What could have been done for process safety management to prevent the incident in Example.

Example

Stainless Steel (SS) thermowells (a thermowell contains a thermocouple which measures temperature) were installed in a glass-lined distillation column. The process material was a very corrosive lagrimator (tear gas). Hastelloy C was the prior MOC of the thermowells. Within one hour the thermowells failed and caused an environmental incident. Birds fell out of the sky; there were offsite complaints and cars had to be painted that were in the nearby company parking lot.  

Also improper fabrication can cause failures.