Port Blair, Dec 19: It is brought to the notice of general public and Govt. departments that fixing of vibration dampers in Panther-I and Panther-II main transmission line will be carried out by M/s. Power Grid Corporation of India Ltd., on 20.12.2014. Due to this, if required, one hour load shedding will be carried out on 20.12.2014 from 0900 hours to 1500 hours in Port Blair and South Andaman areas.