ML25349A101
| ML25349A101 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 06/30/2025 |
| From: | NRC/RGN-III/DORS/OB |
| To: | Xcel Energy |
| Gregory Roach | |
| Shared Package | |
| ML23202A208 | List: |
| References | |
| Download: ML25349A101 (0) | |
Text
Form 3.4-1 Events and Evolutions Checklist Rev. 3 Facility: PRAIRIE ISLAND Date of Exam: NOVEMBER 2025 Operating Test No.: PI-ILT-NRC-2501S, 2504S, 2505S, 2506S A
P P
L I
C A
N T
E V
E N
T T
Y P
E Scenarios - RO 2506 2505 2501 2504 T
O T
A L
M I
N I
M U
M POSITION POSITION POSITION POSITION A
T C
B O
P A
T C
B O
P A
T C
B O
P A
T C
B O
P RO RO 1 Johnston RX 1
4 1
1 NOR 2
1 1
1 I/C 2, 5 3, 4, 9 2, 8 2, 4, 6, 7 5
4 MAJ 7
5 5
5 2
2 MAN. CTRL 5
9 2
6, 7 2
1 TS 0
RO 2 Alpers RX 1
4 1
1 NOR 2
1 1
2 1
I/C 2, 5 3, 4, 9 3,
4, 7 2, 8 2, 4, 6, 7 7
4 MAJ 7
5 5
5 5
3 2
MAN. CTRL 5
9 1, 4, 7 2
6, 7 5
1 TS 0
RO 3 Boyd RX 1
4 1
1 NOR 1
1 1
1 I/C 4, 5, 6 6, 7, 8 2, 8 2, 4, 6, 7 6
4 MAJ 7
5 5
5 2
2 MAN. CTRL 6
6, 7 2
6, 7 3
1 TS 0
RO 4 Kosen RX 3
4 1
1 NOR 1
1 1
1 I/C 4, 5, 6 4, 6 2, 8 2, 4, 6, 7 5
4 MAJ 7
5 5
5 2
2 MAN. CTRL 6
4, 6 2
6, 7 3
1 TS 0
Form 3.4-1 Events and Evolutions Checklist Rev. 3 Facility: PRAIRIE ISLAND Date of Exam: NOVEMBER 2025 Operating Test No.: PI-ILT-NRC-2501S, 2504S, 2505S, 2506S A
P P
L I
C A
N T
E V
E N
T T
Y P
E Scenarios - SRO-I 2506 2505 2501 2504 T
O T
A L
M I
N I
M U
M POSITION POSITION POSITION POSITION SS ATC BOP SS ATC BOP SS ATC BOP SS ATC BOP SRO-I SRO-I 1
Dwyer RX 4
0*
1 NOR 1
2 1
1 2
1 I/C 4, 5, 6 3,4,6,7,8, 9
2,4,6,7,8 2, 8 2, 4, 6, 7 9
4 MAJ 7
5 5
5 5
2 2
MAN. CTRL 6
2 6, 7 1
1 TS 3, 4 2, 3 2
2 SRO-I 2
Samuelson RX 1
4 1
1 NOR 1
1 1
1 1
I/C 2, 4, 5, 6 6, 7, 8 2,4,6,7,8 2, 8 2, 4, 6, 7 7
4 MAJ 7
5 5
5 5
2 2
MAN. CTRL 6, 7 2
6, 7 2
1 TS 2, 3 2, 3 2
2 SRO-I 3
Bafaro RX 4
0*
1 NOR 1
2 1
1 2
1 I/C 4, 5, 6 3,4,6,7,8, 9
2,4,6,7,8 2, 8 2, 4, 6, 7 9
4 MAJ 7
5 5
5 5
2 2
MAN. CTRL 6
2 6, 7 1
1 TS 3, 4 2, 3 2
2 SRO-I 4
Cato RX 1
4 1
1 NOR 2
1 1
1 1
I/C 2, 5 3,4,6,7,8, 9
2,4,6,7,8 2, 8 2, 4, 6, 7 8
4 MAJ 7
5 5
5 5
2 2
MAN. CTRL 5
2 6, 7 1
1 TS 3, 4 2, 3 2
2 SRO-I 5
Drogemuller RX 1
4 1
1 NOR 1
1 1
1 1
I/C 2, 5 3, 4, 6, 7 2,4,6,7,8 2, 8 2, 4, 6, 7 6
4 MAJ 7
5 5
5 5
2 2
MAN. CTRL 5
2 6, 7 1
1 TS 2, 3 2, 3 2
2 SRO-I 6
Maunu RX 1
4 1
1 NOR 1
1 1
1 2
1 I/C 2, 4, 5, 6 6, 7 7
2,4,6,7,8 2, 8 2, 4, 6, 7 7
4 MAJ 7
5 5
5 5
5 3
2 MAN. CTRL 6, 7 1, 7 2
6, 7 4
1 TS 2, 3 2, 3 2
2
Facility: PRAIRIE ISLAND Date of Exam: NOVEMBER 2025 Operating Test No.: PI-ILT-NRC-2501S, 2504S, 2505S, 2506S A
P P
L I
C A
N T
E V
E N
T T
Y P
E Scenarios - SRO-I 2506 2505 2501 2504 T
O T
A L
M I
N I
M U
M POSITION POSITION POSITION POSITION SS ATC BOP SS ATC BOP SS ATC BOP SS ATC BOP SRO-I SRO-I 7
Thomas RX 4
0*
1 NOR 2
1 1
1 2
1 I/C 3, 4, 8, 9 3, 4, 6, 7 2,4,6,7,8 2, 8 2, 4, 6, 7 8
4 MAJ 5
5 5
5 5
2 2
MAN. CTRL 9
2 6, 7 1
1 TS 2, 3 2, 3 2
2
- Per ES-3.4, C.2.(9): Replaced reactivity manipulation with additional I/C failures.
Form 3.4-1 Events and Evolutions Checklist Rev. 3
Facility: PRAIRIE ISLAND Date of Exam: NOVEMBER 2025 Operating Test No.: PI-ILT-NRC-2501S, 2504S, 2505S, 2506S A
P P
L I
C A
N T
E V
E N
T T
Y P
E Scenarios - SRO-U 2506 2505 2501 2504 T
O T
A L
M I
N I
M U
M POSITION POSITION POSITION POSITION SS ATC BOP SS ATC BOP SS ATC BOP SS ATC BOP SRO-U SRO-U 1
Bergeson RX 1
4 1
0 NOR 1
1 1
1 1
I/C 2, 4, 5, 6 6, 7, 8 2, 4, 6, 7 2, 8 2, 4, 6, 7 7
2 MAJ 7
5 5
5 5
2 1
MAN. CTRL 6, 7 2
6, 7 2
0 TS 2, 3 2, 3 2
2 SRO-U 2
Linden RX 4
0 0
NOR 1
2 1
1 2
1 I/C 2, 4, 5, 6 3, 4, 9 2, 4, 6, 7 2, 8 2, 4, 6, 7 7
2 MAJ 7
5 5
5 5
2 1
MAN. CTRL 9
2 6, 7 1
0 TS 2, 3 2, 3 2
2 SRO-U 3
Angerman RX 3
4 1
0 NOR 2
1 1
1 1
I/C 3,4,6,7,8, 9
6 2, 4, 6, 7 2, 8 2, 4, 6, 7 7
2 MAJ 5
5 5
5 5
2 1
MAN. CTRL 6
2 6, 7 1
0 TS 3, 4 2, 3 2
2 Form 3.4-1 Events and Evolutions Checklist Rev. 3