It is understood the man injured his hand while dealing with machinery.

He was later transported by ambulance to St John's hospital in Livingston, West Lothian.

A Scottish Ambulance Service spokeswoman said: “We received a call at 11.15 hours to attend an incident at the Grangemouth Refinery.

An ambulance was sent to scene along with our Emergency Medical Retrieval team and the Air Ambulance as a precaution. One male patient in their 30s was taken to St John’s Hospital for further treatment.”

A spokesman for Petroineos said an investigation into the incident is underway.

"Petroineos can confirm a third party contractor injured their hand whilst changing a wheel on a vehicle at its Grangemouth refinery today. The incident did not involve any of the refinery process plants.

The injured party was attended to at the scene by trained personnel from the company’s own response team prior to being transferred to the care of the local authority ambulance service for transportation to hospital.

We have no further details to pass on at this time.

The refinery is carrying out an investigation into the circumstances around the incident."

Worker rushed to hospital after industrial incident at Grangemouth oil refinery