No abstract available

[en] Industrial radiography plays a vital role in Non Destructive Testing in getting interior defects in materials revealed. In radiography about two-thirds of the radiation reaching the film is scattered radiation which does not form the image of the defects. Scattered radiation generated inside and outside a material reduces image contrast and consequently it will have a considerable effect on sensitivity of detection of flaws. The effect of scattered radiation on radiographic sensitivity and the possibilities of measuring scattered radiation have been studied. A number of methods to reduce the effect of such radiation have been taken into consideration and tested. The different conditions used to measure reduction in scattered radiation intensity were with and without lead intensifying screens, use of filters, maskings and increasing the source to specimen distance. The most effective method was found to be the use of filters between the specimen and film

No abstract available

No abstract available

[en] Published in summary form only

[en] A device for separating gases of different mass is discussed. Such a device could be used in a laser-driven spin exchange source of polarized hydrogen atoms to reduce the contamination of alkali atoms. A Monte Carlo simulation has shown that the suggested apparatus based on a commercial turbo pump could reduce by a factor of 10-15 the concentration of the alkali-metal atoms in the hydrogen flow from a laser driven polarized source. This would greatly enhance the effective polarization in hydrogen targets

[en] The BIF filter room within the ICPP Fuel Receiving and Storage Facility, CPP-603, has been identified as a high priority item on the INEL D and D Long Range Priority List. Decommissioning the BIF Filter Room will: (1) eliminate a potential radiation hazard; (2) eliminate a potential source of contamination; and (3) complete the required remedial action for a facility covered under the DOE Surplus Facilities Management Program's National Plan. This D and D plan provides the disassembly and removal of the entire contents of the BIF filter room, except as noted in Section 5.2

[en] The bottom nozzle has an adapter plate, supporting feet and a device for particles retention made by a filtering plate with holes and fixed on the inferior face of the adapter plate

[en] The quest for higher processing speeds of E-Beam curtain machines is addressed, and three possible solutions are presented. The increasing of the yield value of an accelerator by means of enhancing its copper window transparency is one of the best ways to solve this problem leading to less expensive and more efficient machines. (author)

[en] A variety of sludge and floc wastes arise in the UK from the storage and reprocessing of spent fuel. These include the products of fuel cladding corrosion and various liquid effluent clean-up processes. Many of these wastes are currently stored without pre-treatment in silos, tanks and ponds. Strategies for conditioning these wastes are being developed. These are based on cement encapsulation with the products being kept in retrievable stores until suitable disposal facilities become available. The solid concentrations in the suldge and floc wastes as they arise are generally quite low. Since the volumes of wastes encapsulated in cement are largely determined by the amounts of free water retained with the wastes there are strong incentives for some form of water removal pretreatment. This would lead to cost savings through reductions in plant size and in the volumes of waste for disposal. Critical appraisals have been undertaken of the potential of a wide range of dewatering options, including thermal and filtration processes, for treating various of these intermediate level wastes. In these appraisals the performance of the total system including feeding, product transfer, process control, plant flexibility, maintenance, secondary effluent generation and treatment etc has been evaluated. This paper describes some of the more favoured processes which have been evaluated experimentally as part of these assessments