Lecture 3 - HAZID

Question 1

Hazard Identification vs HAZID

Answer 1

Routine Hazard identification
* An every-day routine process you do mindfully at work and outside of work
* Examples include Take 5’s, Job Hazard analysis ….
* This is not part of Engineering Risk assessment and not discussed further this week

vs

HAZID
* A structured process undertaken at the early stages of engineering design of complex systems as part of a preliminary risk assessment.
* This is one of the Engineering Risk Assessment processes we mentioned in the first PW session this week.

Question 2

What is the HAZID process?

Answer 2

REFER TO SLIDES4

Question 3

How can hazards be identified?

Answer 3

• After agreeing on the Scope the next step is to decompose into dimensions.
• HAZID Dimensions include are there hazards in
• specific phases of the work,
• associated with specific activities,
• arising from specific event scenarios,
• to do with specific areas where work is planned,
• specific systems, and
• processes and management systems. (See examples on next slide)
• Within each dimension we need to identify abnormal events or conditions that could, if not correctly and promptly responded to, result in hazard exposure.
• Then we identify the sources of hazard and barriers around these hazards. Guide words can be used to ensure common sources and events are identified.
• We also identify events that can lead to direct threat to the integrity of the barriers.