摘要:
The basket according to the invention can be used to incinerate waste inside an incinerator for a duration longer than fifteen minutes with no need for waste to be molten earlier, particularly when waste is introduced inside the incinerator. The basket is composed mainly of a glass fibre envelope (10): it is preferably stiffened by a lightweight metal structure (12) located inside or outside the envelope or built into it. A gripping handle (14) is installed on top of the assembly that is stiffened at the top by a metal tube (16) to which a lightweight metal structure (12) is fixed and by a base formed from a drip pan (18) fixed to the base of the lightweight metal structure (12). Application for incineration of toxic waste.
摘要:
Systems, devices, methods, and compositions are described for providing an x-ray shielding system including a flexible layer including a support structure having a plurality of interconnected interstitial spaces that provide a circulation network for an x-ray shielding fluid composition.
摘要:
Waste storage vessels formed from a composition including calcium silicate, magnesium or calcium oxides and an acid phosphate are provided. The composition may also include fly ash or kaolin with or without the calcium silicate.
摘要:
Radiation shields include an outer composite wall, an inner composite wall, and an enclosed fuel chamber disposed between the inner and outer composite walls. A fuel may be contained within the enclosed fuel chamber. Spacecraft include one or more such radiation shields, and may further include a fuel cell and a conduit providing fluid communication between the fuel chamber of the radiation shield and the fuel cell. Methods of forming a radiation shield system include forming an enclosed fuel chamber between an outer composite wall and an inner composite wall of a radiation shield, and providing fuel within the enclosed fuel chamber.
摘要:
Waste storage vessels formed from a composition including calcium silicate, magnesium or calcium oxides and an acid phosphate are provided. The composition may also include fly ash or kaolin with or without the calcium silicate.
摘要:
This invention deals with multi-component composite materials and techniques for improved shielding of neutron and gamma radiation emitting from transuranic, high-level and low-level radioactive wastes. Selective naturally occurring mineral materials are utilized to formulate, in various proportions, multi-component composite materials. Such materials are enriched with atoms that provide a substantial cumulative absorptive capacity to absorb or shield neutron and gamma radiation of variable fluxes and energies. The use of naturally occurring minerals in synergistic combination with formulated modified cement grout matrix, polymer modified asphaltene and maltene grout matrix, and polymer modified polyurethane foam grout matrix provide the radiation shielding product. These grout matrices are used as carriers for the radiation shielding composite materials and offer desired engineering and thermal attributes for various radiation management applications.
摘要:
A radiation shielding article 10 is in the form of a plurality of radiation shielding glasses 11 that are stuck together with resin films 12 therebetween, respectively. Each radiation shielding glass 11 is made of glass essentially free of Pb and having a lead equivalent of 0.03 mmPb/mm or more relative to an X-ray of 100 kV. Further, each radiation shielding glass 11 has a composition containing, by mass %, 50 to 65% of SO2, 5 to 15% of Al2O3, 0.1 to 9% of ZrO2, 10 to 27% of MgO+CaO+SrO+BaO+ZnO, and 7 to 15% of Li2O+Na2O+K2O.
摘要翻译:辐射屏蔽制品10是多个辐射屏蔽眼镜11的形式,它们分别与它们之间的树脂膜12粘合在一起。 每个辐射屏蔽玻璃11由基本上不含Pb并且相对于100kV的X射线的相当于0.03mmPb / mm以上的铅的玻璃制成。 此外,每个辐射屏蔽玻璃11具有以质量%计含有50〜65%的SO 2,5〜15%的Al 2 O 3 0.1〜9%的ZrO 2,10〜27%的MgO + CaO + SrO + BaO + ZnO,7〜15%的Li 2 O 3, O + Na 2 O + K 2 O。
摘要:
A porcelain enamel composition as a neutron absorbing material can be prepared of a major proportion by weight of a cadmium compound and a minor proportion of compounds of boron, lithium and silicon. These compounds in the form of a porcelain enamel coating or layer on several alloys has been found to be particularly effective in enhancing the nuclear safety of equipment for use in the processing and storage of fissile material. The composition of the porcelain enamel coating can be tailored to match the coefficient of thermal expansion of the equipment to be coated and excellent coating adhesion can be achieved.
摘要:
The invention is a ceramically-bonded large-area neutron absorber articles of low density having a space filling ofabout 40 to 60% by volume boron carbide+silicon carbide in a B.sub.4 C:SiC ratio of about 9:1 to 1:9 andabout 10 to 20% by volume of free carbon, the remainder pores.They have a density of from about 1.5 to 2.2 g/cm.sup.3 and a flexural strength of from about 20 to 50 N/mm.sup.2 at room temperature measured according to the 3-point method, which strength after the corrosion test of immersion for about 3000 hours in boiling water, drops by less than about 40% of the initial value. Graphite powder may optionally be included with a pulverulent organic resin binder and a wetting agent, molding the mixture under pressure at about room temperature, curing the resin binder at temperatures of up to about 180.degree. C. and then coking the molded plates in the absence of air at temperatures of up to about 1000.degree. C. under a controlled temperature program.
摘要:
The present invention relates to neutron-absorbent oxide or oxynitride glasses containing gadolinium and a process for their preparation.The glasses according to the invention, which incorporate silicon, aluminum, oxygen or oxygen and nitrogen, additionally contain gadolinium in a proportion of approximately 5 to 15 atom %.