Isle of Man Energy is asking people not to panic if they see the emergency services rushing to its facilities in Douglas Harbour this week.
The company says it's holding an emergency response exercise at its gas sphere site on Wednesday, July 22.
It'll involve vehicles and staff from the Fire and Rescue Service, Civil Defence, Coastguard, Health and Safety, paramedics and police.
The 90-minute training drill is due to get underway from 2pm.
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