Emergency alarm tests to sound at oil refinery
ExxonMobilResidents are being warned ahead of the sounding of an emergency alarm at an oil refinery.
The annual alert is due to sound at the ExxonMobil Fawley site, near Southampton, at 14:30 and 19:00 BST on Tuesday.
The Control of Major Accident Hazards (COMAH) alarm will be heard as a two-tone warble for about one minute before an all-clear single tone. ExxonMobil said "no action" was required from residents.
The COMAH alarm has never been activated for an emergency in more than 70 years of the refinery being in operation.
Other silent tests are carried out each week.
Running 24 hours a day, 365 days a year, the complex produces fuels and chemical products, including liquefied petroleum gas, chlorine, ethylene, and crude oil.
About 2,500 staff and contractors work on the 3,250-acre site, which first opened in 1951.
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