Hazard analysis (HAZAN)
Hazard Analysis (HAZAN) tries to quantify safety problems. Examples of hazard analysis include, fault tree, event tree, rapid ranking, risk estimation, and consequence models. Some sophisticated modelling techniques (e.g. dense gas dispersion) require expertise.
Source: Approved Code of Practice for Managing Hazards to Prevent Major Industrial Accidents, Health and Safety in Employment Act 1992, Department of Labour, New Zealand, July 1994. Regulatory Guidance