What are some high dose 'jumper' jobs?

[11324]

I know SG nozzle dam install/removal is up there. What are some other jobs where you have a short window to jump?

[Marlin]

No names but you know who you are. Long long ago far far away a combustion engineering plant failed to uncouple one of its control rods. When the upper internals were lifted and moved it was bent. It could not be lowered and with the incore detectors in the upper internals lifting it clear of the refueling pool would drastically increase the dose rates on the refuel floor. There was no option but to lift it and set it on the upper internals stand. The containment was evacuated with the exception of the recovery crew. On the polar crane catwalk was a rad tech with the polar crane operator, about a rem/hr on the catwalk during the transfer which was quick and smooth. The tech used the safety injection tanks as a shadow shield while monitoring dose to the crane operator. I hid behind the steam generator doghouse with a maintenance crew who ran out to detach the rod as soon as the upper internals were underwater. The dose to everyone involved was less than I expected but still more than we would have liked.