For those who enter the reactor buildings, including the three damaged in the 2011 earthquake and tsunami, they must use maximum protection — full facemasks with filters, multi-layered gloves and socks, shoe covers, hooded hazmat coveralls and a waterproof jacket, and a helmet.
As workers remove melted fuel debris from the reactors in a monumental nuclear cleanup effort that could take more than a century, they are facing both huge amounts of psychological stress and dangerous levels of radiation.
https://apnews.com/article/japan-fukushima-plant-radiation-safety-4efe204a48f952137cac5a44b41f93ae