ML17072A369

Supplement to License Amendment Request, Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value

ML17072A369
Person / Time
Site:	Peach Bottom
Issue date:	03/13/2017
From:	David Helker Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML17072A369 (2)

Text

Exelon March 13, 2017 U.S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555-0001 200 Exelon Way Kennett Square. PA 19348 www.exeloncorp.com 10 CFR 50.90 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 NRG Docket Nos. 50-277 and 50-278

Subject:

Supplement to License Amendment Request Revise Turbine Condenser

-Low Vacuum Scram Instrumentation Function Allowable Value

References:

1. Letter from Exelon Generation Company (J. Barstow) to the U.S. NRG regarding "Request for License Amendment to Revise Turbine Condenser

-Low Vacuum Scram Instrumentation Function Allowable Value" dated November 4, 2016 (ADAMS Accession No. ML16173A371

). 2. Letter from Exelon Generation (J. Barstow) to the U.S. NRG regarding "Supplement to License Amendment Request -Revise Turbine Condenser

-Low Vacuum Scram Instrumentation Function Allowable Value" dated December 7, 2016 (ADAMS Accession No. ML16342C455).

By letter dated November 4, 2016, as supplemented by letter dated December 7, 2016 (ADAMS Accession Nos. ML16173A371 and ML16342C455, respectively), Exelon Generation Company, LLC (Exelon) submitted a license amendment request for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The amendment would revise the Technical Specification (TS) Allowable Value for the Reactor Protection System Turbine Condenser

-Low Vacuum Scram Function.

As a follow up to the December 7, 2016 supplemental letter, Exelon has confirmed that the proposed values (i.e., allowable value, analytical limit, actual trip setpoint and nominal trip setpoint values) have remained the same based on the revised Loop Uncertainty Calculation for PBAPS. There are no commitments contained within this submittal.

U.S. Nuclear Regulatory Commission License Amendment Request Supplement Revise Turbine Condenser

-Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 March 13, 2017 Page 2 If you have any questions or require additional information, please contact Stephanie J. Hanson at 610-765-5143.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 13 1 h day of March 2017. Respectfully, David P. Helker Manager, Licensing

& Regulatory Affairs Exelon Generation Company, LLC cc: Regional Administrator

-NRC Region I NRC Senior Resident Inspector

-Peach Bottom Atomic Power Station NRC Project Manager, NRA -Peach Bottom Atomic Power Station Director, Bureau of Radiation Protection, Pennsylvania Department of Environmental Protection S. T. Gray, State of Maryland