ML20114E014

(TMl-2) - Biennial 10 CFR 50.59 and Pdms SAR Report

ML20114E014
Person / Time
Site:	Three Mile Island
Issue date:	04/23/2020
From:	Halnon G GPU Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TMl-20-014
Download: ML20114E014 (2)

Text

~u GPU Nuclear Inc.

Three Mile Island Nuclear Station Route 441 South NUCLEAR Post Office Box 480 Middletown, PA 17057-0480 Tel 717-948-8641 April 23, 2020 TMl-20-014 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 THREE MILE ISLAND NUCLEAR STATION, UNIT 2 (TMl-2)

POSSESSION ONLY LICENSE NO. DPR-73 DOCKET NO. 50-320

SUBJECT:

BIENNIAL 10 CFR 50.59 AND PDMS SAR REPORT Attached is the biennial report for Three Mile Island Nuclear Station, Unit 2 (TMl-2) for years 2018 and 2019. This report is being submitted in accordance with TMl-2 Technical Specification 6.8.1.4 and the requirements of 10 CFR 50.59.

Please contact Robert Brady of TMl-1 Regulatory Assurance at (717) 948-8776 if you have any questions regarding this submittal.

Respectfully, Gregory H. Halnon President/CNO GPU Nuclear Attachment cc: USN RC TMl -2 Region I Inspector USN RC TMl-2 Project Manager USN RC Regional Administrator, Region 1

TMI20014 Biennial 10 CFR 50.59 and PDMS SAR Report TMI2 PDMS ACTIVITIES DURING 2018 AND 2019 TMI2 remained in a safe and stable condition during calendar years 2018 and 2019. Activities included rad waste processing, routine surveillances, and equipment repair.

PDMS SAFETY ANALYSIS REPORT CHANGES The PDMS SAR was updated (Update 13) and submitted to the NRC in GPU Nuclear letter, TMI19085, dated August 23, 2019. PDMS SAR Update 13 revised the PDMS SAR to reflect the current plant configuration, administrative processes, and editorial changes.

PROCEDURE CHANGES The typical categories of procedures that were changed in 2018 and 2019 were administrative, ventilation, electrical distribution, rad waste processing, fire protection, and Technical Specification surveillance. All procedure changes at TMI2 are made using the Exelon 10 CFR 50.59 Review Process, which provides a screening process to determine if the change requires a written evaluation. During 2018 and 2019 there were no procedure changes which required a written evaluation.

TESTS AND EXPERIMENTS No tests or experiments not described in the PDMS SAR, where an SSC is utilized or controlled in a manner that is outside the reference bounds of the design for the SSC or is inconsistent with analyses or descriptions in the PDMS SAR were performed at TMI2 during 2018 and 2019.

FACILITY MODIFICATION During 2018 and 2019 there were no facility modifications that impacted the TMI2 PDMS SAR.

Therefore, no 10 CFR 50.59 evaluations were performed related facility modifications. Due to the non operating and defueled status of TMI2 during PDMS, there are no structures, systems, or components that are required to meet the safetyrelated criteria. Therefore, there are no structures, systems, or components classified as safetyrelated at TMI2 during PDMS. All facility modifications are made using the Exelon 10 CFR 50.59 Review Process, which provides a screening process to determine if the change requires a written evaluation. This review and screening process is based on, and incorporates in its entirety, the implementation guidance provided in NEI 9607, Revision 1.