Risk Support
Integrated SMS
Financial risk analysis
Risk 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.


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.