Fire suppression methods types

Type mission, adjust fire, fire for effect, immediate suppression. Method of target location grid, polar, shift from known point. 

One of the most important parameters that can be nsed to characterise a fire is the rate of heat release. It provides an indication of the size of the fire, the rate of fire growth and consequently the release of smoke and toxic gases, the time available for escape or suppression, the type of snppressive action that are likely to be effective and other attributes that define the fire hazard. Methods based on the oxygen consumption principle are now available to measnre the rate of heat release reliably and accurately. The principle depends upon the fact that the heats of combustion of organic materials per unit of oxygen consumed are approximately the same. This is because the processes in the combustion of all these prodncts involve the breaking of C-C and C-H bonds (which release approximately the same amonnt of energy) with the formation of CO2 and water. 

Before the need of fire protection measures is defined, the type of hydrocarbon fire exposure should be identified. By determining the type of fire expected, the adequacy of the fire protection measures based on the philosophy of protection for the facility, can be assessed. The easiest method to arrive at the protection requirements is to identify the materials and pressures involved in the process. Once this is accomplished, the most appropriate fire control or suppression mechanism can be identified from NFPA 325M. Tables 3 and 4 provides examples of a tabular format that can be used to document the fire control mechanisms that have been chosen. 

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