By Paul Greebler, Ernest J. Henley
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This quantity presents an intensive assessment of radiation results on built-in circuits, supplying significant directions for dealing with radiation results on parts. It encompasses a set of chapters in line with the tutorials offered on the overseas institution on results of Radiation on Embedded structures for area functions (SERESSA) that was once held in Manaus, Brazil, November 20-25, 2005.
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Extra info for Advances in nuclear science and technology. / Volume 4
FUEL CYCLES 3 3any 2 3of5 the 2 3gas-cooled 9 2 14 reactors can inIn principle, the fuel cycle2for 2 3combination 8 2 3 2 of2U04 , U , P u , or P u volve any as fuel materials and U , T h , or P u as fertile materials. Usually, however, one particular fuel cycle is advantageous for a particular class of reactor. In this section, the fuel cycles for several typical gas-cooled reactors will be reviewed with some emphasis on the reason for the fuel cycle choice. Typical characteristics of the fuel cycles will be discussed, including fuel enrichments, conversion ratios, and specific powers.
Furthermore, the liner is suitably insulated on the inside of the vessel to reduce heat loss and, consequently, the load on the cooling water system. The use of a prestressed concrete structure has safety as well as design advantages. The many tendons that are used provide a highly redundant system and, thus, a very high degree of structural safety and reliability. The tendons and end anchorages are available for inspection over the life of the vessel. Tests of this type of vessel show that they do not " fail " in the conventional sense that a crack can develop and suddenly propagate.
8 ft) and a height of about 3 meters. With this geometry, the fission products cannot be purged from the fuel elements before reaching the primary coolant stream, so that fission-product control depends primarily on holdup of the fission products in the coated particles within the graphite spheres. With the development of better particle-coating methods, the trend in advanced HTGR plants appears to be toward unpurged fuel elements. The fuel element for advanced HTGRs is shown in Fig. 5 (39).