This video uses the WIP Hydroproject Control Room as footage. You can view the map here: It is a little-known fact that the SKALA computer system operates on a one second delay; the DREG computer system does not. This means that the infamous time of 01:23:40 being when the AZ-5 button was pressed is factually incorrect. The computers actually recorded it at 01:23:39. But this is not the subject of today’s video. Our subject stays focused on the data recorded around this time, and the subtle data input two seconds later. At 01:23:41, a second AZ signal is input, however the last number has been lost due to the power outage that occurred when the reactor exploded. This begs the question: was this the AZ-5 button being pressed for a second time? If so, why? Today we will explore another Chernobyl mystery: the AZ-5 Double Press.
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