I'll tell you what. When I was on the ship we carried nukes. They as such didn't worry me. Two other things were a far more likely accident waiting to happen. One was like you mentioned the LOX Plant the second would have been a steam break. The LOX Plant had the biggest potential for a mass causality explosion. If you had any sense it would put the fear of GOD in you. To work in there you had to have your stuff together.
My division had The LOX Plants, Elevators and conveyors, Air Conditioning & Refrigeration, Machine Shop, Ships Services like heat and galley equipment, and the Boat Shop where the liberty launches and emergency generator engines were maintained. I stayed out of 02N2. I worked AC&R mostly and part time as a pushed into service engineman on boat crew and a couple T.A.D. stints to the ships fire department which was it's own division.
I don't know if all carriers went to a full time Fire Department in 1980 but we did. It started out in the yards but was made permanent. It made good sense to pool the firefighters rather than put all the Hull Techs and Gunner Mates at risk. The Fire Dept also had to do fire station and hatch maintenance ship wide.