I was curious and went looking. This is the closest I found after a quick google search. It refers only to lighting options in the reactor chamber not the hallways and such.
"There are some obvious considerations: all underwater nuclear lights should be crafted from stainless steel with rounded and smooth surfaces for easy decontamination, and have no sharp or jagged edges to reduce the risk of workers tearing safety gloves or clothing. "
https://www.nsenergybusiness.com/analysis/featurehow-to-choo...
"There are some obvious considerations: all underwater nuclear lights should be crafted from stainless steel with rounded and smooth surfaces for easy decontamination, and have no sharp or jagged edges to reduce the risk of workers tearing safety gloves or clothing. "