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. "
I spent two summers as a cleaner at a pharmaceutical company in my late teens. The "round corners are easier to clean" were a thing there as well, reason I was told was that sharp corners will scrape off some residue from the cleaning cloths when you drag them over the corner.
Oh, ya, I can see this being really nice for the kitchen sink or the stand in shower. Right now, oil build up gets trapped in corners that require a brush to work out, which is tricky in the shower where it’s all calked.
It feels like the more things I use a kitchen sink for the more I appreciate corners. Cleaning is a little more involved but being able to e.g. set two buckets next to each other and have them be level is really really handy.
You know, I remember seeing this on older pictures, but I tried to come up with an example and couldn't, all recent pictures I could find had regular floor moldings.