ML050240134

Request for Additional Information (Rai), Minimum Critical Power Ratio Safety Limits and Reference Changes

ML050240134
Person / Time
Site:	Susquehanna
Issue date:	01/24/2005
From:	Richard Guzman NRC/NRR/DLPM/LPD1
To:	Shriver B Susquehanna
Guzman R, NRR/DLPM 415-1030
References
TAC MB5610
Download: ML050240134 (5)

Text

January 24, 2005 Mr. Bryce L. Shriver President-PPL Generation and Chief Nuclear Officer PPL Susquehanna, LLC Two North Ninth Street, GENTW15 Allentown, PA 18101-1179

SUBJECT:

SUSQUEHANNA STEAM ELECTRIC STATION, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) - MINIMUM CRITICAL POWER RATIO SAFETY LIMITS AND REFERENCE CHANGES (TAC NO. MB5610)

Dear Mr. Shriver:

In reviewing your application of September 8, 2004, the U.S. Nuclear Regulatory Commission staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. We discussed this issue with your staff during a conference call on January 19, 2004. As we indicated during our conversation, we are enclosing a formal RAI.

The enclosed questions have been revised from the draft RAI to exclude the questions that were answered during the conference call. 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, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-388

Enclosure:

RAI cc w/encl: See next page

January 24, 2005 Mr. Bryce L. Shriver President-PPL Generation and Chief Nuclear Officer PPL Susquehanna, LLC Two North Ninth Street, GENTW15 Allentown, PA 18101-1179

SUBJECT:

SUSQUEHANNA STEAM ELECTRIC STATION, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) - MINIMUM CRITICAL POWER RATIO SAFETY LIMITS AND REFERENCE CHANGES (TAC NO. MB5610)

Dear Mr. Shriver:

In reviewing your application of September 8, 2004, the U.S. Nuclear Regulatory Commission staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. We discussed this issue with your staff during a conference call on January 19, 2004. As we indicated during our conversation, we are enclosing a formal RAI.

The enclosed questions have been revised from the draft RAI to exclude the questions that were answered during the conference call. 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, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-388

Enclosure:

RAI cc w/encl: See next page DISTRIBUTION:

Public OGC GMatakas, Rgn-1 RGuzman DLPM DPR PDI-1 R/F RLaufer MO'Brien THuang ACRS FAkstulewicz Accession Number: ML05240134 OFFICE PDI-1/PM PDI-2/LA SRXB/SC PDI-1/SC NAME RGuzman MO'Brien FAkstulewicz RLaufer DATE 01/24/05 01/24/05 01/24/05 01/24/05 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION RELATING TO MINIMUM CRITICAL POWER RATIO (MCPR)

SAFETY LIMITS AND REFERENCE CHANGES SUSQUEHANNA STEAM ELECTRIC STATION, UNIT 2 DOCKET NO. 50-388 The Nuclear Regulatory Commission (NRC) staff is reviewing the proposed license amendment request to Facility Operating License No. NPF-22, relating to MCPR safety limits and reference changes dated September 8, 2004, and has found further clarification is needed as follows:

1. Please provide a figure to show the reference core loading pattern for Cycle 13 operation and identify any difference from Cycle 12 core design. Provide a detailed description of how to determine the final core and fuel design to achieve a 24-month fuel reload cycle.

2. In Technical Specification (TS) 5.6.5.b, Core Operating Limits Report, there are 11 of 19 approved methodologies to support TS 3.2.2. Please identify the input parameters in a flow chart (as shown in Figure 1 of your letter dated April 27, 2004) supported by the appropriate approved methodologies to support TS 3.2.2 calculations for this MCPR safety limit analysis for Cycle 13 operation. Also identify the design record file to support this TS amendment.

3. Please identify any significant contributing parameters such as power distribution uncertainty, channel bow, and others, which will impact the MCPR safety limit calculation in a table, and quantify their impact on the final MCPR safety limit values for Cycle 13.

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

Britt T. McKinney Michael H. Crowthers Vice President - Nuclear Site Operations Supervising Engineer PPL Susquehanna, LLC Nuclear Regulatory Affairs 769 Salem Blvd., NUCSB3 PPL Susquehanna, LLC Berwick, PA 18603-0467 Two North Ninth Street, GENPL4 Allentown, PA 18101-1179 Robert A. Saccone Vice President - Nuclear Operations Dale F. Roth PPL Susquehanna, LLC Manager - Quality Assurance 769 Salem Blvd., NUCSB3 PPL Susquehanna, LLC Berwick, PA 18603-0467 769 Salem Blvd., NUCSB2 Berwick, PA 18603-0467 Aloysius J. Wrape, III General Manager - Performance Luis A. Ramos Improvement and Oversight Community Relations Manager, PPL Susquehanna, LLC Susquehanna Two North Ninth Street, GENPL4 PPL Susquehanna, LLC Allentown, PA 18101-1179 634 Salem Blvd., SSO Berwick, PA 18603-0467 Terry L. Harpster General Manager - Plant Support Bryan A. Snapp, Esq PPL Susquehanna, LLC Assoc. General Counsel 769 Salem Blvd., NUCSA4 PPL Services Corporation Berwick, PA 18603-0467 Two North Ninth Street, GENTW3 Allentown, PA 18101-1179 Gregory F. Ruppert General Manager - Nuclear Engineering Supervisor - Document Control Services PPL Susquehanna, LLC PPL Susquehanna, LLC 769 Salem Blvd., NUCSB3 Two North Ninth Street, GENPL4 Berwick, PA 18603-0467 Allentown, PA 18101-1179 Rocco R. Sgarro Richard W. Osborne Manager - Nuclear Regulatory Affairs Allegheny Electric Cooperative, Inc.

PPL Susquehanna, LLC 212 Locust Street Two North Ninth Street, GENPL4 P.O. Box 1266 Allentown, PA 18101-1179 Harrisburg, PA 17108-1266 Walter E. Morrissey Director - Bureau of Radiation Protection Supervising Engineer Pennsylvania Department of Nuclear Regulatory Affairs Environmental Protection PPL Susquehanna, LLC P.O. Box 8469 769 Salem Blvd., NUCSA4 Harrisburg, PA 17105-8469 Berwick, PA 18603-0467 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O.

Box 35, NUCSA4 Berwick, PA 18603-0035

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

Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Board of Supervisors Salem Township P.O. Box 405 Berwick, PA 18603-0035 Dr. Judith Johnsrud National Energy Committee Sierra Club 443 Orlando Avenue State College, PA 16803