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Risk criteria

RISK ACCEPTANCE CRITERIA

 

Criteria for offshore spills – Our approach for oil spill risk criteria identified three tiers of risk levels: (a) acute spills - intolerable, and driven by ALARP to negligible level through hardware changes; (b) substantial spills - also intolerable, but As Soon As Reasonably Practicable principle applies through emergency response actions, and (c) negligible spills - no response events.

 

 

 

 

 

 

Applying ALARP in conditions of uncertainty – the uncertainty of a risk estimate is treated in an explicit manner, by recognising that the reduction of uncertainty does not of itself bring about risk reduction, but simply leads to a better directed approach to precautions. It is these that reduce the risk. The process leading to tolerable level of risk starts with a reduction of uncertainty based on relevance and quality of evidence, and linking these to specific precautions. This is followed by further evaluating risk reducing measures against the remaining precautions.

Papers:

Trbojevic, V.M. Another look at risk and structural reliability criteria, Structural Safety 31 (2009) 245-250.

Trbojevic, V.M., Risk Criteria in EU, ESREL’05, Poland, 27-30 June 2005.

Rimington, J.D., Trbojevic, V.M., Determination of ALARP in conditions of uncertainty, Foresight and Precaution - ESREL 2000 and SRA Conference, Edinburgh, 2000.