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Hot work is a process that can be a source of ignition when flammable material is present or can be a fire hazard regardless of the presence of flammable material in the workplace. Common hot work processes involve welding , soldering , cutting , brazing burning and the use of powder-actuated tools or similar fire producing operations outside ...
A spark extinguishing system can detect and eliminate ignition sources before a fire or dust explosion occurs. Systems for grinding, chopping, drying, cooling and pressing materials including their pneumatic or mechanical transport and extraction systems and facilities for separation or storage purposes, also dust collectors, filters, cyclones ...
Because the mixture by definition is ignitable before inerting commence, it is imperative that the inerting procedure does not introduce a potential source of ignition, or an explosion will occur. NFPA 77 states [ 2 ] that carbon dioxide from high-pressure cylinders or fire extinguishers should never be used to inert a container or vessel.
Ignition risks can be minimized by controlling heat sources and using materials that will not ignite or will not support burning in the applicable environment. Some materials are more susceptible to ignition in oxygen-rich environments, and compatibility should be assessed before a component is introduced into an oxygen system. [ 1 ]
A small amount of fuel in the tank leaves pumps on the floor of the tank exposed to the air-fuel mixture, and an electric pump is a potential ignition source. The explosion of a Thai Airways International Boeing 737 in 2001 and a Philippine Airlines 737 in 1990 also occurred in tanks that had a small amount of residual fuel.
As fires can be caused by or involve many ignition sources and fuels, an individual with expertise in fire chemistry should investigate the incident. [5] For example, if there is a gas appliance at the origin of the fire, an investigator should know enough about appliances to either include or exclude it as a possible cause of the fire.
As the building's heat source was natural gas, there was a heater with a pilot light in the basement. As the gas built up, the heater's pilot light became the ignition source of the explosion. A year later the company was fined US$300,000 by the New Jersey Board of Public Utilities after their investigation found multiple safety violations. No ...
An ignitable liquid is a liquid that will readily ignite when exposed to an ignition source, while a fire accelerant is a material that is used to increase the rate of combustion for materials that do not readily burn. [2] Ignitable liquids are not always fire accelerants, they may just be present at the scene under normal circumstances.