Event

Basecase

Operator action

Time, s

Time, s

LPSIS failure

0.0

0.0

Beginning uncovery of primary circuit hot legs

0.0

0.0

Loss of subcooling (ΔTSI < 10 K) in the core outlet

390

390

Actuation of LPSIS

No

No

Beginning of coolant leakage through the upper part of MCP depressurized due to coolant overheating and thereby increase its volume

396

396

Beginning core uncovery

723

723

Beginning uncovery of primary circuit cold legs

1142

1142

Operator starts LPP

-

1800

Total uncovery of primary circuit cold legs

3503

N/A

Beginning core outlet temperature increasing

5951

N/A

The fuel cladding temperature beyond 923.15 K

8243

N/A

End of calculation

15,500

6000