Page 21 - Penske_Student Guide Book

Module 4: CNG Vehicle Maintenance Safety Practices

Learning Objectives
1. Describe the federal requirements for CNG fuel system inspection.
2. Describe the general safety practices to be used when maintaining or repairing NGVs.
3. Identify the process to be used to detect a leak on a natural gas vehicle.
4. Describe the processes to depressurize portions of the CNG fuel system.
5. Describe Penske’s policy regarding welding or hot work on or around a natural gas vehicle.

Slide Topic Content Notes

CNG High-Pressure Fuel System  CNG high-pressure fuel
Inspection Requirements
system inspections are
required
 Every three years/36,000

miles
 After any fire on the

vehicle
 After any vehicle

accident

 Inspection requirements
currently being reviewed for

modification

General Safety Practices  Never bring a known leaking
vehicle into a maintenance
facility

Signs of a Leak  Hearing a hissing sound
 Smelling the odor of natural

gas
 Observing ice formation

around a leak point

21