Mistakes to avoid
Risk management measures – Performance criteria
Practical sheet REF: FIC0544 V1
Mistakes to avoid
Risk management measures – Performance criteria

Author : Olivier IDDIR

Publication date: September 10, 2012, Review date: November 27, 2016 | Lire en français

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6. Mistakes to avoid

6.1 Don't confuse efficiency with probability of failure

If an MMR is not effective against a scenario, it cannot be valued as an MMR. Taking it into account in the ESD by associating a probability of failure is not correct and leads to an under-assessment of the risk. The probability of failure of an MMR can only be taken into account after verification of its effectiveness in relation to the scenario studied.

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6.2 Don't confuse the duration of the leak with the response time of an MMR designed to isolate a leak.

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