Glove box, design

For this study we chose a mass ratio of 1 100, plutonium dioxide-to-nitrate melt. The experiments were performed in a glove box, designed for containment of high alpha-activity materials. Plutonium dioxide and equimolar NaN03-KN(>3 were added to the reaction vessel, and the temperature was increased to 525°C. The temperature exceeded 350°C approximately three hours, and 500°C for at least one hour. No reaction of plutonium dioxide was noted at any time. The melt remained clear and colorless throughout the entire period. It therefore appears that plutonium dioxide does not react with the alkali metal nitrate melt to produce a plutonate within the temperature range cited (<525°C). The temperature of the melt was then reduced to 275°C, and nitric acid vapor was added. At no time were there any visual indications of solubility or reaction of the plutonium dioxide in the melt. 

Fig. 6.2-45 Glove box design of the processing part of a rotary punch-and-die tabletting machine demonstrating WIP (courtesy Fette, Schwarzenbek, Germany)...

The Rapid Response System (RRS) will be set up as part of the PBNSF operation but will be located outside the PBNSF structure and will be used to process all CAIS items. The overpack containing the CAIS is removed from storage and transported directiy to the RRS. The RRS contains a series of linked glove boxes designed to remove the CAIS ampoules and bottles from their packages, identify their con-... 

The RRS is a mobile glove box designed to dispose of chemical agent identification sets (CAIS). CAIS are test kits used from 1928 to 1969 to train soldiers in chemical warfare. The sets contain small amounts of mustard and lewisite and a variety of highly toxic industrial chemicals. 

When glove boxes are used for abrasive blasting, their design must take into account that the ejector of the abrasive material is driven by compressed air. This influences the chosen flow rate, which should be large enough to generate an air velocity of at least 3 m s" in the openings. The necessary exhaust airflow rate recommended by INRS is then... 

Performing the cross-metathesis reactions at reflux (open to an argon atmosphere in a glove box) was designed to help remove the unwanted ethene produced by the reaction. 

Washing Procedures. The metal halide-pyridine reaction mixtures were washed in a sealed apparatus designed for continuous extraction in vacuo. Samples were transferred to and from the apparatus in a glove box under an atmosphere of argon. Washings were considered to be complete when the filtrate coming through the filter became colorless. 

Figure 17.11 Transmission spectroelectrochemistry cell designed for use with room-temperature haloaluminate melts and other moisture-reactive, corrosive liquids, (a) Auxiliary electrode and reference electrode compartments, (b) quartz cuvette containing the RVC-OTE, (c) brass clamping screw, (d) passageway between the separator and OTE compartment, (e) fritted glass separator, (f) A1 plate, (g) lower cell body (Teflon), (h) upper cell body (Teflon). This cell is normally used inside a glove box and is optically accessed with fiber optic waveguides. [From E. H. Ward and C. L. Hussey, Anal. Chem. 59 213 (1987), with permission.]...

D. Check-Out and Troubleshooting. Even though an experiment may be well conceived and the equipment properly designed, it is usually necessary to remove small defects in workmanship from a newly constructed or altered apparatus. Therefore, the experimentalist must be prepared to check for faults whenever a change has been made. For example, it is necessary to carefully check a new vacuum apparatus or glove box for leaks. 

Fig. 2.6. Schematic representation of a dry-box purification scheme. (A) Glove box (B) tank argon (C) purge line for pump container (D) gastight pump container (E), 2.7 ft /min graphite ring pump (F) bubbler (G) purification train consisting of Linde 13X and 4A Molecular Sieves, and Vermiculite-supported MnO at room temperature (see Chapter 3). In some installations an additional drying column follows the MnO column. Approximate column dimensions are 3-in. diameter by 4-ft length. (Unpublished design of T. L. Brown.)...

When a new glove box is being designed or an old one modified, the glove ports should be positioned to provide access to the entire bottom of the box and... 

FIGURE 9.15 Design of a SI separation system for on-line separation of actinides for ICP-MS detection, where the SI system handles clean solutions and reagents outside the radioactivity containment glove box, while the injection valve and separation column downstream handle radioactive solutions. 

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