If the ‘legs’ are not completely inserted and the robot is left in that position, it could fall down at any time. If that happens, it spells the loss of a precision machine that's said to be worth several hundred million yen. That’s why I was sent in to enter the generator, on very short notice, to replace the robot back to its correct operating position before that happened. I started putting on the gear to enter the housing at a spot near the steam generator. Two workers helped me put it on. I was already wearing two layers of work clothes, and on top of those, I put on Tyvek protective gear made of paper and vinyl, and an airline respirator. Plus, I wrapped a lot of vinyl tape around my neck, my wrists and my ankles, to block even the slightest opening.