At 530 sieverts (53,000 rads(gamma)) per hour mega-rad hard electronics could last about 18 hours. Long enough to do some work, but expensive if the robot could

At 530 sieverts (53,000 rads(gamma)) per hour mega-rad hard electronics could last about 18 hours. Long enough to do some work, but expensive if the robot could not be rennovated and they had to have an army of expendable robots. Such electronics have existed for quite a few years in the aerospace industry. Hard to come by and expensive for sure.