Page 24 - WM E-Learning Handbook

Module 4: NGV Maintenance Safety Practices

Learning Objectives
1. Describe the federal requirements for CNG fuel system inspection and Waste Management’s fuel system
inspection intervals
2. Describe the general safety practices to be used when maintaining or repairing natural gas vehicles
3. Describe the safety practices to be used when performing welding or hot work on or around a natural gas
vehicle
4. Identify the process to be used to detect a leak on a natural gas vehicle
5. Describe the processes to depressurize portions of the CNG fuel system
6. Describe the necessary actions to take when a gas detection system is activated inside a vehicle maintenance
facility

Slide Topic Content Notes

CNG Vehicle Inspection  NHTSA requires CNG cylinder
Requirements inspection
 Every three years/36,000
miles
 After any fire on the
vehicle
 After any vehicle
accident

 Industry best practice
recommends CNG fuel
system inspection

Waste Management’s CNG Fuel
System Inspection Intervals

Technician Safety and Awareness Training for NGVs © 2018 NGVi All Rights Reserved Page 22