02e39f42_stem_Risks_of_Alternative_Fuel__Background
[Hazard --Event] 2-17 Fire -- fromdamaged gassupplypipelines [Consequences] The high line pressure meansthat large amounts of fuel canbe released quickly. [Knowledge] Since such high gas pressuresare not often used in urbanareas and seldom used onprivate property, there is littleexperience with damagepotential. Contractors andothers may not be prepared forthe possibility of such releaseswithin an urban area. [Background] 
Because of the economics of CNGcompression, there is an incentive to usepipeline supply pressures to the compressorthat are much higher than those normally usedfor natural gas distribution. Some transitoperations with CNG fleets have natural gassupplies of 200-400 psig or more on theproperty. Any construction work on thepremises can endanger that piping. Construction crews working on the premisesmay not expect this level of danger.
Clean Air Program -- Assesment of the Safety, Health, Environmental and System Risks of Alternative Fuel
Background