- Author
-
Arvidson, J. M.
|
Hord, J.
|
Mann, D. B.
- Title
- Efflux of Gaseous Hydrogen or Methane Fuels from the Interior of an Automobile. Final Report.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBS TN 666,
March 1975,
56 p.
- Distribution
- Available from Government Printing Office
- Keywords
-
automobiles
|
detection
|
dispersions
|
explosions
|
fires
|
hydrogen
|
leakage
|
methane
|
safety
|
vents
|
explosion hazards
- Abstract
- Gasoline-powered automobiles are being converted to operate on gaseous fuels such as H2 or CH4. These fuels are commonly stored in containers located in the trunk of the car. Potential leakage of these gaseous fuels into the passenger compartment of the vehicle constitutes a safety threat. Definitive experiments were performed to identify the explosion hazards, establish venting criteria and obviate general safeguards for H2 or CH4 fueled passenger vehicles. Appropriately designed ventilation systems significantly reduce the safety hazards associated with accumulated combustible gases. Vents are recommended for all autos converted to burn H2 or CH4 and may possibly be eliminated in new cars that are designed for gaseous fuel operation. Combustible gas warning systems are recommended, at least in the interim, for all (converted and new-design) gaseous fueled vehicles. H2 and CH4 gases appear equally safe as vehicular fuels if used in properly designed vehicles.