WHAT IS “WHAT IF”?
- What if analysis is a structured brainstorming method of determining what things can go wrong and judging the likelihood and consequences of those situations occurring.
- The answers to these questions form the basis for making judgments regarding the acceptability of those risks and determining a recommended course of action for those risks judged to the unacceptable.
- In simple words, the examination of possible deviation from the design, construction, modification or operating event.
WHY “WHAT IF” IS IMPORTANT?
- It allows us to identify Hazards, Hazardous situations or specific sequences that could produce undesirable consequences.
- It identifies possible abnormal situations, their consequences and existing safeguards.
- It suggests alternatives for risk reduction where obvious improvement opportunities are identified or where safeguards are judged to be inadequate.
WHAT ARE REQUIRED?
- Design documents, operating procedures and maintenance procedures are essential information.
- Photographs and Videotapes of the operation or maintenance procedures.
- Assembling a team with individuals experienced in the design, operation and servicing of similar equipment or facilities.
- The team members should have knowledge of design standards, regulatory codes, past and potential operational errors as well as maintenance difficulties.
- The team is comprised of Operating and Maintenance personnel engineer, Chemist, Structural engineer, Radiation expert and Safety representative.
BENEFITS
- Simple to use and applied to variety of processes.
- No specialized tools or techniques are needed.
- It can be applied at any time of interest.
- Results of the analysis are immediately available.
HOW “WHAT IF” IS DONE?
- Picking the boundaries for the review (single equipment / entire facility).
- Make a clear definition of the boundaries for the analysis.
- Most important step to form an experienced and knowledgeable team.
- Gather the required information from the above sources.
- A facilitator can keep the review moving productively and effectively as well as a scribe is assigned to take notes of the review.
- Develop the “What-If” questions using the documents available and knowledge of review team. Questions can be formulated around human errors, process upsets and equipment failures.
- Determine the answers / results for each question as the situation occurs.
- Assessing the risk judgments and making recommendations for each situation.
- Generate the report that details the scope of the review as well as major findings and recommendations and then submit to the Department or Plant Manager.
LIMITATIONS
- The technique rely heavily on the experience and intuition of review team.
- It can be incomplete and miss some hazard potentials.
- It is more subjective compared to HAZOP.