Research and Production Reactor PSAs

In the U.S., the Department of Energy operates or has operated reactors that are used for nuclear physics, materials studies, and i.sotope production. Their safety has been assessed by PSA. 

The loss of all AC power initiator includes both commercial (offsite) power and all three diesels, including the normally-running diesel. Local fault events include localized flow blockages in iho core and localized fuel faults. A lobe power imbalance initiator occurs if the individually-controlled core section powers (lobe powers) 

Large reactivity insertion (experimental loop rupture) SL.4 j 

Sequence Evaluation Program Nominal HRA technique (NUREG/CR-4772) with discussions with 0 without detailed walk-throughs and talk-throughs. Using an interim accident sequence 

Jnavailabilities ranged from 1.8E-5 for the scram system to 0.1 for several systems iring 

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