Chemical plant blast: in the wake of the blast at Buncefieid, investigations are under way after an explosion at a Teesside chemical plant.(Incident Reports)

The explosion happened on a pipe at the Terra Nitrogen (UK) Limited site, in Billingham recently.

Emergency services declared a major emergency after a fire started involving mixed gases including hydrogen, nitrogen and ammonia.

Two people working at the site were treated for minor cuts and shock. Residents reported hearing the blast and seeing a ball of flame.

Roads were sealed off around the scene and residents were advised to keep doors and windows shut as a precaution. The plant was shut down.

By the early morning, police said the incident had been scaled down and there were no off-site implications or risks to the public.

UK Manufacturing Director of Terra Nitrogen UK Limited Ashraf Malik said: "We would like to apologise to anyone who has been inconvenienced by the need for the precautionary actions and would thank people for their patience and understanding during the incident. …

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