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DEFENCE IN DEPTH
Defence in depth

What should affect the rating?

 

We have seen the below diagram before. It is a reminder of the three components of rating an event under defence in depth.

We have dealt with the second aspect and are about to look at the third. There are three separate modules giving the defence in depth approach for the main types of technology.

  • Reactors at power
  • Other facilities
  • Radiation sources and transport

First let's consider the wider aspects of human performance and safety management—common to all three.