Let's say you work in the station and your desk is right next to one of these uranium oxide glazed tiles:

- You work about 2k hours per year in the orange office

- That would then be about 200 mSv per year

- "Exposure to 100 mSv a year is the lowest level at which any increase in cancer risk is clearly evident" (https://www.reuters.com/article/us-japan-quake-radiation-idU...)

I guess then that maybe we could (barely) observe a higher incidence of cancer for those who spend a lot of time next to the walls?