Clasification Society Rulefinder 2018 - Version 9.30
Clasification Society Provisional Rules - Provisional Rules for Direct Current Distribution Systems, January 2015 - Provisional Rules for Direct Current Distribution Systems - Definitions

Definitions

Reasonably foreseeable abnormal condition is an event, incident or failure that:

  • has happened and could happen again;
  • has not happened but is considered possible. Where the likelihood is considered extremely unlikely or the consequences are trivial, and no further prevention or mitigation action is to be taken, then this is to be justified;
  • is planned for (e.g. emergency actions cover such a situation, maintenance is undertaken to prevent it, etc.).

They should be identified by:

  • using analysis processes that were capable of revealing abnormal conditions;
  • employing a mix of personnel including designers, operators, persons who carry out maintenance and competent safety/risk professionals with relevant domain knowledge and understanding to apply the processes;
  • referencing relevant events and historic data; and
  • documenting the results of the analysis.

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