Hazard, Hazid, Hazan and Hazop – part of Safety and Risk Management...

Hazard, Hazid, Hazan and Hazop – part of Safety and Risk Management Hazard, Hazid (hazard identification), Hazan (hazard analysis), and Hazop (hazard and operability studies) are important safety and risk management techniques in the steel industry (Fig 1).  Fig 1 Safety and risk management techniques Hazards Hazard is defined as ‘a condition, an event, or a circumstance that can lead to or contribute to an unplanned or undesirable event’. Hazard is a potential cause to generate a disaster. It has got the potential to cause (i) serious harm to the individual or the environment, (ii) harm, the severity of which depends on the extent and frequency of exposure to the hazard, and (iii) harm that does not usually occur, or is not usually detectable until a significant time (years) after exposure to the known hazard. Any activity, procedure, plant, process, substance, situation or other circumstance that has the potential to cause harm constitutes a hazard. Hazards are logically classified in the same way as the disaster events are classified.  Since a hazard exists because it may result into a disaster, it is usually viewed as natural based, human systems based, or conflict based.  Not every hazard results into a disaster, but every disaster is the result of a hazardous condition, whether or not that condition was recognized in advance of the event. Hazards are normally not identical, not uniform, not exclusive, and not transposable. They are not uniform in their range of occurrence, impacts, or timelines. They have got non identical pattern of development. Hence each hazard is to be understood in the context of its time and place. One hazard generally does not substitute for another, at least at the higher level of classification.  Since hazards are not the same, each hazard is to...