In Gujarat, one Unit of Kakrapar Atomic Power Station was closed at about 9.00 hours today while it was operating at its rated power. According to Nuclear Power Corporation of India Limited- a Government of India enterprise, the close down was caused following a small leak in Primary Heat Transport (PHT) System. Official release said that all safety systems are working as intended. The radioactivity and radiation levels in the plant premises and outside are normal. Kakrapar Atomic Power Station – KAPS-1&2 consists of two units of pressurized heavy water reactor of 220 MW each. The reactor was closed down as intended as per design provisions. Meanwhile it is learnt that all employees have been asked to remain in the premises till further notice as investigation is going on into cause of automatic close down following leakage of coolant.