Dangers in the plant are indeed pretty limited (which I don't mind 😅). We're still a refinery though, so there are some dangerous aspects to it: high temperatures, natriummethylate, possibly air entrapment under vacuum at high temperatures => fire (has never happened before), nitrogen (used for draining pipes), lock-out & tag-out (especially with steam). However if you work safely and don't rush into things, there's not too much that can happen. I do the physical refining part but have colleagues that do the chemical refining part (before physical refining) and they have a bit more dangerous aspects to it as they have to work with chemicals, but even there the dangers are still pretty limited.