Risk Analysis

What-if Analysis

Hazard and Operability (HAZOP) Studies

Failure Mode and Effects Analysis (FMEA)

Preliminary Hazard Analysis (PHA)

Oil & Gas Installations especially refineries

tank farms

cross country pipelines

bottling plants

Event Symbols

Basic event

External event

Undeveloped event

OR gate

AND gate

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Fault tree analysis

Define the undesired event to study

Obtain an understanding of the system

Construct the fault tree

Evaluate the fault tree

Control the hazards identified

Event tree analysis

Define the system

Identify the accident scenarios

Identify the initiating events

Identify intermediate events

Build the event tree diagram

Obtain event failure probabilities

Identify the outcome risk

Evaluate the outcome risk

Recommend corrective action

Document the ETA