What was the significant clelay in the test procedure at Chernobyl on April 25, 1986? A shortage of workers for the night shift A request from the electricity grid controller to keep power at 1600 thermal megawatt A delay in reactor startup A malfunction in the cooling system

The significant delay in the test procedure at Chernobyl on April 25, 1986, was due to a request from the electricity grid controller to keep power at 1600 thermal megawatt. This request caused a delay in the reactor startup, which ultimately led to the catastrophic explosion.