W3F1-2022-0017, Annual Report on Westinghouse Electric Company LLC Combustion Engineering Emergency Core Cooling System Performance Evaluation Models for Calendar Year 2021
| ML22097A340 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 04/07/2022 |
| From: | Lewis J Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| W3F1-2022-0017 | |
| Download: ML22097A340 (3) | |
Text
- ) entergy W3F1-2022-0017 April 7, 2022 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 John Lewis Manager Regulatory Assurance 504-739-6028 10 CFR 50.46
Subject:
Annual Report on Westinghouse Electric Company LLC Combustion Engineering Emergency Core Cooling System Performance Evaluation Models for Calendar Year 2021 Waterford Steam Electric Station, Unit 3 NRC Docket No. 50-382 Renewed Facility Operating License No. NPF-38 This letter provides the Waterford Steam Electric Station Unit 3 (Waterford 3) 10 CFR 50.46(a)(3)(ii) reporting information pertaining to the Westinghouse Electric Company Emergency Core Cooling System (ECCS) performance Evaluation Models (EMs) for calendar year 2021.
There are no new commitments contained in this submittal.
Should you have any questions concerning this issue, please contact John D. Lewis, Manager, Regulatory Assurance, at 504-739-6028.
Enclosure:
Waterford Steam Electric Station Unit 3 10 CFR 50.46 Annual Notification and Reporting for 2021 cc:
NRC Region IV Operator Licensing Assistant (w/ Enclosure)
NRC Senior Resident Inspector - Waterford Steam Electric Station, Unit 3 (w/ Enclosure)
NRR Project Manager (w/ Enclosure)
Entergy Operations, Inc., 17265 River Road, Killona, LA 70057
Enclosure to W3F1-2022-0017 10 CFR 50.46 Annual Notification and Reporting for 2021 (1 page)
Enclosure to W3F1-2022-0017 Page 1 of 1 Waterford Steam Electric Station Unit 3 1 0 CFR 50.46 Annual Notification and Reporting for 2021 There were no changes, error corrections, or enhancements to the 1999 Evaluation Model (EM), which is the EM used in Waterford 3 Large Break Loss-of-Coolant Accident (LBLOCA)
Emergency Core Cooling System (ECCS) performance analysis in calendar year 2021. In addition, there were no changes, error corrections or enhancements to the Supplement 2 Evaluation Model (S2M), which is the EM used in Waterford 3 Small Break Loss-of-Coolant Accident (SBLOCA) ECCS performance analysis in calendar year 2021.
The limiting PCT results for the large and small break LOCAs continue to meet the criteria of 1 O CFR 50.46, paragraph (b) for calendar year 2021.
A summary of the information related to peak clad temperatures (PCT) and adjustment to peak clad temperatures is provided in the following table:
Summary of Information for Waterford 3 1 0 CFR 50.46 Annual Report for 2021 Analysis of Record Adjustment Net PCT (AOR) Peak Cladding as of End-of-Year at the EOY 2021, Temperature (PCT), °F (EOY) 2021, (DF)
(DF)
Evaluation Model (EM)
Used AOR Date Small-Break 1925
-27 1898 Loss-of-Coolant S2M Accident (SBLOCA) 6/19/2009 Large-Break 2092
-8.4 2083.6 Loss-of-Coolant 1999EM Accident (LBLOCA) 7/16/2009