ML22048B181
| 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
=
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
- 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