Page 47 - CNG ESP Participant Guide2024

Module 5: CNG Fueling Station Safety Systems and Fueling Practices

Module 5: Knowledge Check

At a CNG fueling station, the most important safety device you should be able to identify is:
□ Fire extinguisher
□ Protective eyewear
□ Emergency Shutdown Device
□ Dispenser

Emergency Shutdown Devices are identified by what?
□ Warning light
□ Yellow placard
□ Red placard
□ Blue nozzle

Different types of CNG fueling nozzles can be rated for different pressures. Which of the following is correct?
□ Blue indicates 3,600 psi; Yellow indicates 3,000 psi
□ Blue indicates 3,000 psi; Yellow indicates 3,600 psi
□ Blue indicates liquid fuel; Yellow indicates gaseous fuel
□ Blue indicates 5,000 psi; Yellow indicates 7,500 psi

If you are fueling a vehicle and find damage to any hose or nozzle, you should:
□ Fuel the vehicle anyway and do nothing else
□ Fuel the vehicle and then report to fueling station maintenance personnel
□ Attempt to repair the hose or nozzle yourself
□ Not fuel the vehicle under any circumstances and report the problem to fueling station maintenance
personnel

When fueling a CNG vehicle, the following conditions are normal:
□ A small amount of gas may escape the nozzle/receptacle connection when they are disconnected, and you
may be able to detect the smell of gas for a brief period of time.
□ A continuous loud hissing is present during and after fueling
□ Large quantities of natural gas can be seen and smelled leaking from the dispenser hose.
□ There will be total silence during the CNG fueling process.

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