Operation analysis 4 Economics 3 Economic theory 2 Barrier analysis 1 Bent Pin Analysis 1 Cause Consequence analysis 1 Common cause failure analysis 1 Event tree analysis 1 Fault Hazard analysis 1 Fault tree analysis 1 Functional Hazard analysis 1 Hazard Analysis 1 Health hazard assessment 1 Markov Analysis 1 Mishap, Hazards 1 Operability analysis, Hazard 1 Operations analysis 1 PNA ( Petri Net Analysis) 1 Petri Net Analysis 1 Safety requirements 1 Social Sciences- Economic Theory-Economic Man-Economic - Analysis 1 Software Safety assessment 1 System safety 1 project management 1