Startup After Emergency Shutdown

Also not required by regulation for OSHA PSM and EPA RMP covered facilities (unless there were changes made prior to the restart), some companies are finding that PSSR for this critical operating phase has benefits to process safety performance, ft is a self-defined trigger event in these cases. 

Although an operating procedure should exist for this type of startup at all covered facilities, some processes are again found to be more complex than others. 

GUIDELINES FOR PERFORMING EFFECTIVE PRE-STARTUP SAFETY REVIEWS 

There are certain processes that, due to their nature or automation, can be immediately restarted with minimal concern for upset. There are other chemical processes for which an emergency shutdown requires hours or days of preparations before they can be restarted. Here are some things to consider  

2-1 Occupational Safety and Health Administration. Process Safety Management of Highly Hazardous Chemicals, 29 CFR Part 1910, Section 119. Washington, DC. 1992. 

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Startup This includes procedures addressing pre-startup operations, initial startup, startup following turnaround and startup after emergency shutdown. 

Rather than do a formal PSSR, would it be wise to ensure final check steps for redundant verification of critical startup activities are built into the last section of the startup after emergency shutdown operating procedure ... 

Startup following a process modification or after an emergency shutdown... 

How will this redesign affect startup after an emergency shutdown of process units ... 

For non-change type trigger events, PSSR is verifying that the process is safe for startup, all maintenance has be completed, and other facility requirements have been met (for example, a PSSR following a maintenance turnaround or after an emergency shutdown). Again, the PSSR provides a second layer of protection that all other policies and procedures are complete. 

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