Jet fuel trucks at airport

The dead mans ive only ever used were operated by being depressed with my hand. That way if i let go, it shut the pump off.

 

Thats the dead man in front of the pressure locking hose. Laying there...

 

So if the twin hose was a deadman, how do they recover vapor from the aircraft's tank(s)? Is there an annular vapor space between the fuel hose proper and its outer jacket?

 

Cant comment on commercial airlines, but military aircraft we had no vapor recovery with the hard locking pressure nozzle.

 

Those are the deadman or control cables. I believe they are air hoses connected to a controller. The operator has to squeeze the control or the fuel transfer stops. Another type of deadman control is mounted on the fuel tanker or hydrant truck and the operator just needs to pull a thin rope to keep the fuel transfer flowing. Obviously the "deadman" control is meant to stop fuel flow if the operator is incapacitated or drops the device. I did that job for about 3 years during college. I operated both fuel tankers (fuel source and pump on the truck) as well as hydrant truck (most big airports use this system). With this system the fuel is located in underground tanks/pipelines. The truck just needs to supply air pressure/ filter/ man lift to move the fuel from the underground system to the aircraft fueling panel and aircraft tanks.

 

When I refueled airliners there was no vapor recovery. Aircraft tanks vent to the atmosphere. On the underside of the wing you will see v-shaped notches. If there is a malfunction or you overfill the tanks that's where the fuel will spill. Never stand under those unless you want to take a fuel bath.

 

Im not certain. But from what I have learned around airplanes which is precious little. I can fuel, check and so on a small plane well enough on the ground but when faced with a 737 or whatever, I get a little bit shaky.

The plane has static electricity, the ground sometimes has a different charge. Think back to your childhood days running across a deep pile carpet and shock your parents zap. The fuel truck would be a source of that zap if the plane isnt grounded.

A friend of mine actually fueled big jets in KBWI for a while with a tanker truck but I think the big airports now a days rely on tank farms and pipe the fuel to the specific hardstand underground.

Small planes no problem. But big jets? Ive just said all I know about it and even some of it is shaky. I hate to try and fuel a big jet today. It's not for me. I need training and so forth. So I stay away.

I don't worry about it when I fly. I let the people that need to concern themselves with the total fuel onboard sufficient for the flight plus a minimum reserve for our total weight at take off. I let them worry about it. That is one less stressor off me.

 

Aircraft have no vapor recovery.
You also do a two way ground. The airplane is already grounded and you ground the truck to the aircraft and the ground point on the ground.

 

Speaking of refuelers I'm currently trying to figure out why the truck 09 freightliner m2 SN 5785 just stopped working the operator says it worked then it didn't the air operated pto switch does nothing when put into pump mode? Has no air to it at the 3 1/4 inch airlines. I jumped relay after pulling wire 95? And then jumped ps6 across each other then the PTO light came on but the PTO didn't kick in? I need help as I'm not familiar enough with the system to not need help. Regards Allen.