Monday, 17 February 2014

Design of World's First Thorium based Nuclear Reactor is Ready

The design is being developed at Bhabha Atomic Research Centre (BARC), in Mumbai, India and aims to meet the objectives of using thorium fuel cycles for commercial power generation.

The AHWR is a vertical pressure tube type reactor cooled by boiling light water under natural circulation. The unique feature of this design is a large tank of water on top of the primary containment of vessel, called the gravity-driven water pool (GDWP). This reservoir is designed to perform several passive safety functions.

The latest AHWR design incorporates several passive safety features. These include: Core heat removal through natural circulation; direct injection of emergency core coolant system (ECCS) water in fuel; and the availability of a large inventory of borated water in overhead gravity-driven water pool (GDWP) to facilitate sustenance of core decay heat removal. The emergency core cooling system (ECCS) injection and containment cooling can act (SCRAM) without invoking any active systems or operator action.

The system is designed to stop functioning in the event of an emergency. There would be no run away fission events like what we saw in Chernobyl and Fukushima. All nuclear power plants around the world need to be replaced with Thorium technology.

[Posted at the SpookyWeather blog, February 17th, 2014.]

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