The radiation level within the building is 2-3 microsievert per hour. They sleep in conference rooms and hallways in the building. To shield them from radiation from the floor, they cover themselves with lead-containing sheets before they put on blankets.
That is some serious dedication to your job when you sleep under lead sheets at your FAILING NUCLEAR POWER PLANT! These guys and gals are sacrificing their lives in order to protect the country they love from nuclear contamination.