[ RadSafe ] BWR SCRAM sequence

James Barnes james.g.barnes at att.net
Thu Mar 17 08:29:37 CDT 2011

Dear all;

Being primarily a PWR HP, I was hoping some of you BWR types might help me with 

During a normal SCRAM on a BWR, am I correct in assuming that the steam 
generated by the reactor is shunted directly to the turbine condenser so it can 
be used as a heat sink?

Can somebody walk me thorugh the sequence of SCRAM to cold shutdown as to how 
the various systems are activated and approximately what conditions trigger 
those systems?

This is during a "routine" SCRAM (sudden rod insertion) resulting in the system 
being taken to cold shutdown.  Not a LOCA or some other type of outlier event.


James Barnes

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