ML17142A031
| ML17142A031 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/16/2017 |
| From: | Callan E Exelon Generation Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| GL-04-002, TMI-17-051 | |
| Download: ML17142A031 (3) | |
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TMl-17-051 May 16, 2017 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Three Mile Island Nuclear Stat!on, Unit 1 Renewed Facility Operating License No. DPR-50 NRC Docket No. 50-289 10 CFR 50.54(f)
Subject:
Supplement to Three Mile Island Nuclear Station, Unit1 (TMI) Letter, TMl-12-148, TMI, Unit 1 Plant-Specific Path and Schedule for Resolution of Generic Letter 2004-02," dated May 16, 2013
References:
( 1)
TMI Letter TMl-12-148, "TMI, Unit 1 Plant-Specific Path and Schedule for Resolution of Generic Letter 2004-02," dated May 16, 2013 In Reference 1 TMI provided a plant-specific path and schedule to address SECY 0093, "Closure Options for Generic Safety Issue (GSl)-191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance," dated July 9, 2012, and GL 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors," dated September 13, 2004. In addition, a list of regulatory commitments was provided in Attachment 2 of the referenced letter., The purpose of this letter is to communicate a change to the following commitment:
Commitment EGC will submit a final updated supplemental response to support closure of GL 2004-02 for TMI, Unit 1.
Committed Date June 1, 2017 TMI is an Option 2A plant with a calculated in-vessel fiber debris bypass of 19.66 grams/fuel assembly, which exceeds the NRC acceptance limit of 15 grams/fuel assembly. Therefore, WCAP-17788, "Comprehensive Analysis and Test Program for GSl-191' [Generic Safety lssue-191] Closure," methodology is required to properly close out GL 2004-02 and GSl-191. WCAP-17788 is currently under NRC review with forecasted approval in 2018. The final calculations for in-vessel fiber debris, as well as the existing ECCS flow sump performance final calculations, will be performed together i
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U.S. Nuclear Regulatory Commission Supplement to Three Mile Island Nuclear Station, Unit1 {TMI) Letter, TMI-12-148 May 15, 2017 Page2 to allow efficient utilization of engineering resources. The final updated supplemental response to support closure of GL 2004-02 for TMI, Unit 1 will be submitted within nine months following NRC approval of WCAP-17788. provides the revised commitment. The remaining commitments in Reference 1 remain unchanged.
Should you have any questions concerning this submittal, please contact Mike Fitzwater at 717-948-8228.
Respectfully, ct>>CJL~
E.W. Callan, Jr.
Site Vice President, Three Mile Island, Unit 1 Exelon Generation Company, LLC Attachments: 1)
Summary of Regulatory Commitments cc:
USNRC Regional Administrator, Region I USNRC Project Manager, TMl-1 USNRC Senior Resident Inspector TMl-1 Director, Bureau of Radiation Protection - PA Department of Environmental Resources Chairman, Board of County Commissioners of Dauphin County, PA Chairman, Board of Supervisors of Londonderry Township, PA R. R. Janati, Commonwealth of Pennsylvania
U.S. Nuclear Regulatory Commission Supplement to Three Mile Island Nuclear Station, Unit1 (TMI) Letter, TMI-12-148 May 1-5, 2017 Page4 ATTACHMENT 1
SUMMARY
OF REGULATORY COMMITMENTS The following table identifies commitments made in this document. (Any other actions discussed in the submittal represent intended or planned actions. They are described to the NRG for the NRC's information and are not regulatory commitments.)
COMMITMENT TYPE COMMITMENT COMMITTED DATE One-Time Programmatic OR "OUTAGE" Action (Yes/No)
(Yes/No)
Yes No EGG will submit a final updated Within nine months supplemental response to support following NRG approval closure of GL 2004-02 for TMI, Unit 1 of WCAP-17788.