ML22048B181

Pre-Application Meeting for Prairie Island TS 5.6.6, PTLR, LAR

ML22048B181
Person / Time
Site:	Prairie Island
Issue date:	02/18/2022
From:	Northern States Power Co, Xcel Energy
To:	Robert Kuntz NRC/NRR/DORL/LPL3
Kuntz R
References
EPID L-2022-LRM-0011
Download: ML22048B181 (9)

Text

PRE-APPLICATION MEETING FOR PRAIRIE ISLAND TS 5.6.6, PTLR, LAR February 18, 2022

© 2022 Xcel Energy 1

Agenda Purpose

Background

LAR Details Schedule

© 2022 Xcel Energy 2

Purpose Discuss proposed license amendments to adopt approved methods in Technical Specifications (TS) 5.6.6, Reactor Coolant System (RCS) Pressure and Temperature Limits Report (PTLR).

© 2022 Xcel Energy 3

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Background===

• NSPM pulled surveillance capsules from the reactor vessel in the most recent Unit 1 (2020) and Unit 2 (2021) refueling outages.

• Review of Westinghouse draft report for the analysis of the Unit 1 surveillance capsule identified that there was a legacy error in calculations with respect to the location of weld W2.

© 2022 Xcel Energy 4

LAR Details

• The proposed amendments would revise PINGP TS 5.6.6 to include more recent analytical methods that have been found acceptable by the NRC.

o Update the approved analytical method to determine RCS pressure and temperature limits and over-pressure protection system (OPPS) setpoints from WCAP-14040-NP-A, Rev 2, to that in WCAP-14040-NP-A, Rev 4.

o Update the approved analytical method for calculating neutron fluence to the Westinghouse methodology provided in WCAP-18124-NP-A, Rev 0, to allow this method as an alternative to section 2.2 of WCAP-14040, Rev 4.

• NSPM plans to include with the LAR the revised Unit 1 heatup and cooldown curves using the proposed methods.

o NSPM expects the Unit 2 heatup and cooldown curves will be bounded by the Unit 1 curves.

© 2022 Xcel Energy 5

LAR Details (continued)

Technical Specification Markups

© 2022 Xcel Energy 6

LAR Details (continued)

• Precedent: Beaver Valley Units 1 and 2 amendments 313 and 203 o Comments on extended beltline comparing PINGP to Beaver Valley.

Supplement 1 to WCAP-18124, Rev 0, addresses extended beltline generically and is currently in NRC review and expected before the new Unit 1 heatup and cooldown curves are completed.

The Beaver Valley fluence calculation resulted in more material in the extended beltline. PINGP will not have new material within the extended beltline.

© 2022 Xcel Energy 7

Schedule

• March 2022 - Submit Unit 1 Capsule Report

• August 2022 - Submit PTLR LAR

• March 2023 - Submit Unit 2 Capsule Report

• July 2023 - Submit Unit 2 heatup and cooldown curves

• September 2023 - Submit PTLR revision

© 2022 Xcel Energy 8

© 2022 Xcel Energy 9