A319 CREW REFUELS AT FBO AFTER DIVERSION WITH NUMBER 1 ENGINE RUNNING; PAX ONBOARD AND NO AVAILABLE MEANS OF EXIT.

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WHILE OPERATING FLT TO ZZZ1; TSTMS AT ZZZ1 REQUIRED FLT DIVERSION TO ZZZ. AFTER LNDG; RECEIVED INFO FROM DISPATCH VIA ACARS TO CONTACT FBO OPS FOR PARKING AND SVCS. THERE WERE SEVERAL OTHER ACFT WHICH HAD ALSO DIVERTED THAT WERE ALSO PARKING AT THE FBO RAMP. TO FURTHER COMPLICATE MATTERS; THE APU ON OUR ACFT WAS INOP. I SENT AN ACARS TO DISPATCH REMINDING THEM WE NEEDED PWR; AIR CONDITIONING; AND A START CART. AFTER BEING PARKED ON THE FBO RAMP; I ADVISED FBO OPS OF OUR REQUIREMENTS FOR GND SUPPORT. I WAS TOLD THERE WAS NONE. I KNEW THAT FUELING WITH #1 ENG RUNNING WAS ALLOWABLE BUT JUST TO CONFIRM I SENT ANOTHER ACARS TO DISPATCH TO HAVE THEM CONFIRM. RECEIVED FROM DISPATCH VIA ACARS TOTAL RAMP FUEL TO BE LOADED WAS 13000 LBS WITH PAPERWORK TO FOLLOW. BY NOW; A FUEL TRUCK HAD CONNECTED TO THE ACFT. WE WOULD BE FUELED FIRST I ASSUMED BECAUSE WE HAD AN ENG RUNNING WHILE THE OTHER ACFT WERE ALL ON AUX PWR. ALL COMS WITH GND CREW WERE THROUGH FBO OPS -- NO HEADSET COMS WERE AVAILABLE. I WAS CONCERNED THAT WE WERE ON A BUSY RAMP NOW WITH AN ENG RUNNING AND NOT IN DIRECTION COM WITH GND CREWS. WE RECEIVED ACARS FROM DISPATCH CONFIRMING REFUELING WITH #1 ENG ON AND #2 ENG OFF -- REF OPERATING MANUAL. WHILE WE WERE LOOKING UP THE REF IN THE MANUAL; REFUELING BEGAN. I THOUGHT WE WERE IN COMPLIANCE WITH ALL REQUIREMENTS -- ALL EXITS WERE ARMED AND AVAILABLE AND ENG #2 WAS OFF. AFTER HAVING SOME INITIAL PROBS GETTING THE LAPTOP COMPUTER TO BOOT UP; WE OBTAINED THE MANUAL REF. FUELING WAS NOW ALL BUT COMPLETED. WE SAW THAT WITH PAX ON BOARD; A PAX EXIT (JETWAY; STAND; OR INTEGRAL STAIRWAY) MUST BE IN PLACE. THIS REQUIREMENT HAD NOT BEEN MET. PRIOR TO OUR DEP FROM ZZZ TO ZZZ1; WE REQUIRED ANOTHER REFUELING. THIS TIME WE HAD FBO POS A MOBILE STAND BY A PAX EXIT. LESSON LEARNED: WHEN FEELING RUSHED -- STOP! REVIEW/DISCUSS ALL PERTINENT INFO. PROCEED WITH CAUTION.