Thermogravimetric analysis on cesium aluminosilicates was performed. Pollucite, CsAlSi/sub 2/O/sub 6/, appears to have more than adequate thermal stability for Cs fixation in supercalcine. The possibility of leaving Ru as RuO/sub 2/ during supercalcine crystallization is being assessed. The apatite solid solution (A/sub ss/) phases used in supercalcine phase formation models have been easily prepared as pure phases. Use of Ca instead of Sr as an alkaline earth additive yields a more stable A/sub ss/ phase. Weight ratios have been optimized for two firing temperatures in terms of soxhlet leachability. However, this is not the preferred approach to supercalcine consolidation. The phase formation models developed for PW-4b-type wastes were routinely applied to PW-7, in spite of several significant composition differences in the latter. Uranium oxide remains as a fluorite structure oxide after supercalcine crystallization, but it does seem to have incorporated either or both CeO/sub 2/ or ZrO/sub 2/. Characterization of this F/sub ss/ phase will require further study. Based on observations during several complex compatibility studies, it appears that good overall thermal stability at as high as 1200/sup 0/C might be attainable for nepheline based supercalcine formulations. A thorough literature review of the oxide crystal chemistry of Te has …

Data were obtained for the surface heat transfer coefficient of uranium and the alloys of uranium-0.75 wt percent titanium, uranium-6 wt percent niobium, and uranium-7.5 wt percent niobium-2.5 wt percent zirconium. Samples were heated to 850/sup 0/C in both a molten salt bath and an argon-purged air furnace, then the samples were cooled in air. Surface heat transfer coefficients were calculated from the experimental data for both heating and cooling of the metals. 4 fig, 4 tables.

The status of the effort to apply MULTI-FOIL thermal insulation in an effective manner to the Ground Development System (GDS) is reviewed. Heat loss measurements made on cylindrical and elbow heat sources using ''Tape'' and ''Conventional'' MULTI-FOIL indicate that the thermal losses are comparable on a per layer basis. However, use of the tape incurs a weight penalty, per layer, of about 20 percent. The effective thermal emissivity of the nickel layer/zirconia powder MULTI-FOIL is approximately 0.32. Parametric studies of GDS insulation losses (using a computer program developed for this purpose) indicate: (1) that the Heat Source Assembly (HSA) heat losses are a major fraction of the total and (2) that a significant reduction in heat loss is possible by optimizing the distribution of foil layers. A meltdown test of a miniature HSA configuration suggests that additional MULTI-FOIL layers can be safety added to the HSA insulation. Test data indicate that ''Electroformed'' MULTI-FOIL insulation assemblies (as a consequence of decreased edge loss and lower foil emissivity) are approximately four times as effective as either ''Conventional'' or ''Tape'' MULTI-FOIL packages on a weight basis. Preliminary GDS insulation design and planning have been completed.

The Safety Analysis Report for Packaging demonstrates that the neutron shipping cask can safely transport, in solid or powder form, all isotopes of uranium, plutonium, americium, curium, berkelium, californium, einsteinium, and fermium. The shipping cask and its contents are described. It also evaluates transport conditions, structural parameters (e.g., load resistance, pressure and impact effects, lifting and tiedown devices), and shielding. Finally, it discusses compliance with Chapter 0529 of the Energy Research and Development Administration Manual.

A summary of current activities in applied and computational mathematics at the Lawrence Livermore Laboratory is given. It is evident from the survey that there is a very broad spectrum of research and development in this area of mathematics. However, only a small percentage of the total effort is directly involved with fundamental research. The Laboratory is advised to adopt a formal policy to establish and support a research program in applied and computational mathematics. Coordination of related efforts is needed, and steps toward this are recommended. In addition, a study of interactions between mathematical methods and computer architectures is necessary for the Laboratory's ever-increasing requirement for computational capability. 5 figures, 3 tables.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

This program was written to be used as a subroutine. The program determines the thermodynamic properties of water given any of the following pairs of knowns to define a thermodynamic state: pressure and entropy, pressure and enthalpy, pressure and quality, temperature and pressure, or temperature and quality. These five pairs of knowns allow the user to evaluate any thermodynamic cycle using water, as a working fluid. The basic equations came from Keenan, Keyes, Hill and Moore, Steam Tables, John Wiley and Sons, 1969. This report includes a complete derivation of equations, program listing, program symbol description, a complete set of flow charts and a sample steam turbine calculation.

In differential pumping, the pumping speed has in the past been controlled by the size of the orifice between the vacuum chamber and the diffusion pump. This fixed orifice is usually in the valve gate of a high-vacuum valve (or in a baffle plate). To change the pumping speed, then, the valve must be removed and another valve with an orifice of a different size must be inserted. This process is time consuming and risks contamination of the system, which would require another pumpdown and bakeout. A simple shutter that controls pumping speed without requiring any change in components has been developed. The shutter consists of 20 leaves arranged as an iris that opens to a 6-in.-dia orifice or closes to 0.25 in. The shutter consists of a mounting ring, the leaves, a drive ring, and a drive gear. Each leaf is stainless steel with a pivot pin at one end and an offset pin at the other. The leaves are placed in the mounting ring and the drive ring and the drive gear are attached. Rotating the drive gear moves the leaves and changes the orifice size. One of the shutters has been used successfully with a 4-in. diffusion …

A cursory review of literature dealing with various separatory processes involved in the handling of high-level liquid nuclear waste discloses that, for the most part, discussion centers on separation procedures and methodology for handling the resulting fractions, particularly the actinide wastes. There appears to be relatively little discussion on the incentives or motivations for performing these separations in the first place. Discussion is often limited to the assumption that we must separate out ''long-term'' from our ''short-term'' management problems. This paper deals with that assumption and devotes primary attention to the question of ''why partition waste'' rather than the question of ''how to partition waste'' or ''what to do with the segregated waste.''