DOE-HDBK-1015/2-93FLAMMABLE AND COMBUSTIBLE LIQUIDSHazards of Chemicals and GasesCH-05Rev. 0Page 30FLAMMABLE AND COMBUSTIBLE LIQUIDSOne of the most devastating industrial accidents is an explosion resulting in fire.Carelessness is often the root cause. Improper handling and storage can alsolead to disastrous results. This chapter introduces precautions taken to avoidaccidents with flammable and combustible liquids.EO 1.12DEFINE the following terms:a.Flammable liquidb.Combustible liquidEO 1.13STATE general safety precautions regarding the use,handling, and storage of flammable and combustible liquids.EO 1.14STATE the reasons for and techniques used in bonding andgrounding of flammable liquid containers.EO 1.15LIST four sources of ignition of flammable liquids.EO 1.16STATE the health hazards associated with flammable and/orcombustible liquids.FlammableAndCombustibleLiquidsDefinitionsAs defined by OSHA, DOT, and the National Fire Protection Association Standard, FlammableandCombustibleLiquidsCode,NFPA 30, a flammable liquidis one having a flash point below100 F, and having a vapor pressure not exceeding 40 psia at 100 F. Combustible liquids arethose with flash points at or above 100 F, but below 200 F. Although combustible liquids donot ignite as easily as flammable liquids, they must be handled with caution because of theirability to ignite under certain conditions. Flammable and combustible liquids are furthersubdivided by NFPA 30 into classes as follows.Class I-Those liquids having flash points below 100 F.IA-Those liquids having flash points below 73 F and having a boiling pointbelow 100 F.IB-Those liquids having flash points below 73 F and having a boiling point ator above 100 F.
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