Luckily, he was wearing all required personal protective equipment when he fell into the critical pool water. 8)
Worker falls into US nuclear plant's reactor cavity, ingests critical pool water
https://interestingengineering.com/culture/worker-falls-into-us-nuclear-reactor-cavity
Luckily the cavity had critical pool water in it. A 60 ft. freefall to the stainless floor would have left a mark.
we have solved the world's fresh water shortage conundrum,....
we have self-sustaining water,...