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

{{Adams
| number = ML101270444
| issue date = 05/07/2010
| title = Submittal of 2009 Regulatory Commitment Change Summary Report
| author name = Rhoades D
| author affiliation = Exelon Generation Co, LLC, Exelon Nuclear
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000373, 05000374
| license number = NPF-011, NPF-018
| contact person = 
| case reference number = RA10-037
| document type = Letter type:RA
| page count = 3
}}

=Text=
{{#Wiki_filter: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.
Page 1 of 2

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.
Page 2of2}}