ML081630567

Request for Additional Information, Proposed Jet Pump Surveillance Changes

ML081630567
Person / Time
Site:	Limerick
Issue date:	06/20/2008
From:	Peter Bamford NRC/NRR/ADRO/DORL/LPLI-2
To:	Pardee C Exelon Generation Co
Bamford, Peter J., NRR/DORL 415-2833
References
TAC MD7386, TAC MD7387
Download: ML081630567 (5)

Text

June 20, 2008 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348

SUBJECT:

LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED JET PUMP SURVEILLANCE CHANGES (TAC NOS. MD7386 AND MD7387)

Dear Mr. Pardee:

By letter dated November 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML073170701), Exelon Generation Company, LLC, submitted a license amendment request (LAR) regarding removal of footnotes requiring original plant startup data to be used as a baseline for evaluating the performance of the jet pumps during surveillances contained in the technical specifications for Limerick Generating Station, Units 1 and 2.

The U.S. Nuclear Regulatory Commission staff has been reviewing your LAR, and has determined that a response to the enclosed Request for Additional Information (RAI) is necessary in order for the staff to complete its review. The questions in the enclosure were sent to Mr. Glenn Stewart of your staff via electronic transmission in draft form on June 9, 2008. The draft RAI was sent to ensure that the questions were understandable, the regulatory basis was clear and to determine if the information was previously docketed. These questions were discussed with your staff in a teleconference on June 11, 2008, and it was agreed that you would provide responses within 45 days of the date of this letter.

Please contact me at 301-415-2833 if you have any questions.

Sincerely,

/ra/

Peter J. Bamford, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353

Enclosure:

As stated cc w/encl: See next page

Limerick Generating Station, Unit Nos. 1 and 2 cc:

Christopher Mudrick Site Vice President Limerick Generating Station Manager Licensing Exelon Generation Company, LLC Exelon Generation Company, LLC 3146 Sanatoga Road Correspondence Control Sanatoga, PA 19464 P.O. Box 160 Kennett Square, PA 19348 Ed Callan, Plant Manager Limerick Generating Station Correspondence Control Desk Exelon Generation Company, LLC Exelon Generation Company, LLC 3146 Santoga Road 200 Exelon Way, KSA 1-N-1 Sanatoga, PA 19464 Kennett Square, PA 19348 Manager Regulatory Assurance - Limerick Regional Administrator, Region I Generating Station U.S. Nuclear Regulatory Commission Exelon Generation Company, LLC 475 Allendale Road 3146 Sanatoga Road King of Prussia, PA 19406 Sanatoga, PA 19464 Senior Resident Inspector Senior Vice President - Mid-Atlantic U.S. Nuclear Regulatory Commission Operations Limerick Generating Station Exelon Generation Company, LLC P.O. Box 596 200 Exelon Way, KSA 3-N Pottstown, PA 19464 Kennett Square, PA 19348 Library Chief Operating Officer- Exelon Nuclear U.S. Nuclear Regulatory Commission Exelon Generation Company, LLC Region I 4300 Winfield Road 475 Allendale Road Warrenville, IL 60555 King of Prussia, PA 19406 Senior Vice President -Operations Support Director, Bureau of Radiation Protection Exelon Generation Company, LLC Pennsylvania Dept. of Environmental 4300 Winfield Road Protection Warrenville, IL 60555 Rachel Carson State Office Building P.O. Box 8469 Vice President Harrisburg, PA 17105-8469 Licensing and Regulatory Affairs Exelon Generation Company, LLC Chairman 4300 Winfield Road Board of Supervisors of Limerick Township Warrenville, IL 60555 646 West Ridge Pike Linfield, PA 19468 Director, Licensing and Regulatory Affairs Exelon Generation Company, LLC Dr. Judith Johnsrud Correspondence Control National Energy Committee P.O. Box 160 Sierra Club Kennett Square, PA 19348 433 Orlando Avenue State College, PA 16803

Limerick Generating Station, Unit Nos. 1 and 2 cc:

J. Bradley Fewell, Esquire Associate General Counsel Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

June 20, 2008 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348

SUBJECT:

LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED JET PUMP SURVEILLANCE CHANGES (TAC NOS. MD7386 AND MD7387)

Dear Mr. Pardee:

By letter dated November 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML073170701), Exelon Generation Company, LLC, submitted a license amendment request (LAR) regarding removal of footnotes requiring original plant startup data to be used as a baseline for evaluating the performance of the jet pumps during surveillances contained in the technical specifications for Limerick Generating Station, Units 1 and 2.

The U.S. Nuclear Regulatory Commission staff has been reviewing your LAR, and has determined that a response to the enclosed Request for Additional Information (RAI) is necessary in order for the staff to complete its review. The questions in the enclosure were sent to Mr.

Glenn Stewart of your staff via electronic transmission in draft form on June 9, 2008. The draft RAI was sent to ensure that the questions were understandable, the regulatory basis was clear and to determine if the information was previously docketed. These questions were discussed with your staff in a teleconference on June 11, 2008, and it was agreed that you would provide responses within 45 days of the date of this letter.

Please contact me at 301-415-2833 if you have any questions.

Sincerely,

/ra/

Peter J. Bamford, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353

Enclosure:

As stated cc w/encl: See next page DISTRIBUTION:

PUBLIC LPL1-2 R/F RidsNrrPMPBamford RidsNrrLAABaxter RidsOgcRp RidsAcrsAcnw&mMailCenter RidsNrrDorlLpl1-2 RidsRgn1MailCenter RidsNrrDorlDpr Accession Number: ML081630567 OFFICE LPL1-2/PM LPL1-2/LA LPL1-2/BC NAME PBamford ABaxter HChernoff DATE 6/11/08 6/17/08 6/20/08 Official Record Copy

REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED CHANGES TO THE TECHNICAL SPECIFICATIONS SURVEILLANCE REQUIREMENT 4.4.1.2 - JET PUMPS LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-352 AND 50-353 By letter dated November 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML073170701), Exelon Generation Company, LLC, submitted a license amendment request (LAR) regarding a change to technical specification (TS) surveillance requirement 4.4.1.2 - Jet Pumps. Specifically the LAR requests to delete footnotes that require jet pump performance to be compared to original plant startup data.

The Nuclear Regulatory Commission staff has been reviewing the submittal and has determined that additional information is needed to complete its review.

1.) The LAR, Section 4.0, states, A determination will be made whether or not to change the existing criteria. On what basis will the determination to re-baseline be made? If there is an approved topical report that will be utilized, please identify the document. If the criteria used to make a re-baseline determination is specific to Limerick Generating Station (LGS), please provide a summary of the methodology.

2.) In order to ensure that a re-baseline appropriately reflects the changes in core hydraulics due to refueling activities or configuration changes as described in the LAR, are inspections of the jet pump assemblies performed prior to a planned re-baseline? If they are planned, please provide a summary of these inspection activities. If not, provide a justification as to why they would not be required.

3.) How will the re-baseline criteria/inspection plans be controlled?

4.) The existing wording in the LGS TSs is unusual as compared to other similar Boiling Water Reactors (BWRs). Is there anything specific to the LGS design or operation that would differentiate it from other similar BWRs with respect to the baseline for jet pump surveillance acceptance criteria?