02e39f42_stem_Risks_of_Alternative_Fuel__Background
[Hazard --Event] Fire -- from staticignition of fueltanks duringventing [Consequences] Some of these fires have destroyedvehicles. [Knowledge] The properties of static electricity aregenerally well-known, but are not alwaysapplied by operators of alternative fuelfleets. The generation of staticdischarges from jets is discussed in . "Sparks from Steam," A.F. Anderson, Electronics and Power, January 1978. p. 50-53.. [Background] 
At least a dozen such fires have already occurred as CNGtanks were vented to the atmosphere. Static charges aremore likely to build up where droplets or particles arecontained in a high velocity gas stream. When compressednatural gas escapes, droplets may be formed from coolingand subsequent condensation of water or heavyhydrocarbons in the gas, or from entrained compressor oil.
Clean Air Program -- Assesment of the Safety, Health, Environmental and System Risks of Alternative Fuel
Background