"Workers were working in the power station when the boiler burst all of a sudden," Additional District Magistrate, Avdesh Tiwari told PTI.
"The cause leading to the accident is being ascertained and the power station premises have been cordoned off as a precautionary measure," he said.
Seven of the injured have been admitted at the Nehru Medical hospital, AMU and the rest are being treated at other hospitals.
Senior District officials have rushed to the spot and additional police force has been posted around the area.