For this to happen in Japan is for me more than a little suspect.
I'll come straight out with it...
I'd suspect SABOTAGE as the reason that Reactor is in such a mess right now.
AH come on, You've never had it so good.
No time for your conspiracy theories now buddy-boy.
You'll have the Americans raving about Radiation Resistant Cockroaches in the wiring bundles being the cause .... I mean we had that once before at an American reactor when insects had eaten through cabling in a console, - Didn't we, or was that just another dream? Yes, it was a dream. It was the Brown's Ferry Reactor, when a Candle burnt through the cabling.
http://www.ccnr.org/browns_ferry.htmlFrom there it's just a short flash-back step and you're back in the 1970's, with your own 'can' ....

Naw, my option. Head in a bucket of sand, - Cheap and Inconspicuous ....
All this 'murican huffin' and puffin'; it'll all blow-over.