She determines that the following skilled people are needed for the HAZOP Analysis to succeed: Leader A person experienced in leading a HAZOP Analysis.

ABC plans to run the pilot plant for only a few days at a time.

The VCM and by-products will be immediately destroyed in an incinerator.

ABC will build the pilot plant in Anywhere, U.S.A.

This site was chosen because the world-scale VCM production plant will be built there and ABC wants to begin acclimating the community and the plant staff to this new project.

Thus, the pilot plant will provide some training for potential operators of the world-scale VCM plant.

ABC Chemicals and the VCM business team have required that a hazard evaluation of the pilot plant be performed before start-up.

Past HE studies have yielded very useful information for assuringimproving the safety of the VCM process.

The business team believes another such evaluation will be just as fruitful.

Also, the business team wants to be sure that all prudent measures are taken to minimize the likelihood of an accident.

Available Resources Over the past year, ABC has gained a lot of knowledge and laboratory experience with VCM.

USA DRAWN 8Y DFM CHECKED BY WFE DATE 6186 DATE 7786 REV DATE DESCRIPTION Figure 14.1 VCM pilot plant PID.

VCM process. The following information is available for the pilot plant hazard evaluation: Pilot plant PFDs Pilot plant PIDs Laboratory development reports and experience Plot plan and equipment layout drawings Previous What-If Analysis and PHA reports (and information used in these studies MSDSs, lab reports, literature on VCM, etc.) Some operating procedures (start-up procedures for the furnace and incinerator) Major component design specifications All of this information will be useful for the HE study.

Selection of Hazard Evaluation Technique Mr.

Chemist of the business team is assigned responsibility for seeing that an HE study of the pilot plant is completed.

He asks of ABCs process hazards analysis group to lead this effort, and then asks her to select an appropriate HE method.

The pilot plant is a well-defined system with sufficient detail available to allow the option of using any of several HE methods.

The entire pilot plant is to be examined to identify process safety hazards.

For this reason, eliminates Fault Itee Analysis, Event Dree Analysis, Cause-Consequence Analysis, and Human Reliability Analysis from further consideration.

While these methods could be used in this situation, has found them more effective in examining one specific type of accident situation.

The Relative Ranking method is not selected because the pilot plant is small and all the major equipment will be examined.

The PHA method is not chosen because it was used in the last review.

The Checklist Analysis method is not selected because ABC does not have a comprehensive checklist for such a plant or materials.

Thus, narrows her choice to the What-If Analysis, FMEA, and HAZOP Analysis techniques.

Any of these HE methods may be adequate for this particular study.

Study Preparation As a first step, selects a team of people to participate in the HAZOP Analysis.

Hazop Meeting Rules