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 (2009) 245-250.
Trbojevic, V.M., Risk Criteria in EU, ESREL’05, Poland, 27-30 June 2005.