Heathrow: Fault that caused power outage was ignored for seven years
Wednesday, 2 July 2025 ()
The substation fire that caused Heathrow’s closure earlier this year was likely caused by a “catastophic failure” of equipment, a report has revealed. A damning report into the incident found National Grid had failed to address excessively high moisture levels for several years despite concluding they should be replaced. “This review has seen evidence that a catastrophic failure on [...]
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