The Effluent Treatment Facility (ETF) criticality review identifies two potential scenarios for criticality: (1) An instantaneous release of a significant quantity of fissile material from a process upset; and (2) A gradual accumulation of fissile material in process vessels. The potential for an instantaneous release from 211-H will be eliminated by the installation of a nuclear safety blank as recommended in the criticality review. With the nuclear safety blank installed, the only mechanism for introducing a gradual accumulation of uranium to the ETF from 211-H will be via Acid Recovery Unit (ARU) and General Purpose (GP) evaporator overheads. This study has determined that the maximum credible annual release of uranium-235 to the ETF from these sources is 106 grams.

This paper describes computer-aided design codes for particle accelerators. Among the topics discussed are: input beam description; parameters and algebraic expressions; the physical elements; beam lines; operations; and third-order transfer matrix. (LSP)

UCO kernel fabrication was previously demonstrated at 2 kg per batch. The limiting factors were the size of the sintering furnace and the UCO drop columns. The former UCO drop columns also showed considerable variability in the quality of gelled microspheres. A larger-size sintering furnace and a set of drop columns with an improved design were installed in 1987. The new set of drop columns and sintering furnace, in conjunction with other modular-sized equipment, were designed to produce the reference batch size of 5.5 kg of UCO kernels containing 5 kg of heavy metal (HM). The new equipment was utilized in the manufacture of several 2 kg batches of UCO kernels and ran well. In the process development reported here, the batch size was scaled-up to 5.5 kg. While the equipment is performing as expected, some of the process parameters still need to be optimized. In the body of this document is a description of the process to make UCO kernels via Gel Supported Precipitation (GSP) technology and the critical parameters that were changed to scale-up the kernel batch size to 5.5 kg, while meeting product specifications.

The physics and engineering guidelines for the ITER device are shown to lead to viable and attractive operating points for a steady state tokamak power reactor. Non-inductive current drive is provided in steady state by high energy neutral beam injection in the plasma core, lower hybrid slow waves in the outer regions of the plasma and bootstrap current. Plasma gain Q (/equivalent to/fusion power/input power) in excess of 20 and average neutron wall loading, <GAMMA> approx. 2.0 MW/m/sup 2/ are predicted in a device with major radius, R/sub 0/ = 7.5 m and minor radius, a = 2.8 m. 15 refs., 3 figs., 3 tabs.

F-Canyon continues to obtain good chloride removal from Rocky Flats Alloy solution during head end treatment. One single batch of solution from the thirteenth alloy campaign, dissolved earlier this month, has been successfully processed. This was the first campaign to combine Rocky Flats Scrub Alloy (RFSA) with Rocky Flats Anode Heel Alloy (RFAHA) in the same dissolution solution (TA-2-1183). Following dissolution in Tank 6.4D, chloride was precipitated with mercurous ion added as the nitrate. The precipitate, Hg{sub 2}Cl{sub 2}, was concurrently removed with the gelatin floc via centrifugation. For this batch, a set of duplicate samples was initially obtained from Tank 11.2. However, due to repeated acid and density measurements by Laboratories, the volume of sample remaining was insufficient to permit chloride analysis. Samples of the same solution, now transferred to Tank 13.3, were analyzed. During the transfer, a 2% dilution occurred, but this error is not significant due to the larger error in the chloride analysis. For the single batch of RFSA-RFAHA material processed from the thirteenth campaign, the head end product contained 52 ppm ({micro}g/mL) chloride, a DF of 22. Relative standard deviation of the measurement was {+-}6 ppm (n = 4) for a precision of {+-}12%.

Monthly report providing tabular statistical information about motor vehicle accidents in rural areas of Texas during 1988, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.

Monthly report providing tabular statistical information about motor vehicle accidents in Texas during 1988, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.

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.