RS-13-063, Additional Information Supporting License Amendment Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit for Cycle 15

Additional Information Supporting License Amendment Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit for Cycle 15

ML13058A446
Person / Time
Site:	LaSalle
Issue date:	02/26/2013
From:	Gullott D Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RS-13-063
Download: ML13058A446 (2)

Text

A4300 Winfield Road AWarrenville, IL 60555

- Exelon Generation, 630 657 2000 Office RS-13-063 10 CFR 50.90 February 26, 2013 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-001 LaSalle County Station, Unit 2 Facility Operating License No. NPF-18 NRC Docket No. 50-374

Subject:

Additional Information Supporting License Amendment Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit -

LaSalle County Station, Unit 2, Cycle 15

References:

1) Letter from D. M. Gullott (Exelon Generation Company, LLC) to U. S. Nuclear Regulatory Commission, "Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit - LaSalle County Station, Unit 2, Cycle 15," dated October 11, 2012

2) Letter from D. M. Gullott (Exelon Generation Company, LLC) to U. S. Nuclear Regulatory Commission, "Response to Request for Additional Information Supporting License Amendment Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit - LaSalle County Station, Unit 2, Cycle 15," dated January 17, 2013

3) Letter from D. M. Gullott (Exelon Generation Company, LLC) to U. S. Nuclear Regulatory Commission, "Additional Information Supporting License Amendment Request to Revise Technical Specification 2.1.1.2 for Minimum Critical Power Ratio Safety Limit - LaSalle County Station, Unit 2, Cycle 15,"

dated February 20, 2013 In Reference 1, Exelon Generation Company, LLC, (EGC) submitted a license amendment request proposing to revise the safety limit minimum critical power ratio (SLMCPR) values contained in Technical Specifications (TS) 2.1.1, "Reactor Core SLs," for LaSalle County Station (LSCS), Unit 2. The proposed changes support upcoming Cycle 15 operation for LSCS, Unit 2.

EGC supplemented Reference 1 with letters dated January 17 and February 20, 2013 (References 2 and 3, respectively).

February 26, 2013 U. S. Nuclear Regulatory Commission Page 2 On February 20, 2013, the U. S. Nuclear Regulatory Commission (NRC) notified EGC that they will be issuing a license condition to support approval of References 1, 2, and 3.

The license condition, as proposed, will state:

Use of Global Nuclear Fuel - Americas, LLC, Report, NEDC-33106P, "GEXL97 Correlation for Atrium-10 Fuel," Revision 4, August 2012, for LaSalle Unit 2 shall be limited to the same range of applicability for calculations of Safety Limit Minimum Critical Power Ratios as documented in NRC letter from W. A. Macon, Jr. (NRC) to J. L. Skolds, "LaSalle County Station, Units 1 and 2 - Correction to Issuance of Amendments (TAC Nos. MB9888 and MB9889)," dated January 14, 2004 (ADAMS Accession Number ML040130278).

EGC has reviewed the proposed license condition. EGC understands and acknowledges that the NRC plans to issue the license condition.

EGC has reviewed the information supporting a finding of no significant hazards consideration and the environmental consideration that were previously provided to the NRC in Attachment 1 of Reference 1. The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the additional information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.

There are no regulatory commitments contained in this submittal. Should you have any questions concerning this letter, please contact Ms. Lisa A. Simpson at (630) 657-2815.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 26th day of February 2013.

Respectfully, David M. Gullott Manager - Licensing Exelon Generation Company, LLC cc: Illinois Emergency Management Agency - Division of Nuclear Safety