13 Use of probability concept
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Statutory Documents - IMO Publications and Documents - International Codes - HSC 2000 Code - International Code of Safety for High-Speed Craft, 2000 – Resolution MSC.97(73) - Annex 4 - Procedures for failure mode and effects analysis - 13 Use of probability concept

13 Use of probability concept

  13.1 If corrective measures or redundancy as described in preceding paragraphs are not provided for any failure, as an alternative the probability of occurrence of such failure shall meet the following criteria of acceptance:

  • .1 a failure mode which results in a catastrophic effect shall be assessed to be extremely improbable;

  • .2 a failure mode assessed as extremely remote shall not result in worse than hazardous effects; and

  • .3 a failure mode assessed as either frequent or reasonably probable shall not result in worse than minor effects.

  13.2 Numerical values for various levels of probabilities are laid down in section 3 of annex 3 of this Code. In areas where there are no data from craft to determine the level of probabilities of failure other sources can be used such as:

  • .1 workshop test, or

  • .2 history of reliability used in other areas under similar operating conditions, or

  • .3 mathematical model if applicable.

Parent topic: Annex 4 - Procedures for failure mode and effects analysis
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