Slightly off topic but humorous. I worked in the test and assembly of CRDMs (Control Rod Drive Mechanisms (Naval Reactors). We had huge complex test stands. One day an engineer, not me, tripped over a 120 VAC plug and ended up scramming a CRDM. I came up with a great idea, everything became twist lock plugs and sockets. Doing for technology today what should have been done yesterday.
Oh yeah, this was a train wreck explaining to Navy Nuclear why we had a unscheduled SCRAM of a part they were paying a million dollars for. They have no sense of humor. 
Ron
Ron