Remote handling

Process Feature Size Equipment Remote handling Corrosion resistance... 

The stability of the pyrotechnic mixture has been studied, including the effect of hydrogen content of the hydride [1]. Presence of moisture and impurities adversely affects stability [2], and remote handling facilities for the mixture have been developed [3],... 

Meyer and Rossler 101) showed that the overall yields for wet and dry extractive procedures are comparable, being approximately 60% for Some workers have found that yields vary somewhat, due to adsorption of evaporated At onto vessel walls, and to the possibility of the retention of astatine within the target due to the formation of nonvolatile compounds 11). However, the dry evaporation method is more applicable to studies with high-activity targets it is rapid and lends itself to further development within the scope of remote handling techniques. Aspects of both extraction approaches have been discussed widely 2, 7, 33, 89,101,116,120,160). 

Subclassifications of Fuel-Cycle Wastes. As shown in the third level of the hierarchy in Figure 1.1, transuranic waste and low-level waste are further divided into different subclasses. The subclassification of transuranic waste as contact handled or remotely handled is based on the level of external radiation in contact with a waste package. This subclassification is related to requirements for protection of workers during waste operations, but it is not related to requirements for protection of the public following disposal. 

Existing hazardous waste classification systems frequently include subclassifications of basic waste classes to facilitate waste management (see Sections 2.2.4, 4.1.2 and 6.6). Examples include Class-A, -B, and -C commercial low-level waste and remotely-handled and contact-handled transuranic waste. These waste subclassifications are not expected to be significantly affected by a risk-based classification system unless particular wastes would not be generally acceptable for the disposal using the intended technology. For example, there is no inherent incompatibility with the system... 

The mixing is done under vacuum, and the fully degassed mix is poured into the mold using remote handling equipment. As both chambers are under vacuum, there is no air to be displaced and the mold is filled completely with no entrapped gasses. In certain units, the mix can be pressure-transferred to... 

The obvious problems associated with the application of plasma spraying in a Tokamak power reactor arise from the necessity of using remote handling techniques because of the induced radioactivity. Such techniques for large scale plasma spraying in geometrically complicated devices are not presently available and would have to be developed. 

In contrast to plasma spraying, low pressure plasma CVD does not require any remote handling technique. However, there is yet no experience with large scale applications of this method, particularly in metallic vessels. This is the first goal towards which future studies have to be directed. Very little is also known about the adherence of the coatings deposited by low pressure plasma CVD and their resistance against thermal shock. The choice of the best material for such coatings is presently open to discussion. 

There is a continuous stream of improvements in PC. Control of machines continually enters new eras that dramatically improve ease of machine setup, allow ease of ensuring to meet fabricated product requirements, more uninterrupted operation, simplify remote handling, reduce fabricating times, cut energy costs, boast part quality, and so on. 

The selective extraction of a radioactive nuclide as a nonpolar compound or complex from an aqueous solution by an immiscible organic solvent Is frequently the most satisfactory method for making a fast radiochemical separation In either macro or trace concentrations. Separations by solvent extraction are simple, convenient, clean, and rapid. They usually require apparatus as uncomplicated as a separatory funnel and may readily be adapted to remote handling procedures. 

It is also important to keep in mind, when designing production equipment, that all sense of touch is lost when fingers are replaced by remote handling tongs. 

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