ML18334A073

Supplement to License Amendment Request: Proposed Changes to Technical Specification (TS) 3.8.1 Actions A.3 and D.3 to Extend the Offsite Circuit Inoperable Completion Times from 72 Hours to 14 Days

ML18334A073
Person / Time
Site:	Calvert Cliffs
Issue date:	11/30/2018
From:	David Gudger Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML18334A073 (3)

Text

200 Exelon Way Kennett Square. PA 19348 Exelon Generation www.exeloncorp.com 10 CFR 50.90 November 30, 2018 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRG Docket Nos. 50-317 and 50-318

Subject:

Supplement to License Amendment Request - Proposed Changes to Technical Specification (TS) 3.8.1 Actions A.3 and D.3 to Extend the Offsite Circuit Inoperable Completion Times from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days

References:

1) License Amendment Request - Proposed Changes to Technical Specification (TS) 3.8.1 Actions A.3 and D.3 to Extend the Offsite Circuit Inoperable Completion Times from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days, dated August 23, 2018. (ML18235A199)

2) Calvert Cliffs Nuclear Power Plant, Units 1 and 2 - Request for Additional Information Regarding Extending Completion Times to 14 Days (EPID L-2018-LLA-0229), dated October 29, 2018. (ML18302A357)

3) Response to Additional Information Response Proposed Changes to Technical Specification (TS) 3.8.1 Actions A.3 and D.3 to Extend the Offsite Circuit Inoperable Completion Times from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days, dated November 12, 2018. (Ml18316A034)

4) Calvert Cliffs Nuclear Power Plant, Units 1 and 2 - Issuance of Amendment Nos. 326 and 304 to Add Risk-Informed Completion Time Program (EPID L-2016-LLA-0001 ), dated October 30, 2018. (Ml 18270A130)

By letter dated August 23, 2018 (Reference 1), Exelon Generation Company, LLC (Exelon) submitted changes to the Technical Specifications (TS), Appendix A of Operating License Nos. DPR-53 and DPR-69 for Calvert Cliffs Nuclear Power Plant (CCNPP), Units 1 and 2, respectively.

Specifically, Exelon requested two one-time use extensions to TS 3.8.1 (AC Sources-Operating) Actions A.3 and 0.3 Completion Times (CTs) for an inoperable offsite circuit from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to fourteen (14) days in order to allow for the future installation and tie in of a new 13 kV service transformer during the 2019 Unit 2 Refuel Outage and the 2020 Unit 1 Refuel Outage.

U.S. Nuclear Regulatory Commission Supplement-Withdraw of proposed TS 3.8.1 Actions A.3 Docket Nos. 50-317 and 50-318 November 30, 2018 Page2 The NRC staff reviewed the information provided and identified the need for additional information to complete their evaluation of the amendment request. The final request for additional information (RAI) was sent from the NRC to Exelon by electronic mail message on October 29, 2018 (Reference 2). By letter dated November 12, 2018 (Reference 3) Exelon responded to NRC RAI to facilitate the NRC technical review.

Since the issuance of TS Amendment Nos. 326 and 304 to add a Risk-Informed Completion Time Program (Reference 4) the TS 3.8.1.A.3 Action is now a risk informed completion time. An adequate risk evaluation can be performed under an Exelon controlled program to extend the CT for an inoperable offsite circuit to support the Electrical Distribution Reliability Improvement Project (EDRIP). Therefore, the proposed change to TS 3.8.1.A.3 CT is no longer required.

Via this letter Exelon withdraws the proposed change to TS 3.8.1 (AC Sources-Operating) Action. A.3 CT for an inoperable offsite circuit from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to fourteen (14) days. The proposed change to TS 3.8.1 (AC Sources-Operating) Action D.3 remains valid and in effect.

In addition, a minor correction should be noted that the Attachments 3 and 4 banner pages in Reference 3 should reflect Calvert Cliffs Nuclear Power Plant.

Exelon has reviewed the information supporting a finding of No Significant Hazards Consideration provided to the NRC in Reference 1 and determined that the information provided in this supplement letter does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration.

Furthermore, the information provided in this supplement letter 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.

No regulatory commitments are contained in this letter.

If you have any questions or require additional information, please contact Frank Mascitelli at 610-765-5512.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 301h day of November 2018.

R~ully, . - / '

6 f.A-A-, *J l ~rv---

David T. Gudger Manager, Licensing and Regulatory Affairs Exelon Generation Company, LLC

U.S. Nuclear Regulatory Commission Supplement-Withdraw of proposed TS 3.8.1 Actions A.3 Docket Nos. 50-317 and 50-318 November 30, 2018 Page3 cc: USNRC Region I, Regional Administrator USNRC Project Manager, CCNPP USNRC Senior Resident Inspector, CCNPP D. A. Tancabel, State of Maryland