classification of fire

 https://youtu.be/JSFqwVZMFH0

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Fire

A fire is a exothermic chemical process in which fuel gets ignited in presence of oxygen and gave out heat and light. A fire is an exothermic reaction because it gives out heat and light in the surrounding. It occurs in 4 stages that are Incipient, Smouldering, Growth and at last it gets decay. In first stage that is incipient in this stage when heat, oxygen and fuel combines and evolve in chemical reaction in this stage a person can't able to see the heat and smoke then after incipient stage. Smouldering Stage occurs in this stage a person or a fire fighter can only see the smoke as the fuel burn slowly and only smoke can be visible and no flame will be seen. Smoke generated from fire has many toxic gases such as carbon monoxide, aldehydes, acid gases, sulfur dioxide, nitrogen oxides and many more, Due to release of these toxic gases from smoke generated by fire people loss their life more in comparison to fire. Due to generation of carbon monoxide from smoke it get dissolved in
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History and types of sprinkler

In 1812 the first sprinkler system was installed in United kingdom at Theater royal, Drury lane. At that time these systems were Designed in such that the cylindrical airtight reservoir contains 95,000 litres which was fed by 250mm water main which supplies water to all parts of theater. Types of Sprinkler   1. Perforated type sprinkler system-  This type of system were used in textile mills in new England as a fire protection but the difficulty was that they were not automatic these sprinkler system were used in 1852 to 1885.After that  Philip W. Pratt of Abington, Massachusetts  started experimenting for automatic sprinkler in around 1860 after that in 1872 he patented this system. 2. Automatic sprinkler System- Henry S. Parmalee of New Haven, Connecticut, is considered the inventor of the first practical automatic sprinkler head .After that parmalee improved the system which was patented by Philip W.  Pratt. In 1874 the piano factory which was owned by Henry S. Parmalee installed it
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Summary of IS 942 Portable fire pump set

 This pump set shall be of 275 litre/ min and have a pressure of 4 kgf/cm square. and fitted on a steel frame with anti-vibration coil.  Design The design of the engine used in pump should be of single cylinder two stroke or four stroke. The engine can either be driven of diesel or petrol. and should be air cooled. Pump The pump that will be installed should be single stage centrifugal pump and the casing of the pump shall be designed in such a way that there is easy excess to impeller and can easily inspect and erect the pump. the pump shall be fitted with mechanical gland of  self adjusting type.  test of pump performance is done at 27 degree Celsius at 760 mm of mercury. The pump shall be tested with suction strainer fitted continuously for 4 hours shall be with a lift of 3 m for the following duties: output Pressure I/min          kgf/cm 2 545                  2.5 365                  3.5 275                  4.0 The primer of the pump shall lift the water from at least 7 m of heig
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