Issued June 2020
Compressed Natural Gas (CNG) Option
Copyright 2020, Heil Environmental
Printed in U.S.A.
229
CNG FUEL CYLINDER AND SYSTEM
INSPECTION
WARNING
If a CNG-fueled vehicle has been involved in an accident
or fire, the system and cylinders must be inspected by a
certified CNG fuel system inspector.
Inspections must be performed by qualified inspectors
using guidelines from the fuel cylinder manufacturer in
addition to the guidelines listed here.
1. Based on cylinder manufacturer recommendations
and industry standard practices, visual CNG cylinder
inspections should be performed at a frequency of 3
years or 36,000 miles, whichever occurs first.
2. In addition, Heil recommends a daily walk-around or
pre-trip and post-trip visual inspection be performed.
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