Training

The HAZOP study method was developed by ICI in the 1960s and its use and development was encouraged by the Chemical Industries Association (CIA) Guide published in 1977. Since then, it has become the technique of choice for many of those involved in the design of new processes and operations. In addition to its power in identifying SHE hazards, a HAZOP study can also be used to search for potential operating problems. Not surprisingly, the method has been applied in many different ways within the process industries. A HAZOP study is a structured analysis of a system, process or operation, carried out by a multi-disciplinary team. The team proceeds on a line-by-line or stage-by-stage examination of a firm design for the process or operation. Whilst being systematic and rigorous, the analysis also aims to be open and creative. This is done by using a set of guidewords in combination with the system parameters to seek meaningful deviations fiom the design intention. A meaningful deviation is one that is physically possible - for example, no flow, high pressure or reverse reaction. Deviations such as no temperature or reverse viscosity have no sensible, physical meaning and are not considered. The team concentrates on those deviations that could lead to potential hazards to safety, health or the environment