After a long debate,Bangladesh has finally agreed to the Russian contractor,s decission to change the reactor tehnology for better safety for the rooppur Neclear Power Plant. It was originally planned that 3rd generation VVER 1000 reactor, wich a capacity of 1000MW, would be installed at Rooppur.But now, VVER 1200 reactor, with around 1200 MW capacity,will be used.VVER, wich stands for Water-Water Energetic reactor, is a series of pressurised water reactor designs for nuclear power plant originally developed in russia. currently operating Russian VVERs are safe designs than those used during the 1986 chernobyl disaster. The VVER 1200 is an evolution of the VVER 1000 design, with better safety mechanisms in place such as faster shutdown, passive heat removal system and a core catcher, wich will come in to use in case there is a massive accident like the Japans Fakushima. The passive heat removal system utilises a cooling system and water tanks built on top of the containment dome. a core catcher is made from special concreate ceramic to prevent material from tricling through . VVER power stations are or will be used by Argentina, Armenia, Belarus, Bulgaria, China, Czech Republic, Egypt,Finland,jordan,Hungary,India, Iran, Slovakia,Turkey,Ukraine,Russia and Viatnam.VVER 1200 designs will be altered taking into account seimic, climatic and other conditions, particularly considering the lessons learned from Fakushima disaster foer years ago.
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