Adamantium wrote:
Do you even know what you are asking when you say "chain reaction?"
I don't think so.
First thing, find out how a reactor works and what happened at Fukushima, then it's pretty obvious what did and could happen.
Did they have uncontrolled criticality? Yes, several times. Did fuel melt? Yes? Was containment breached? Yes. Is water being poured over the core and then leaking through fissures in the containment vessel and then down to groundwater? yes.
What more do you want? A fission explosion? Not going to happen.
Exactly.
I think that about the worst that would likely happen when removing the fuel rods would be some release of radioactive dust into the atmosphere that could result in a local evacuation.