2000-2009 : The academician, " A . S . ", proposed a new biological warfare program, called the " Biological Shield of Russia " to president Vladimir Putin.
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Reactor hall of the RBMK-1500 at Ignalina Nuclear Power Plant, Lithuania the upper biological shield ( UBS ) lies several meters below the floor of the reactor hall.
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For one thing, the 2, 000-metric-ton Upper Biological Shield _ the reactor's " lid " _ was perched at a cockeyed angle above the reactor well, blocking the view into the reactor core.
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The top of the reactor is covered by the upper biological shield ( UBS ), also called " Schema E ", Pyatachok, or, after the explosion ( of Chernobyl Reactor 4 ), " Elena ".
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The only substantial solid barrier above the fuel is the upper part of the core, called the upper biological shield, which is a piece of concrete interpenetrated with control rods and with access holes for refueling while online.
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During decommissioning, all special nuclear materials ( fuel ) and certain highly activated components ( e . g ., control rods and shims ) were removed from the island to the US mainland, all piping systems were flushed, the reactor vessel and associated internal components within the biological shield were entombed in concrete and grout, and systems external to the entombment were decontaminated.
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-The central dot is the radiation source .-The two circle segments ('leaves') are the biological shield to protect the workers and the environment .-The outer ring is the transport system, the lower half of it is shielded from radiation by the biological shield and resembles also the loading area, the upper broken half symbolizes the rays hitting the target goods on the transport system.
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-The central dot is the radiation source .-The two circle segments ('leaves') are the biological shield to protect the workers and the environment .-The outer ring is the transport system, the lower half of it is shielded from radiation by the biological shield and resembles also the loading area, the upper broken half symbolizes the rays hitting the target goods on the transport system.
