Download DOE Handbook Chemical process hazards analysis PDF

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Is housekeeping acceptable? Yes. Are safe work permits being used? Yes. 6. Checklist Analysis of Cooling Water Chlorination System MATERIAL Do all raw materials continue to conform to original specifications? Yes. The drums are ordered with the same chlorine specification used since startup. Is each receipt of material checked? Yes. The supplier once sent a cylinder of phosgene. Since then, a test is performed by the maintenance staff. In addition, the fusible plugs are inspected for evidence of leakage, before a cylinder is hooked up.

It is reported that some staff do not always check the cylinder's fusible plugs for leaks. Staff should be re-reminded of this procedural item and its importance. Are new operating staff trained properly? Yes. Training includes a review of the PrHA for this process and familiarization with MSDSs. How are communications handled at shift change? There are relatively few open items at the end of a shift. The chlorine cylinders need to be changed only about once every 45 days. If an empty chlorine cylinder needs replaced, it has proven to be easy to schedule the change during a shift.

All of the deviations for a given study node should be analyzed before the team proceeds to the next node. DOCUMENTING THE RES ULTS . The documentation of a HAZOP study is a systematic and consistent tabulation of the effects of process deviations. The study generates narratives about the normal operating conditions and analysis boundary conditions for each equipment item. In addition, it provides a list of potential actions that should be evaluated. 16 is an example of a HAZOP study worksheet.

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