Where are all of the humanoid robots? Get them in there with whatever the oil and gas industry uses for tapping pipes/containers under pressure. I'm only half kidding.
Flash forward to today, we are still in quite the same position where robots can do fancy, flashy tech demos, but when it comes to doing something useful that is also unpredictable, the know-now is still not there. Even teleoperation is not a robust answer to this yet, it still has some maturing to do.
https://www.pbs.org/newshour/science/robot-delivered-lethal-...
Unfortunately we can't force them to go in either. They threatened to pull the entire humanoid robot workforce if we try...
On a more serious note however, I'm surprised there aren't off-the-shelf remotely operated rigs for assisting with this sort of situation: highly flammable/explosive chemicals under pressurised containment that need relief.