RS-15-278, Supplement to Request for Additional Information Regarding License Amendment Request for a One-Time Extension of the Shutdown Service Water Division 2 Subsystem Completion Time

Supplement to Request for Additional Information Regarding License Amendment Request for a One-Time Extension of the Shutdown Service Water Division 2 Subsystem Completion Time

ML15293A554
Person / Time
Site:	Clinton
Issue date:	10/20/2015
From:	Simpson P Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RS-15-278, TAC MF6705
Download: ML15293A554 (3)

Text

4300 Winfield Road Warrenville, IL 60555 Exelon Generation _ 630 657 2000 Of lice RS-15-278 10 CFR 50.90 October 20, 2015 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Supplement to Request for Additional Information Regarding License Amendment Request for a One-Time Extension of the Shutdown Service Water Division 2 Subsystem Completion Time

References:

(1) Letter from Patrick R. Simpson (Exelon Generation Company, LLC) to U. S.

NRC, "Exigent License Amendment Request for a One-Time Extension of the Shutdown Service Water Division 2 Subsystem Completion Time,"

dated September 1o, 2015 (2) Letter from Eva Brown (U. S. NRC) to Bryan C. Hanson (Exelon Generation Company, LLC), "Clinton Power Station, Unit No. 1 - Request for Additional Information Related to One-Time Extension of Completion Time for Shutdown Service Water (TAC No. MF6705) (RS-15-264),u dated September 25, 2015 (3) Letter from Patrick R. Simpson (Exelon Generation Company, LLC) to U. S.

NRC, "Response to Request for Additional Information Regarding License Amendment Request for a One-Time Extension of the Shutdown Service Water Division 2 Subsystem Completion Time," dated September 30, 2015 (4) Email from Timothy A Byam (Exelon Generation Company, LLC) to Eva Brown (U.S. NRC), "Clean TS Pages for One-Time SX AOT Extension,"

dated October 16, 2015 In Reference 1, Exelon Generation Company, LLC, (EGC) requested, in accordance with 10 CFR 50.90, "Application for amendment of license, construction permit, or early site permit,"

NRC approval of a proposed one-time extension of the Completion Time (CT) to restore the Division 2 Shutdown Service Water (SX) subsystem to Operable status associated with Technical Specifications (TS) Limiting Condition for Operation (LCO) 3.7.1, "Division 1 and 2 Shutdown Service Water (SX) Subsystems and Ultimate Heat Sink (UHS)," from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 7 days. As a part of this amendment request marked-up TS pages with the proposed changes indicated were provided.

October 20, 2015 U. S. Nuclear Regulatory Commission Page2 In Reference 2, the NRC requested that EGC provide additional information to support their review of the subject amendment request (i.e., Reference 1). The requested information was provided in Reference 3. In response to one of the requests in Reference 2, new mark-ups were provided indicating the proposed changes to CPS TS 3.7.1. The marked-up TS pages provided in Reference 3 were numbered pages 3.7-1 through 3.7-3.

Subsequent to submittal of Reference 3, the NRC requested clean TS pages reflecting the agreed upon revised wording from EGC. These pages were provided by Reference 4. As the final TS pages were being prepared for transmittal to the NRC, it was discovered, that due to an oversight, the marked-up TS pages were incorrectly numbered. TS page 3.7-3 was already assigned to TS 3.7.2 and therefore, it was necessary to renumber the pages provided for issuance with the subject amendment. As a result, the clean TS pages provided to the NRC were numbered 3.7-1, 3.7-2, and 3.7-2a (i.e., previously provided marked-up page 3.7-3 was renumbered as 3.7-2a). This repagination ensured the existing page numbers for the remaining pages in TS Section 3.7 did not change as a result of the amendment being issued. In addition, the CPS TS pages are duplexed with TS 3.7.2 starting on an odd numbered page (i.e., current TS page 3.7-3) on the right hand side of the Operating License Manual. In order to ensure TS Page 3.7-3 remains on the right hand side of the Operating License Manual, it was necessary to also issue a page 3.7-2b as part of the clean TS pages provided to the NRC in Reference 4.

Page 3.7-2b only contains the statement "This page intentionally left blank."

EGC has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRC in Attachment 1 of Reference 1. The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the additional information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.

There are no regulatory commitments contained with this letter. If you should have any questions concerning this letter, please contact Mr. Timothy A. Byam at (630) 657-2818.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 20th day of October 2015.

Patrick R. Simpson Manager - Licensing Exelon Generation Company, LLC

October 20, 2015 U. S. Nuclear Regulatory Commission Page 3 cc: NRG Regional Administrator, Region Ill NRG Senior Resident Inspector- Clinton Power Station Illinois Emergency Management Agency- Division of Nuclear Safety