It is easy to fixate on production goals and become complacent towards everyday hazards in a process unit. Process Hazard Analyses (PHAs) present a unique opportunity for teams of operators and engineers to sit down, think critically about their process, and identify hazards that may need additional measures to mitigate the operational risks to personnel.…
Some time ago, a client had a heat and material balance that they wanted recreated and scaled, but the only documentation the client had in regards to process chemistry was a set of PFDs with stream tables. Based on the flow rates and compositions on the page (what was appearing and disappearing), I had to…
At every facility, there is a point during the process hazard analysis when the team inevitably dives into “the black hole” of flare/relief/scrubber systems. Following strict HAZOP analysis methodology, a team documents all deviations from normal operating limits. However, with most relief systems, this leaves the team facing numerous causes, and with each source, having…
