Process hazard analysis methods

Question 1

What does a HAZID focus on (Causes or Consequences) and what type of events (Common/Rare)?

Answer 1

1) Consequences
2) Rare

Question 2

What does a HAZOP focus on (Causes or Consequences) and what type of events (Common/Rare)?

Answer 2

1) Causes
2) Common

Question 3

What does a LOPA focus on and what type of events (Common/Rare)?

Answer 3

1) Barriers
2) Rare

Question 4

What does a Fault tree focus on and what type of events (Common/Rare)?

Answer 4

1) Barriers / Causes / Consequences
2) Common and Rare

Question 5

What does a Hazardous area classification focus on and what type of events (Common/Rare)?

Answer 5

1) Cause formation of explosive atmospheres + Prevention - ignition prevention
2) Common and rare