1.3.6.1.4.1.61513TIL CS energy made a video on Callide C4 generator explosion - aka what happens when a coal generator becomes an unplanned motor.
Its pretty good https://www.youtube.com/watch?v=vbLvjFohK9g
YouTube
Attractive Nuisance@xssfox I have Many Questions after watching that video. Not least why they didn't flip the connector back after disconnection caused the power outage.
It seems from the video like that would have been a safe back-out step in the event of unexpected power failure, and would have restored the emergency pumps at least.
But I guess the video is to explain what happened, not what could have happened.
@diffrentcolours from memory of reading the report the switching people left the room and eventually evacuated. This is because they were unsure of what happened, what the state was and what was safe.
I agree with their decision as making panic switching decisions can often lead to catastrophic results and the system is meant to fail safe
@xssfox Oh yes, I don't think they should have done it as a panic decision. I was thinking it might have been a pre-considered, documented contingency backout step.