ML19344A024

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Request for Additional Information (RAI) - Limerick Units 1 and 2: TSTF-505, Use of Risk Informed Completion Times (Ricts) for Actions to Be Taken When Limiting Conditions for Operation (Lcos) Are Not Met
ML19344A024
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 12/09/2019
From: V Sreenivas
Plant Licensing Branch 1
To: Bryan Hanson
Exelon Nuclear
Sreenivas V, NRR/DORL/LPLI, 415-2597
References
Download: ML19344A024 (1)


Text

From: Sreenivas, V To: Stewart, Glenn H:(GenCo-Nuc) (Glenn.Stewart@exeloncorp.com)

Cc: Pascarelli, Robert; Danna, James; Biro, Mihaela; Dinsmore, Stephen; Miller, Ed; Robinson, Jay

Subject:

Request for additional information (RAI) - Limerick Units 1 and 2: TSTF-505, Use of risk informed completion times (RICTs) for actions to be taken when limiting conditions for operation (LCOs) are not met.

Date: Monday, December 09, 2019 4:30:00 PM Attachments: Second-Round RAIs_Limerick_TSTF505_Dec2.docx By application dated December 13, 2018 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML18347B366), as supplemented by letter(s) dated February 14, August 12 and August 27, 2019 (ADAMS Accession No.

ML19045A011, ML19224B705, and ML19239A004) Exelon Generation Company, LLC (the licensee) submitted a license amendment request (LAR) for Limerick Generating Station, Units 1 and 2 (LGS). The amendment would revise technical specification (TS) requirements to permit the use of risk-informed completion times (RICTs) for actions to be taken when limiting conditions for operation (LCOs) are not met. The proposed changes are based on Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b, dated July 2, 2018 (ADAMS Accession No. ML18183A493). The U.S. Nuclear Regulatory Commission (NRC or the Commission) issued a final model safety evaluation (SE) approving TSTF-505, Revision 2, on November 21, 2018 (ADAMS Accession No. ML18253A085 and ML18267A259).

Upon review of the first round of RAI response dated August 27, 2019 (ADAMS Accession No. ML19239A004 and ML19224B705), the NRC staff requests the licensee that the follow-up information is needed to complete its review. Please find the enclosed attachment.

Please submit the response no later than January 13, 2020. If you have any questions, please contact me.

______________________

V. Sreenivas, Ph.D., CPM.,

Licensing Project Manager (Operating Reactors)

Limerick and Ginna Nuclear Power Plants USNRC/NRR/DORL/LPL1 (301) 415-2597; vxs1@nrc.gov