ML080990667

Transmittal of Limerick, Units 1 & 2 - License Amendment Request - Revised LPRM Calibration Frequency Supplemental Response - Global Nuclear Fuel Report - Gnf S-0000-0082-2744, Rev. 0, Limerick LPRM Calibration Interval Extension Support.

ML080990667
Person / Time
Site:	Limerick
Issue date:	03/26/2008
From:	Cowan P Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNF S-0000-0082-2744, Rev 0
Download: ML080990667 (2)

Text

Exelon Nuclear www.exeloncorp.com Exeln 200 Exelon Way Nuclear Kennett Square, PA 19348 March 26, 2008 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Limerick Generating Station, Units 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 Docket Nos. 50-352 and 50-353

Subject:

License Amendment Request - Revised LPRM Calibration Frequency Supplemental Response - Global Nuclear Fuel Report - GNF S-0000-0082-2744, Rev. 0, "Limerick LPRM Calibration Interval Extension Support," dated March 4, 2008

Reference:

1) Letter from Pamela B. Cowan, Exelon Generation Company, LLC, to U. S. Nuclear Regulatory Commission, "License Amendment Request -

Revise Local Power Range Monitor Calibration Frequency," dated October 19, 2007

2) Letter from Pamela B. Cowan, Exelon Generation Company, LLC, to U. S. Nuclear Regulatory Commission - License Amendment Request -

Revise LPRM Calibration Frequency, Supplemental Response - Global Nuclear Fuel Report - "Limerick LPRM Calibration Interval Extension Support,"

dated March 14, 2008 By letter dated October 19, 2007 (Reference 1), Exelon Generation Company, LLC (Exelon) requested changes to the Technical Specifications (TS), Appendix A of Facility Operating License Nos. NPF-39 and NPF-85 for Limerick Generating Station (LGS), Units 1 and 2, respectively. The proposed changes would increase the interval between Local Power Range Monitor (LPRM) calibrations from 1000 Effective Full Power Hours (EFPH) to 2000 EFPH.

By letter dated March 14, 2008 (Reference 2), Exelon submitted supplemental information in support of extending the LPRM calibration interval at LGS. The information provided was a Global Nuclear Fuel (GNF) report titled "LimerickLPRM CalibrationInterval Extension Support."

Subsequently, during a teleconference discussion with NRC and Exelon representatives on March 19, 2008, the NRC requested a copy of a document that was referenced in the GNF report (Reference 9 - GNF S-0000-0082-2744) submitted in the Reference 2 letter.

Attachment I transmittedherewith contains SUNSL When separatedfrom the attachment,this k- tW transmittaldocument is decontrolled.

U.S. Nuclear Regulatory Commission License Amendment Request - Revise LPRM Calibration Frequency Docket Nos. NPF-39 and NPF-85 March 26, 2008 Page 2 Accordingly, Attachment 1 contains the requested GNF report GNF S-0000-0082-2744, Rev. 0, "LimerickLPRM CalibrationInterval Extension Support,"dated March 4, 2008, which GNF considers to contain proprietary information. The proprietary information is identified by bracketed text. GNF requests that the proprietary information in Attachment 1 be withheld from public disclosure, in accordance with the requirements of 10 CFR 9.17(a)(4) and 10 CFR 2.390(a)(4). An original signed affidavit supporting this request is included in Attachment 1 to this letter. Attachment 2 to this letter provides a non-proprietary version of the subject GNF report.

Exelon has concluded that the information provided in this supplemental response does not impact the conclusions of the: 1) Technical Analysis, 2) No Significant Hazards Consideration under the standards set forth in 10 CFR 50.92(c), or 3) Environmental Consideration as provided in the Reference 1 submittal.

There are no regulatory commitments contained within this letter. If you have any further questions or require additional information, please contact Richard Gropp at 610-765-5557.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 26th day of March 2008.

Respectfully, Pamela B. Cowan Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC : Global Nuclear Fuel Report GNF S-0000-0082-2744, Rev. 0, "Limerick LPRM Calibration Interval Extension Support" (Proprietary Version and supporting Affidavit) : Global Nuclear Fuel Report GNF S-0000-0082-2744, Rev. 0, "Limerick LPRM Calibration Interval Extension Support" (Non-Proprietary Version) cc: Regional Administrator - NRC Region I w/ Attachment 2 only NRC Senior Resident Inspector- LGS NRC Project Manager, NRR - LGS Director, Bureau of Radiation Protection - Pennsylvania Department of Environmental Protection