Heathrow power outage 1

[Hoxton123]

Heathrow Airport closed all day after nearby fire causes power outage - live updates

Flights are cancelled and diverted mid-air as Europe's busiest airport closes until midnight over a "significant power outage".

www.bbc.co.uk

i do now know what the substation voltages are, but one of the two transformers is completely burnt, and i guess they isolated the substation in order to fight the fire

 

[Alistair_Heaton]

Scottish political aviation humour...

 

[oldrunner]

Maybe some of the sparkies here can help, but it loks to me,from what I've been able to clean, is that these two TX are the A and B 275kV. The third on the right looks like an add on for local power distribution.

For street view it looks very much to me like there are no fire walls between these two. Is that normal? Bearing in mind this substation might be 50 years old.

Any other comments on spacing or design?

View attachment 6947

The latest ASCE 113 Substation Design Practice Manual has a chapter on different kinds of protection walls for collateral damage from explosions. Also most current transformers are designed for the cover to explode upward before the side wall panels.

 

[davidbeach]

And with decent protection you detect the fault and clear the transformer long before it gets to the interesting stage.