r/movies, I need your help with remembering a movie

I'm thinking of a specific scene where someone is being really cautious and needs to de activate a reactor (or something like that, I don't know the context). They grab onto a handle, twist it and pull upwards. There is a bunch of steam and I think that it is a glass tube. I'm not thinking of The Rock. If someone has any idea where this scene is from I would appreciate it if you told me. Thankyou!!