Ahmedabad, Mar 11 (Agencies): The Kakrapar Atomic Power Station in Gujarat’s Surat district shut down one of its two 220mw units on Friday after heavy water used as a coolant leaked.

”No worker has been exposed to radiation and no radioactivity was reported outside the plant,” said K.S. Pradeep Kumar, associate director at the Bhabha Atomic Research Centre (BARC), which oversees nuclear safety in India.

The leak in the heavy water system was detected around 9am and it was fixed in some time and the temporary emergency was lifted shortly afterwards.

Surat District Collector Rajendra Kumar said there was no leakage of radiation at the plant and the situation was under control.

On Friday, Japan was marking the fifth anniversary of Fukushima nuclear disaster, in which a monster tsunami destroyed the cooling system of the Fukushima Dai-ichi power plant causing a meltdown in three reactors, which then spewed radiation over a large area.

KAPS site director L.K. Jain said in a statement that radiation levels in and outside the plant are normal.

“Unit-1 of KAPS, which was operating at its rated power, was shut down at about 9:00 Hrs today. Consequent to a small leak in Primary Heat Transport (PHT) system, the reactor was shut down as intended as per the design provisions. All safety systems are working as intended,” the statement said.

”The radioactivity/radiation levels in the plant premises and outside are normal. KAPS 1 and 2 consists of two Units of Pressurized Heavy Water Reactors of 220 MWe each,” Jain added.

The Nuclear Power Corporation of India Ltd (NPCIL) runs KAPS, located on the border of Surat and Tapi districts near Vyara town of Tapi.