A fire at North Hyde Substation led to a power outage at London Heathrow in March, affecting thousands of homes and businesses. The National Energy Systems Operator identified moisture in high-voltage equipment as the cause of the short circuit, which ignited oil and resulted in the fire. This moisture issue was known since 2018, but no corrective actions were taken. National Grid Electricity Transmission is now reviewing its oil sampling and testing processes. Nearby data centers effectively managed the situation during the outage.
Moisture intrusion into a high-voltage bushing caused a short circuit during a fire at the North Hyde Substation, disrupting power to Heathrow and surrounding areas.
The fire, identified in a National Energy Systems Operator report, caused widespread outages affecting homes, businesses, transportation, and healthcare facilities.
The elevated moisture causing the fire had been a known problem since 2018, but necessary corrective actions were not implemented to address it.
Data centers nearby successfully managed the power loss, showcasing effective crisis handling amid the significant operational disruption at Heathrow.
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