battery. Provide assurance that a battery with a battery pilot cell with a voltage of 2.07 volts or slightly greater will remain capable of performing its minimum designed function.

3) As mentioned in No. 2, the battery pilot cell is representative of the average battery cell in the battery. Provide assurance that a battery with a battery pilot cell electrolyte temperature slightly greater than or equal to the minimum established design limit will remain capable of performing its minimum designed function.

4) Consistency with the Institute of Electrical and Electronics Engineers (IEEE) Standard 450-1995, IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications, was used throughout your submittal as the justification for approval. The most recent version of IEEE Standard 450 that has been endorsed by the NRC through Regulatory Guides (RGs) is IEEE Standard 450-1975. The RGs of mention are: RG 1.128, Installation, Design, and Installation of Large Lead Storage Batteries for Nuclear Power Plants, and RG 1.129, Enclosure

Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Nuclear Power Plants.

a. Provide a plant-specific technical justification for each proposed change in lieu of referencing consistency with the IEEE Standard 450-1995.

b. Provide a copy of the proposed battery monitoring and maintenance program identified in TS 5.5.14.