It’s a jumping puzzle.
Go to your right around to the far side of the room. Then, instead of working inward toward the elevator, hop to the slanted section of the wall (you can stand on it). Then hop to the shipping containers, then the forklift, etc. over to the pipes sticking out below the walkway, then up onto the walkway. Walk around to the items, then you can climb up a ladder to a small section of catwalk and then drop back down to where you started.
Checklist: Fuel, Oxygen, Power. First two are in the same area.
If all 3 are activated, and it still won’t fire, then it’s glitched. Try loading an earlier save and doing it again.