GUJARAT STATE CHEMICAL DISASTER MANAGEMENT PLAN

DEFINITIONS AND GLOSSARY OF KEY TERMSDanger: A popular expression covering the subjective perception of hazard or risk.Dose: Quantity of an agent absorbed over a specified period of time.Effect: Immediately or delayed result of an exposure.Event: The realization of a hazard.Exposure: State of a specific target being open and vulnerable to the consequence of an event.Frequency: An expression of how often a considered occurrence takes place in a given time.Hazard: An inherent property of a substance, agent, and source of energy or situation having the potential of causingundesirable consequences and/or effects.Hazard study: (equivalent terms: hazard survey, hazard analysis, etc.) Identification of individual hazards of a system,determination of the mechanisms by which they could give rise to undesired events, and evaluation of the consequencesof these events.Individual risk: Risk to which an individual person within a specific population is subjected.Major hazard: A hazard having the potential of causing a major accident; i.e. a major emission, a fire or an explosionwhich leads to considerable social disruption as the result of serious adverse effects on the following targets:• Death, severe intoxication or injuries requiring extended hospitalization of number of people and/or• Significant damage to property, animals, crops or plants, or significant contamination of water, soil or air,with considerable economic impact.Probability: An expression of the chance that a considered occurrence will take place.Reliability: An expression of the ability of• Numerical data or assumptions to be a true representation of the required parameter• Methods and procedures to be able to give, for the circumstances of the case, the result that is requiredof them• Equipment and people to perform the function that is required of them.Residual risk is the risk still remaining after the implementation of risk management.Risk is the combination of a stated effect and its probability of occurring.Risk assessment: The procedure to identify risk by combining the results of a hazard study with the probabilities of theevents considered and their effects.Risk management: The whole of actions taken to achieve and maintain the safety of an installation andits operation.Safety: A situation without risks.Societal risk: Risk to which a defined group or number of persons within a specific population is subjected simultaneously.Uncertainty: An expression of the doubt about numerical data, an assumption, model used or the result of a method.xivGUJARAT STATE INDUSTRIAL CHEMICAL DISASTER MANAGEMENT PLAN