ML18135A112

Limerick Units 1 and 2: Request for Information (Rai): Revise Technical Specifications to Lower the Minimum Standby Liquid Control System Pump Flowrate at Limerick Generating Station, Units 1 and 2 - (EPID: L-2018-LLA-0020)

ML18135A112
Person / Time
Site:	Limerick
Issue date:	05/15/2018
From:	V Sreenivas Plant Licensing Branch 1
To:	David Helker, Neff D A Exelon Nuclear
Sreenivas V, NRR/DORL/LPLI, 415-2597
References
EPID L-2018-LLA-0020
Download: ML18135A112 (1)

Text

From:Sreenivas, VTo:Neff, David B:(GenCo-Nuc); Helker, David P:(GenCo-Nuc)Cc:Danna, James; Peng, Shie-Jeng

Subject:

LIMERICK UNITS 1 and 2: REQUEST FOR INFORMATION (RAI): Revise Technical Specifications to Lower theMinimum Standby Liquid Control System Pump Flowrate at Limerick Generating Station, Units 1 and 2 - EPID: L-2018-LLA-0020Date:Tuesday, May 15, 2018 10:34:00 AMBy letter dated January 29, 2018 (ADAMS Accession No. ML18029A509), ExelonGeneration Company, LLC (Exelon, the licensee) submitted License Amendment Requestto Revise Technical Specifications (TSs) to Lower the Minimum Standby Liquid ControlSystem Pump Flowrate at Limerick Generating Station, Units 1 and 2. NRC staff requiresresponse to the following request for additional information (RAIs) to complete the review ofthis LAR. SRXB-RAI-1 Determination of TS SR 4.1.5.c Limit Regulatory Basis - 10 CFR 50.36, "Technical Specifications"Insofar as it requires as discussed in 10 CFR 50.36(c)(3), SRs are requirements relating totest, calibration, or inspection to assure that the necessary quality of systems andcomponents is maintained, that facility operation will be within safety limits, and that theLCOs will be met. RAIAccording to 10 CFR 50.36(c)(3) for TS SR 4.1.5.c, the standby liquid control system(SLCS) pump shall be tested to assure that the quality of pump performance on the flowrate be maintained. Provide justification for the proposed minimum limit of 37 gpm for TSSR 4.1.5.c, relative to past pump performance given that the ASME OM 2004 Code permitsa low limit of 39.7 gpm for required action, Please submit your responses to this RAI by June 13, 2018. If you have any questions,please contact me. _______________________V. Sreenivas, Ph.D., C.P.M.,Licensing Project ManagerGinna and Limerick PlantsNRC/NRR/DORL/LPL1301-415-2597 From:Sreenivas, VTo:Neff, David B:(GenCo-Nuc); Helker, David P:(GenCo-Nuc)Cc:Danna, James; Peng, Shie-Jeng

Subject:

LIMERICK UNITS 1 and 2: REQUEST FOR INFORMATION (RAI): Revise Technical Specifications to Lower theMinimum Standby Liquid Control System Pump Flowrate at Limerick Generating Station, Units 1 and 2 - EPID: L-2018-LLA-0020Date:Tuesday, May 15, 2018 10:34:00 AMBy letter dated January 29, 2018 (ADAMS Accession No. ML18029A509), ExelonGeneration Company, LLC (Exelon, the licensee) submitted License Amendment Requestto Revise Technical Specifications (TSs) to Lower the Minimum Standby Liquid ControlSystem Pump Flowrate at Limerick Generating Station, Units 1 and 2. NRC staff requiresresponse to the following request for additional information (RAIs) to complete the review ofthis LAR. SRXB-RAI-1 Determination of TS SR 4.1.5.c Limit Regulatory Basis - 10 CFR 50.36, "Technical Specifications"Insofar as it requires as discussed in 10 CFR 50.36(c)(3), SRs are requirements relating totest, calibration, or inspection to assure that the necessary quality of systems andcomponents is maintained, that facility operation will be within safety limits, and that theLCOs will be met. RAIAccording to 10 CFR 50.36(c)(3) for TS SR 4.1.5.c, the standby liquid control system(SLCS) pump shall be tested to assure that the quality of pump performance on the flowrate be maintained. Provide justification for the proposed minimum limit of 37 gpm for TSSR 4.1.5.c, relative to past pump performance given that the ASME OM 2004 Code permitsa low limit of 39.7 gpm for required action, Please submit your responses to this RAI by June 13, 2018. If you have any questions,please contact me. _______________________V. Sreenivas, Ph.D., C.P.M.,Licensing Project ManagerGinna and Limerick PlantsNRC/NRR/DORL/LPL1301-415-2597