RELEVANT AP-600 PHENOMENA

AP-600 Plant

Nodalization of AP-600 plant for the integrated FUMO code

 

Long term pressure level direct function of external spray heat transfer

Intrinsic limit in pressure reduction linked to active systems absence
high temperature leading to high pressure is the only driving force
long term pressure trend is almost flat & can only decrease as decay heat
Purpose of performed analyses:

To assess the long term behaviour in order to check if PCCS,
together with containment heat sinks,
is able to guarantee desired safety margins


RPV Pressure


RPV Pressure (long term)


Power removed


Power removed (long term)


Containment Pressure


Containment Pressure (long term)

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