Anyone know where all the engineers would be located in a plant like this - an onsite shielded bunker? What if they were to get hit by an explosion like this - remote redundant control far offsite?
I think the main control room and nearby offices are not bunker like but certainly reinforced to withstand damage from accidents. I have been onsite to a couple of reactors and most of the engineers are housed in regular administrative buildings with no special reinforcements but these are outside of the reactor building where the control room is located. There is no remote control room but there are (at least in the USA) dedicated communication channels to industry experts (probably GE engineers that designed these plants) available to assist and advise 24/7 during an accident. Unfortunately, one report said that 11 workers were injured in the explosion at Unit 3.