RA11-025, Regulatory Commitment Change Summary Report

Regulatory Commitment Change Summary Report

ML111450756
Person / Time
Site:	LaSalle
Issue date:	05/13/2011
From:	Karaba P Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA11-025
Download: ML111450756 (3)

Text

LaSalle Generating Station www.exeloncorp.corn 2601 North 21st Road Nuclear Marseilles, IL 61341-9757 10 CFR 50.4 RA1 1-025 May 13, 2011 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374

Subject:

2010 Regulatory Commitment Change Summary Report Enclosed is the Exelon Generation Company, LLC, (EGC), 2010 Regulatory Commitment Change Summary Report for LaSalle County Station. Revisions to docketed correspondence were processed using the Nuclear Energy Institute's (NEI) 99 -04, "Guidelines for Managing NRC Commitment Changes," Revision 0, dated July 1999.

Should you have any questions concerning this letter, please contact Mr. Terrence W. Simpkin at (815) 415-2800.

Respectfully, Peter J. Karaba Plant Manager LaSalle County Station Attachment cc: Regional Administrator, NRC Region III NRC Senior Resident Inspector - LaSalle County Station

2010 Requlatorv Commitment Chance Summary Resort Commitment Date of Original Original Commitment Changed Commitment Basis for Change Change Commitment Document Trackin g No. Chan ge 10-001 4/26/2010 LaSalle Unit 1 LaSalle originally committed to LaSalle is tracking control rod As part of the reload planning License tracking control rod blade blade exposure history on a fuel process, the amount of Condition exposure history on a monthly cycle basis (i.e., prior to each exposure for each control blade 2.C(13), basis in accordance with fuel cycle), which is in is projected to the end of the LaSalle Unit 2 procedure, LTP-1600-29 accordance with station cycle and a minimum of 2 License "Control Blade End-of-Life procedure LTP-1600-29 cycles in the future. Past and Condition Projection." Exposure records "Control Rod End-of-Life current rod pattern information 2.C(6) and IE are maintained on 3-foot Projection." Exposure records is used to determine the amount Bulletin 79-26, segments of each blade (4 are maintained on 3-foot of blade exposure gained each Revision 1 segments per blade) on a segments of each blade (4 cycle. This information is used continuing basis. segments per blade) on a to ensure that all control blades continuing basis. do not exceed their end-of-life On May 4, 2004, the original (EOL) criteria during the current commitment was changed per This change to the commitment and upcoming fuel cycles. Each Commitment Change Tracking frequency provides compliance blade type has EOL criteria that

1. 04-001. The revised with IEB 79-26, Revision 1 as ensure sufficient B-10 remains commitment reads "LaSalle is the IEB requires the control in the blade for negative tracking control rod blade blade exposure be tracked on a reactivity. Control blade exposure history on a quarterly continuing basis, and did not replacements and shuffle are (92 days) basis in accordance specify the frequency interval. planned from this information as with procedure, LTP-1600-29 Control blade exposure tracking part of the outage core "Control Blade End-of-Life and projections are performed component replacement. This Projection." Exposure records in accordance with the following ensures the EOL criteria are are maintained on 3-foot procedures and guidelines: (1.) met for the planned cycles. The segments of each blade (4 NF-AA-110 "Reload Control fuel cycles and blade segments per blade) on a Procedure." (2.) NF-AB-135- replacements are designed so continuing basis." 1410 "Control Blade Monitoring that there is sufficient margin of and Replacement (BWR)." (3.) at least 10% to the EOL criteria.

LTP-1600-29 "Control Blade Additionally, once the cycle End-of-Life Projection." operation begins, any planned changes to the target rod pattern are evaluated as required per NF-AB-135 Cycle Management and Operations Support (BWR)" to ensure the EOL criteria continue to be met.

If a rod needs to be inserted Page 1 of 2

2010 Reaulatorv Commitment Chance Summary Resort such as for leaker suppression or rod inoperability, the effect on the EOL criteria is immediately evaluated by Nuclear Fuels and Site Engineering. If projections show that the EOL limits will be approached, corrective actions including a detailed blade exposure evaluation and SDM calculations are performed.

LTP-1600-29 projections are performed to ensure all blades meet the EOL limits for the entire fuel cycle.

In conclusion, documentation of the control blade exposure tracking per LTP-1 600-29 on a fuel basis (i.e., prior to each fuel cycle) provides an acceptable monitoring interval for this surveillance to ensure control blade operability is maintained.

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