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原文传递 Characteristics of fuel crud and its impact on storage, handling, and shipment of spent fuel. [Fuel crud]

题名：	Characteristics of fuel crud and its impact on storage, handling, and shipment of spent fuel. [Fuel crud]
作者：	Hazelton, R.F.;
关键词：	11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; DEPOSITS; CHEMICAL COMPOSITION; DENSITY; PARTICLE SIZE; THICKNESS; SPENT FUEL STORAGE; HAZARDS; SPENT FUELS; TRANSPORT; BWR TYPE REACTORS; DEPOSITION; DRY STORAGE; MATERIALS HANDLING; PWR TYPE REACTORS; RADIOACTIVITY; SPALLATION; DIMENSIONS; ENERGY SOURCES; FUELS; MATERIALS; NUCLEAR FUELS; NUCLEAR REACTIONS; PHYSICAL PROPERTIES; REACTOR MATERIALS; REACTORS; SIZE; STORAGE; WATER COOLED REACTORS; WATER MODERATED REACTORS
摘要：	Corrosion products, called ''crud,'' form on out-of-reactor surfaces of nuclear reactor systems and are transported by reactor coolant to the core, where they deposit on external fuel-rod cladding surfaces and are activated by nuclear reactions. After discharge of spent fuel from a reactor, spallation of radioactive crud from the fuel rods could impact wet or dry storage operations, handling (including rod consolidation), and shipping. It is the purpose of this report to review earlier (1970s) and more recent (1980s) literature relating to crud, its characteristics, and any impact it has had on actual operations. Crud characteristics vary from reactor type to reactor type, reactor to reactor, fuel assembly to fuel assembly in a reactor, circumferentially and axially in an assembly, and from cycle to cycle for a specific facility. To characterize crud of pressurized-water (PWRs) and boiling-water reactors (BWRs), published information was reviewed on appearance, chemical composition, areal density and thickness, structure, adhesive strength, particle size, and radioactivity. Information was also collected on experience with crud during spent fuel wet storage, rod consolidation, transportation, and dry storage. From experience with wet storage, rod consolidation, transportation, and dry storage, it appears crud spallation can be managed effectively, posing no significant radiological problems. 44 refs., 11 figs.
总页数：	Pages56
报告类型：	科技报告