Helium refrigerated gas was found to be leaking from a container vessel
Suffolk Fire and Rescue Service were called to the scene at Felixstowe docks at 1.25pm.
Nine vehicles were called to the the scene with vehicles responding from Ipswich East, Woodbridge, Princes Street, Felixstowe and Felixstowe Dock.
A spokesperson for the fire service said: “This is a docked container vessel, which has had a small leak of helium refrigerated gas at Felixstowe Docks.
“Crews are in attendance to assist port management with removal of the container and securing the area.”
Many of the crews were stepped down following an assessment of the leak.
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