| 摘要 |
1,112,383. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 24 Aug., 1965 [28 Aug., 1964], No. 35459/64. Heading G6C. In a liquid metal cooled fast breeder reactor, instrumentation is provided for investigating the conditions inside vertical fuel channels. The instruments are mounted upon a rotary upper shield so as to be registerable with each channel. The services provided include, coolant temperature measurement by thermocouples, fission product detection by sampling tubes, coolant flow control by adjustment of gag valves, and acoustic monitoring. Fuel handling is also effected through the upper shield and a storage magazine is provided adjacent to the core and rotatable from the core shield outer surface. Heat - exchangers and coolant pumps are mounted inside the containing vessel within the liquid coolant. Shielding between the core and coolant circuit members is effected by vertical rods of steel sheathed, borated, graphite. Instrumentation columns, one for each fuel element assembly, are carried by the rotary shield, and extend downwards to a level just above the fuel assembly outlet ends. The instrumentation columns are flexible and are displaced laterally by linkage to permit operation of the fuel handling mechanism. The instrumentation cables may be carried on control rod assemblies.
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