Page 25 - Penske_Student Guide Book

Module 5: Performing Repair Work in Modified CNG Maintenance Facilities

Learning Objectives
1. Describe the differences between a modified and unmodified CNG maintenance facility.
2. Describe the types of repairs that are allowable to be performed inside a modified CNG facility.
3. Describe necessary actions to take when a gas detection system is activated inside a vehicle maintenance
facility.

Slide Topic Content Notes
CNG Maintenance Facilities
 CNG compliant facilities
(Modified Facilities)
 Have been physically
modified to allow any
type of repair or service

 Non-compliant CNG facilities
(Unmodified Facilities)
 Have not been physically
modified so special
procedures are
necessary

 If you are unsure whether
you are working in a
modified facility, ask your
supervisor.

Service on Any of These  Fuel receptacle
Components is Allowed in a  Secondary check valve
Modified Maintenance Facility  Defuel valve and receptacle
 Fuel lines and fittings
 Cylinder valve(s)
 Cylinder(s)
 PRD(s) and vent line(s)
 Manual quarter-turn shut-

off valve
 High-pressure coalescing

filter
 Mechanical pressure gauge
 Shut-off solenoid valve
 Pressure regulator

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