Refueling safety question

[kujosan]

Hypothetically, after you're filled up and the pressure in the line is at 4000psi, is it possible to (accidentally) remove the nozzle without turning off the valve (resulting in the nozzle shooting away and expelling gas everywhere)? Or does the high pressure in the line prevent the nozzle from being removed?

I scared myself the other day when I started to reach for the release collar before shutting off the valve. Luckily I caught myself, but it made me realize that I ought to recognize the potential hazards and give a commensurate amount of respect and concentration to the act of refueling.

A follow-up question: if the emergency shut-off switch (red button on pump) is used after such a scenario, will the switch reset after the valve is shut off, or is a service call / manual reset required? Will an alarm go off and notify emergency services or is a separate call required?

Thanks,
Kujosan.

[Timon]

Re: Refueling safety question

Nothing should happen. When you move from the fill to mid, vent, position any pressure in the valve will be released. You really can't move the lever to the release position until the venting is complete.

[John Mitton]

Re: Refueling safety question

There is no way in the world you are gonna get that collar to budge without first venting the hose pressure down. But you are right, always use your head when refueling.

[cngmike]

Re: Refueling safety question

A follow-up question: if the emergency shut-off switch (red button on pump) is used after such a scenario, will the switch reset after the valve is shut off, or is a service call / manual reset required? Will an alarm go off and notify emergency services or is a separate call required?

the dispenser will reset but the compressors will probably need to be reset. as for alarms most likely not. Always call the posted number if you have a problem or concern at a station.