00:00This was an unprecedented event of very significant magnitude and I would like to
00:05thank the 70 firefighters who put the blaze out and the staff from National Grid in Heathrow
00:11who were able to get flights landing at Heathrow again within about 18 hours of the fire starting.
00:19I spoke to the Chief Executive of Heathrow myself on Friday morning. He explained to me
00:25at that point in time that there are multiple sources of power that feed the airport but the
00:30scale of the disruption meant there were particular problems as I understand it in terminals two and
00:35four. They had to reconfigure the power supply. There were some backup generators available,
00:41diesel electricity generators. They were designed to protect the critical systems in the airport
00:49and not to power the entire airport. Heathrow has commissioned an investigation into the way
00:56it dealt with this issue and its resilience planning. The government has also instructed
01:02NISO, which is the National Energy Systems Operator, to conduct a review of the incident
01:08itself at the substation and also to look at whether there are any wider lessons we should
01:12learn in terms of the energy resilience of our critical national infrastructure.
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