Inspection of Compressed Natural Gas Cylinders on School Buses

NREL, Paul Norton (NREL Technical Monitor)

Research output: NRELSubcontract Report


The U.S. Department of Energy (DOE) is sponsoring compressed natural gas-powered school bus vehicle demonstrations in various locations around the country. Early in 1994, two non-DOE-sponsored compressed natural gas vehicles equipped with composite-reinforced-aluminum fuel cylinders experienced cylinder ruptures during refueling. Subsequent inspections revealed that the cylinder compositematerials were damaged, which led to the ruptures. Ensuring the safety of the compressed natural gas vehicles it sponsors is of paramount importance to DOE, so the department directed the National Renewable Energy Laboratory to conduct inspections of DOE-sponsored vehicles nationwide. Following the inspections, the inspectors made the recommendations described in this report, which are currentlybeing implemented.
Original languageAmerican English
Number of pages41
StatePublished - 1995

Bibliographical note

Work performed by Acurex Environmental Corporation, Mountain View, California

NREL Publication Number

  • NREL/TP-425-7629


  • alternative fuels
  • compressed natural gas safety
  • vehicle safety


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