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| India-Pakistan |
| Indian Prototype Fast Breeder ReactorÂ’s massive safety vessel installed |
| 2008-06-24 |
| The construction of the Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, crossed “a mega milestone” on Tuesday when its massive safety vessel, a critical component, was installed inside the reactor vault. The cavernous vessel, made of special stainless steel, weighs 160 tonnes. It is 13.5 metres in diameter, 13.5 metres in height and 43 metres in circumference. Seventy petals were welded together by Larsen and Toubro to make it. It was a spectacular sight as a heavy-duty crane with a long boom gingerly lifted the vessel from inside a tall supporting structure on the ground. As it dangled in mid-air, the thermal insulation panels on its outer wall dazzled in contrast to the greenish waters of the Bay of Bengal in the background. The crane then slowly swung around the vessel over an aerial distance of 57 metres and lowered it precisely inside the concrete reactor vault, which is 13.8 metres in diameter and 17 metres in height. As the critical operation, which lasted two hours, ended successfully, applause rang out from several hundreds gathered around. Preparations got under way from Monday night with Anil Kakodkar, Chairman, Atomic Energy Commission and S.K. Jain, Chairman and Managing Director, Nuclear Power Corporation of India Limited (NPCIL), present at the site. The PFBR, which will generate 500 MWe, will use plutonium-uranium oxide as fuel and liquid sodium as coolant. The safety vessel will prevent the liquid sodium in the main vessel from coming in contact with the reactor vault. The main vessel will be placed inside the safety vessel. Dr. Kakodkar described the event “the most important milestone in the history of India’s Fast Breeder Reactor (FBR) programme” and “a very happy moment.” He told The Hindu, “It is a great effort on the part of a large team and I congratulate the entire team led by Prabhat Kumar, Project Director, PFBR.” Mr. Jain called it “the beginning of the march towards reaching maturity in building breeder reactors.” Other components of the PFBR were in an advanced stage of fabrication. “We are on course for the completion of this prestigious project,” he said. Mr. Prabhat Kumar said handling the large-sized, heavy, thin-walled safety vessel posed several challenges. It had to be lowered within a narrow radial gap of 160 mm without any impact on the vault so that the thermal insulation panels would not be damaged. Baldev Raj, Director, Indira Gandhi Centre for Atomic Research, Kalpakkam, said the vessel was a difficult component to install. “It was manufactured to world-class specifications and it will send a strong message about our capability in building fast breeder reactors,” he added. The PFBR will be built at a cost of Rs. 3,500 crore and attain criticality in September 2010. |
| Posted by:john frum |
| #5 WAFF.com Thread > NAVY.RU - RUSSIA WILLING TO HELP UK SCRAP REACTORS FROM NUCLEAR SUBMARINES [11 decommissioned RN nuke subs]. |
| Posted by: JosephMendiola 2008-06-24 20:40 |
| #4 |
| Posted by: john frum 2008-06-24 19:09 |
| #3 India's Chidambaram on Yucca Mountain While talking about nuclear waste management, he said India uses closed fuel cycle and this is also required because the same amount of uranium, when you recycle it through fast breeder reactors, will give you 50 times more power and if you close the fuel cycle with thorium, maybe it will give you 600 times more power. "So if you want to optimally utilise nuclear fuel resources of the world uranium and thorium, you will have to close the nuclear fuel cycle. So, the importance of the three-stage programme goes beyond just building the first generation of reactors," Chidambaram said. Americans have access to cheaper uranium but now they are also looking at reprocessing but the plutonium stored over a period as waste disposal Yucca mountain is actually a plutonium mine and since the half-life of plutonium is over 24,000 years, it could be used later as other radioactive products in the spent fuel would have died down. |
| Posted by: john frum 2008-06-24 18:10 |
| #2 Also spent fuel from their heavy water reactors. They plan 4 more breeders of 500 MWe size then to move on to 1000 MWe breeders. They are also beginning construction of a thorium reactor that will also burn Plutonium: advanced heavy water reactor |
| Posted by: john frum 2008-06-24 18:05 |
| #1 This will allow India to recycle spent fuel rods from conventional light water plants. They won't need a burial facility and what waste there is will decay in only a few centuries instead of tens of thousands of years. In fact, they could reprocess US spent fuel for us if they wanted to. |
| Posted by: crosspatch 2008-06-24 16:30 |