Before revision: Risk assessment techniques include hazard indices, Preliminary Hazard Analysis ( usually accomplished by the use of a risk matrix), Fault Tree Analysis (FTA), Event Tree Analysis (ETA), Layers of Protection Analysis (LOPA, which is often used to determine the Safety Integrity Level [SIL] of safety instrumented functions), Quantified Risk Assessment (QRA), Dynamic Risk Assessment etc.
After revision: PreHA,Risk assessment techniques include hazard indices, Preliminary Hazard Analysis ( usually accomplished by the use of a risk matrix), Fault Tree Analysis (FTA), Event Tree Analysis (ETA), Layers of Protection Analysis (LOPA, which is often used to determine the Safety Integrity Level [SIL] of safety instrumented functions), Quantified Risk Assessment (QRA), Dynamic Risk Assessment etc.