RA10-037, Submittal of 2009 Regulatory Commitment Change Summary Report

Submittal of 2009 Regulatory Commitment Change Summary Report

ML101270444
Person / Time
Site:	LaSalle
Issue date:	05/07/2010
From:	Rhoades D Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA10-037
Download: ML101270444 (3)

Text

LaSalle Generating Station www.exeloncorp.com 2601 North zest Road Nuclear Marseilles, IL 61341-9757 10 CFR 50.4 RA10-037 May 7, 2010 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:

2009 Regulatory Commitment Change Summary Report Enclosed is the Exelon Generation Company, LLC, (EGC), 2009 Regulatory Commitment Change Summary Report for LaSalle County Station. Revisions to docketed correspondence were processed using the Nuclear Energy Institute's (NEI) 99-04, Revision 0, "Guidelines for Managing NRC Commitment Changes," dated July 1999.

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

Respectfully, David P. Rhoades Plant Manager LaSalle County Station Attachment cc: Regional Administrator, NRC Region Ill NRC Senior Resident Inspector - LaSalle County Station

Commitment Date of Original Original Commitment Changed Commitment Basis for Change Change Commitment Document Tracking Change Number 08-001 1/20/2009 Generic Letter ComEd defined the scope of This commitment change GL 89-13 defined the service 89-13 the LaSalle Station response removes portions of the WS water systems that were to be to Generic Letter (GL) 89-13 system (fuel pool cooling heat included in the GL 89-13 as encompassing the exchangers and the WS piping, Program as service water following systems or portions which crossties to the FP system or systems that transfer of systems: system), portions of the FC heat from safety-related system (fuel pool cooling heat structures, systems, or 1.) Core Standby Cooling exchangers, fuel pool components to the Ultimate System (CSCS) Pond and emergency make-up lines along Heat Sink. The portions being Intake Structure. with applicable components removed do not perform this from the CSCS system), and function, and this revision 2.) CSCS - Equipment portions of the FP system. simply removes these systems Cooling Water (ECW) system These portions of the service that did not meet the original in its entirety, including water system do not transfer definition for inclusion in order system piping and heat from safety-related to re-focus the program onto the components, which includes structures, systems, or original intent of GL 89-13.

the Residual Heat Removal components to the Ultimate Service Water (RHRSW) and Heat Sink. With regards to the removal of the Diesel Generator the CSCS Pond from the scope (DGCW) Service Water This change also removes the of GL 89-13, it is noted that subsystems. CSCS Pond from the scope of there are no unique GL 89-13 GL 89-13 since it is the Ultimate required actions for the Ultimate 3.) Portions of the Service Heat Sink for LaSalle Station Heat Sink that is not already Water (WS) system [fuel pool and is governed by Technical covered by Technical cooling heat exchangers and Specification requirements. specification requirements.

the WS piping, which crossties to the Fire Protection (FP) system].

4.) Portions of the Fuel Pool Cooling (FC) system (fuel pool cooling heat exchangers, fuel pool make-up lines along with applicable components from the CSCS).

5.) Portions of the FP system.

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Commitment Date of Original Original Commitment Changed Commitment Basis for Change Change Commitment Document Tracking Change Number 09-001 2/6/2009 Bulletin 96-03 LaSalle County Station shall Deferral of the Suppression The impact of deferring LMP-de-sludge and inspect the Chamber de-sludging to the GM-80 "Suppression Chamber wetwell during the next next Unit 2 refueling outage De-Sludging" until L2R13 in refueling outage of each unit (L2R1 3) in 2011. 2011 will not pose a challenge (L1 R08 and L2R08). If to ECCS suction strainer Primary Containment foreign performance under accident material exclusion controls conditions based upon past are demonstrated to be inspection results and effective during these future assessment of the due date inspections, then LaSalle extension per Engineering County Station shall perform Change 373783, which de-sludging on an alternating confirmed sufficient margins to refueling outage frequency. justify the extension of the cleanup. Although the amount of material deposited on the suppression pool floor will increase as a result of this deferral, the absence of sufficient fibrous material in LaSalle's Unit 2 containment ensures that the contribution from fibrous/particulate material (material removed during suppression pool de-sludging) to ECCS suction strainer head loss is negligible for LOCA conditions postulated at LaSalle.

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