October 2005

Process Safety

What HAZOP studies cannot do

Safety experts have extensively used this investigative methodology to identify possible hazards with new designs and operating units; however, these studies do have limits

Unni Krishnan, G., Kuwait Oil Co.

Hazard and operability analysis (HAZOP) studies have come a long way from their inception in the 1960s. HAZOP is firmly established in the hydrocarbon processing industry (HPI) and is extensively used to identify hazards and operability problems. It has found its way to other operating areas, especially transportation and software systems, etc. However, many safety experts have always had doubts as to how far HAZOP can go in addressing the numerous hazardous and operability issues that can arise in a complex process system. This article explores HAZOP guidelines and what a well-planned HAZOP should not miss. BACKGROUND HAZOP studies are firmly entrenched in the pro

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