ML19071A062

Withdrawal of License Amendment Request - Technical Specifications Section 3.3.6.2 Functions 3 and 4 Applicability Changes Pertaining to Reactor Building and Refueling Floor Ventilation

ML19071A062
Person / Time
Site:	Peach Bottom
Issue date:	03/11/2019
From:	David Helker Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EPID L-2018-LLA-0264
Download: ML19071A062 (2)

Text

200 Exelon Way Exelon Generation Kennett Square. PA 19348 www exeloncorp com 10 CFR 50.90 March 11, 2019 U.S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, DC 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 N RC Docket Nos. 50-277 and 50-278

Subject:

Withdrawal of License Amendment Request -Technical Specifications Section 3.3.6.2 Functions 3 and 4 Applicability Changes Pertaining to Reactor Building and Refueling Floor Ventilation

References:

1. Letter from David P. Helker (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission - "License Amendment Request-Technical Specifications Section 3.3.6.2 Functions 3 and 4 Applicability Changes Pertaining to Reactor Building and Refueling Floor Ventilation," dated September 27, 2018 (ML18271A009)

2. Electronic mail message from Jennifer Tobin (U.S. Nuclear Regulatory Commission) to David Helker, Exelon Generation Company, LLC- "Peach Bottom Units 2 and 3-Request for Additional Information - Secondary Containment LAR (EPID L-2018-LLA-0264)," dated January 25, 2019 (ML19028A006)

By letter dated September 27, 2018 (Reference 1), Exelon Generation Company, LLC (Exelon) requested amendments to Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (PBAPS}, Units 2 and 3, respectively. The proposed amendments would modify Technical Specifications (TS) requirements related to the applicability for maintaining the Reactor Building Ventilation Exhaust Radiation - High and Refuel Floor Ventilation Exhaust Radiation - High Secondary Containment isolation functions under certain conditions. This change was requested to prevent entry into more limiting TS requirements when one set of the Ventilation Exhaust radiation monitors (either for Reactor Building or Refuel Floor) is inoperable or isolated for maintenance. This change was intended to help alleviate scheduling difficulties associated with Reactor Building and Refuel Floor Ventilation System maintenance activities.

The NRG reviewed the information provided in the Reference 1 submittal and indicated the need for additional information in order to complete its review and evaluation of the amendment request. In an electronic mail message dated January 14, 2019, the NRG issued a draft Request for Additional Information (RAI). This draft RAI was the subject of further discussions during a teleconference on January 24, 2019, between Exelon and NRC

U.S. Nuclear Regulatory Commission Withdrawal of Reactor Building I Refueling Floor Secondary Containment License Amendment Request Docket Nos. 50-277 and 50-278 March 11, 2019 Page2 representatives in which additional clarification was provided. The NRC then formally issued the RAI on January 25, 2019 (Reference 2). Subsequently, it was determined that a response date of March 11, 2019 would be acceptable.

Upon further review, Exelon has determined that this change is no longer needed, as a related change associated with NRC approval of TSTF-542 "Reactor Pressure Vessel Water Inventory Control," which was recently implemented on Peach Bottom Units 2 and 3, provides similar benefits and therefore obviates the need for the subject License Amendment Request (LAR). Therefore, there is no longer a need to respond to the Reference 2 questions. This has been discussed with the NRC Project Manager for Peach Bottom, and agreement reached on closure. Accordingly, Exelon hereby withdraws the subject LAR.

There are no new regulatory commitments in this response.

In accordance with 10 CFR 50.91, "Notice for public comment; State consultation,"

paragraph (b), Exelon is notifying the Commonwealth of Pennsylvania of this response by transmitting a copy of this letter to the designated State Official.

If you have any questions or require additional information, please contact Richard Gropp at 61 0-765-5557.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 11th day of March 2019.

Respectfully, David P. Helker Manager, Licensing and Regulatory Affairs Exelon Generation Company, LLC cc: Regional Administrator - NRC Region I NRC Senior Resident Inspector - Peach Bottom Atomic Power Station NRC Project Manager, NRR - Peach Bottom Atomic Power Station Director, Bureau of Radiation Protection - Pennsylvania Department of Environmental Protection R.R. Janati, Pennsylvania Bureau of Radiation Protection D. Tancabel, State of Maryland