There was a loud blast in the hydrogen cracker plant of the refinery and a fire broke out which could be perceived from a distance of 15 to 20 km. Company fire tenders brought the blaze under control, sources said.
The plant was close down instantly as part of the disaster management drill of the company.
A senior NRL official told that there was no casualty or injury as the plant was automated and there was least deployment of human resources in the area.
ULFA’s anti-talk faction alleged responsibility for the fire which was dismissed as doubtful by senior police officials.
The ULFA alleged that it had used the similar device prior in the Duliajan and Guwahati refineries preceding year but these too had been showed up by both police and refinery authorities since both were caused by technical problems. The reason of the fire and the level of the damage are yet to be ascertained.