Location of hot refuel to be as far from other aircraft/buildings as practicable/possible.
All pax to be vacated from aircraft or exit route (opposite-side door) to be clear for immediate evecuation, i.e. open, if not possibe (casevac on board).
All switches to be set prior to commencement and no further switching to be made once refuelling operation has commenced.
Position safety observer at front of aircraft with overall view of operation - aircraft, personnel and bowser.
Ideally pilot and groundcrew members directly involved (fueller and safety man) to be on hot mike prior to removal of fuelling cap.
Usual earthing/bonding procedure to be followed - earth to bowser to aircraft to earth.
Groundcrew to inform pilot:
1. When fuel cap removed.
2. When fuelling operation commences.
Pilot to inform groundcrew as required fuel load is approached and finally when to stop refuelling.
Groundcrew to inform pilot:
1. When fuelling operation ceases.
2. When fuel cap refitted - confirm fuel cap fitted and locked.
Earth lead to be disconnected and, along with refuel hose, to be refitted in the bowser's stowage.
Bowser to be removed from area.
Some form of major fire-fighting appliance should be positioned outside the refuelling area and ready for *immediate* use.
As usual, all movement in and out of the rotor disc area by personnel is to be strictly controlled and authorised by pilot.
There is a minimum safe distance from radio sources, be it ground or another aircraft, which should also be observed, but I can't give you specifics.
As this is a very dangerous operation, which may require immediate action on the pilot's part, no other task should be carried out at the same time - route planning, reading the paper, etc.
Arm out the window:
Ref doors and windows, yes the doors and windows on the side of the aircraft that refuelling is taking place should be closed, but doors/windows on the opposite side should be open to facilitate immediate evacuation.
Thud_and_Blunder:
Ref your bowser, shouldn't it have been chocked by the driver prior to refuelling? Bowsers should always be positioned so that, if all else fails, they can only move away from the aircraft (parked perpendicular).