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DEFENCE IN DEPTH
Defence in depth: reactors

INITIATOR CONTINUED...

 

Critical to the rating methodology is identifying the correct initiator.

It is not necessarily the failure that started the event

It is the event, defined in safety analysis

...that challenges safety
systems and for which the safety
systems have been designed.

Examples would be:

  • loss of off-site power
  • reactor trip
  • loss of primary coolant