There are so many things that could go wrong with the RBMK that it is something of a miracle it took so long for one to go fatally wrong. On that day alone, the emergency core cooling system on Reactor 4 had been disconnected for more than 11 hours by the time the test started. Going ahead with an experiment in the middle of the night when the operator’s judgment was impaired was just one more thing that eventually pushed the reactor over the edge.
2 Likes
