Waiting for the comments about how hysterical you are for posting facts....
Facts is facts.
Working in a high radiation field is something that sometimes has to be done. The risk management strategy is limit the time to limit the overall dose.
It’s just that once someone has reached his/her dose limit, they have to be rotated out and can’t go back in a radiation field for at least a year. If it’s a labor-intensive operation like this, they will go through a lot of people.