ULNRC-06929, Attachment 2: Westinghouse and Framatome ECCS Evaluation Model Margin Assessments
| ML25076A045 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/17/2025 |
| From: | Ameren Missouri, Framatome, Westinghouse |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML25076A042 | List: |
| References | |
| ULNRC-06929 | |
| Download: ML25076A045 (1) | |
Text
Atachment 2 to ULNRC-06929 Page 1 of 3 ATTACHMENT 2 WESTINGHOUSE AND FRAMATOME ECCS EVALUATION MODEL MARGIN ASSESSMENTS
Atachment 2 to ULNRC-06929 Page 2 of 3 WESTINGHOUSE LARGE BREAK LOCA
SUMMARY
A.
ANALYSIS OF RECORD (AOR)
PCT = 1939°F B.
PRIOR ECCS MODEL ASSESSMENTS
+ 58°F C.
CURRENT LOCA MODEL ASSESSMENTS -
+ 3°F March 2025 LICENSING BASIS PCT + MARGIN ALLOCATIONS 2000°F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 61°F SINCE LAST ANALYSIS OF RECORD OR LBLOCA 30-DAY REPORT FRAMATOME REALISTIC LARGE BREAK LOCA
SUMMARY
A.
ANALYSIS OF RECORD (AOR)
PCT = 1561°F B.
PRIOR ECCS MODEL ASSESSMENTS
+ 0°F C.
CURRENT LOCA MODEL ASSESSMENTS -
+ 0°F March 2025 LICENSING BASIS PCT + MARGIN ALLOCATIONS 1561°F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 0°F SINCE LAST ANALYSIS OF RECORD OR RLBLOCA 30-DAY REPORT
Atachment 2 to ULNRC-06929 Page 3 of 3 WESTINGHOUSE SMALL BREAK LOCA
SUMMARY
A.
ANALYSIS OF RECORD (AOR)
PCT = 1043°F B.
PRIOR ECCS MODEL ASSESSMENTS
+ 0°F C.
CURRENT ECCS MODEL ASSESSMENTS -
+ 0ºF March 2025 LICENSING BASIS PCT + MARGIN ALLOCATIONS 1043°F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 0°F SINCE LAST ANALYSIS OF RECORD OR SBLOCA 30-DAY REPORT FRAMATOME SMALL BREAK LOCA
SUMMARY
A.
ANALYSIS OF RECORD (AOR)
PCT = 1618°F B.
PRIOR ECCS MODEL ASSESSMENTS
+ 0°F C.
CURRENT ECCS MODEL ASSESSMENTS -
+ 0ºF March 2025 LICENSING BASIS PCT + MARGIN ALLOCATIONS 1618°F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 0°F SINCE LAST ANALYSIS OF RECORD OR SBLOCA 30-DAY REPORT