None

This code finds inelastic cross-section matrix elements (transfer matrix) for hot monatomic moderator for multigroup calculations by numeric- analytic double integration of Cohen's formula. Several approximations to the actual neutron density ean be used as weight functions over the velocities of the initial groups. Modified and supplemented results are presented on binary cards and/or tape for direct input into the Argonne Transport Theory Codes or the SNG Code, or for offline output. (auth)

Abstract: "An experimental study was made to determine the effective shielding provided by a modern reinforced-concrete office building (AEC Headquarters building) from nuclear fallout. Pocket ionization chambers were used for measurement of the radiation-field strength. Fallout was simulated with distributed and point-source configurations of Co-60 and Ir-192 sources. Four typical sections were selected for study, and experiments were performed on each. These included an external wing with exposed basement walls and an external wing with a buried basement. Roof studies were made on an internal wing with a full basement and on the east end of wing A, which has a thin-roof construction. The thick-roof construction of 8 in. of concrete and 2 in. of rigid insulation covers all the building except the east end of wing A, which has 4 in. of concrete and 2 in. of insulation."

An experimental study was made to determine the effective shielding provided by a modern reinforced-concrete office building (AEC Headquarters building) from nuclear fall-out. Pocket ionization chambers were used for measurement of the radiation-field strength. Fall-out was simulated with distributed and point-source configurations of Co/sup 60/ and Ir/sup 192/ sources. Four typical sections were selected for study, and experiments were performed on each. These included an external wing with exposed basement walls and an external wing with a buried basement. Roof studies were made on an internal wing with a full basement and on the east end of wing A, which has a thin-roof construction. The thick-roof construction of 8 in. of concrete and 2 in. of rigid insulation covers all the building except the east end of wing A, which has 4 in. of concrete and 2 in. of insulation. (auth)

Batch processes on a scale of 250 to 300 g of uranium were developed for the production of uranyl oxinate (8quinolinate) and uranyl malonate. Both compounds are insoluble in water and were found to be suitably soluble in pitch. Uranyl oxinate was prepared by the reaction of an aqueous uranyl nitrate solution with an acetic acid solution of oxine (8-quinolirol) at about 80 deg C. Complete precipitation was accomplished by the addition of ammonium hydroxide. Yields of better than 99.5% were obtained. Uranyl malonate was prepared by the reaction of aqueous solutions of sodium malonate and uranyl nitrate at about 80 deg C in 97 to 98% yield. Uranyl 2-ethylhexanoate was prepared by a transesterification reaction from uranyl acetate and 2-ethylhexanoic acid. Yields of 90% were obtained but the process was quite laborious ard time consuming. A metathesis method of preparation was not successful. (auth)

Ultrasonic and eddy current methods were used to inspect EBR-I Mark III fuel elements and componentsUltrasonic techniques were used to inspect for homogeneity of the casting, bonding of the core to the clad on the extruded rod, bonding of the Zircaloy spacer disk to the uranium, and cracks in the Zircaloy rod used for end caps. Eddy current techniques were used to measure the cladding thickness on the extruded rods and to inspect the zirconium wire used for spacers on the completed fuel element. (auth)

An attempt is made to present available information pentinent to reactor containment. This is done directly, by summary and reference, or by reference alone. To provide a reference framework, the first review document must necessarily be handled differently from supplemental periodic reviews. The plan is to: (3) provide a detailed account of the problem and suggestions for work needed to yield adequate solutions; (2) present the accumulated knowledge and accomplishments; (3) give an account of experience in applying the containment concept; and (4) append extensive bibliographical material. An attempt is made in each case to indicate the significance of the information and its relation to the problems outlined. (A.C.)

In HAPO solvent extraction processes there are two independent aspects of nitrous acid chemistry. One concern the decomposition of the solvent through nitration reactions and the attendant problems. These reactions are autocatalytic in the presence of nitric acid and have threshold values for both temperature and nitric acid concentration for a given solvent below which nitrous acid disappears and above which it is generated with continuous destruction of the solvent. These reactions are identical to those found in the prior study of the hexone system.

please delete the no. 17076<><DSN>13:017077<ABS>The P/sub 1/ multigroup code was written for the IBM-704 in order to determine the accuracy of the few- group diffusion scheme with various imposed conditions and also to provide an alternate computational method when this scheme fails to be sufficiently accurate. The code solves for the spatially dependent multigroup flux, taking into account such nuclear phenomena is slowing down of neutrons resulting from elastic and inelastic scattering, the removal of neutrons resulting from epithermal capture and fission resonances, and the regeneration of fist neutrons resulting from fissioning which may occur in any of as many as 80 fast multigroups or in the one thermal group. The code will accept as input a physical description of the reactor (that is: slab, cylindrical, or spherical geometry, number of points and regions, composition description group dependent boundary condition, transverse buckling, and mesh sizes) and a prepared library of nuclear properties of all the isotopes in each composition. The code will produce as output multigroup fluxes, currents, and isotopic slowing-down densities, in addition to pointwise and regionwise few-group macroscopic cross sections. (auth)

The results of small exploding-wire studies were found to be capable of direct extrapolation to larger wires (an increase in cross-sectional area of 1500 to 1500 from the small wires). Copper wires up to 40 mils in diameter and iron wires to 62 mils in diameter were studied for use as fuses. in lengths up to 18 in. A dependency between pause time (the time between system current cut-off and current restrike) and wire length is described for several sizes of copper wires exploded with 16.5- and 49.5-kilojoule sources. The role of wire confinement is discussed in connection with establishment of the pause. (auth)

A method is presented for numerically determining local minima of differentiable functions of several variables. In the proeess of locating each minimum, a matrix is determined which characterizes the behavior of the function about the minimum. For a region in which thc function depends quadratically on the variables, no more than N iterations are required, where N is the number of variables. By suitable choice of starting values and without modification of the procedure, linear constraints can be imposed upon the variables. (auth)

Animals placed in open underground shelters at the Nevada Test Site during an atomic weapon test suffered skin burns of an unknown origin. From a study of the burns it was concluded that the causative agent entered the shelter from outside. the causative agent was subject to rectilinear propagation near the entrance. and the causative agent required a relatively unobstructed opening to effect entrance. The two most likely agents for such burns are hot winds and/or hot wind-borne dust that are forced into the shelter as the shock front from the weapon passes the shelter entrances and radiant energy from the fireball that is scattered into the shelter. A study was made to evaluate the contribution made by radiant energy and, if this contributioo proved to be significant, to suggest means of eliminating it. Extensive measurements were made in the laboratory on a scale model of the shelter and direct measurements were made on an actual shelter to ensure the validity of the laboraiory results. A Photronic cell and a MacBeth Illuminometer were used to measure the entryway transmission of total radiant energy. The consistency of the results with extended and point sources for the model shelter and the agreement …

5 8 5 of 15% cold-worked Zircaloy-2 as material for process tubes for the NPR has indicated the need for study of the creep properties at elevated temperatures. Single crystals of high-purity Mo are being tify factors affecting irradiation-induced volume changes in graphite by means of sink-float density measurements was continued. The simulation of conditions after lossof- coolant incident in the PRTR by means of a digital computer was continued. The study of the radiometric analysis of Mg was resumed. The program on radiationinduced graft polymerization ss continuing with emphasis on the investigation of factors influencing the formation of free-radical and peroxy grafting sites. A study of the effect of gamma radiation on nitration reactions in the HNO/sub 3/ -cyclohexane system is reported. The manner in which U metal solidifies in cylindrical graphite molds is being studied. A study to determine the feasibility of coating Ni and Ni alloys with Ca by the arcspraying method is presented. A project to investigate the effects of Y/sub 2/O/sub 3/, La/sub 2/O/ sub 3/, and CaO additions to UO/sub 2/ with regard to stabilizing the UO/sub 2/ fluorite structure under both oxidizing and reducing conditions is presented. An evaluation is being made of …

Presented at the Hearings on Fallout before the Joint Committee on Atomic Energy, May 5-8. 1959. About one megaton of energy from fission has been released at the Nevada Test Site from nuclear test detonations. The total tesultant fission product activity, if measured at one hour after formation, would have been about 400 to 600 billion curies. There was nothing that could be done to lessen the production of radioactive isotopes from a fission reaction thus the utmost care and skill were required ia the conduct of the tests to minimize the deppsition of the activity outside the Test Site. A summary of the data on fall-out from nuclear detonations at the Nevada Test Site is presented. (auth)

The positional tolerance method of dimensioning is described. The emphasis is placed on the elimination of ambiguities and increase in tolerances provided by this method as compared to the older, bilateral method. (auth)

None

In the course of the PWR Core 2 study program, studies to improve mixing in the lower plenum were carried out using a quarter-scale air-flow model. By use of vanes to form a strong vortex in the lower plenum, excellent lower-plenum mixing was obtained with only slight increase in pressure drop. For the studies relating to a 9-ft core design, the model core was extended downward 4 1/2 in. below the Core I position. The flow baffle used for this configuration extended below the four inlets, with the result that considerable pressure loss occurred in the lower plenum. It was found that mixing could be greatly improved by use of deflectors to divert the inlet flow in a tangential direction. Data on lower- plenum mixing, core-flow distribution, thermal-shield-flow directions and velocities, flowbaffle orifice coefficients, and pressure losses were obtained for the 9-ft core configuration both with flow deflectors and without them. The flow deflectors greatly improved mixing at the expense of increased lowerplenum pressure loss. For the studies relating to a 7.5-ft core design, the core was extended downward 2 1/4 in. The flow baffle used for this core design extended to about the center line of the inlets, so …

BS>Results of a study of thermodynamic properties of aqueous hydrochloric acid solutions are presented. A hydrogen electrode was used against a silver-silver chloride electrode at 25 to 275 deg C using hydrogen pressure of about 1 atm. and hydrochloric acid concentrations of 0.005 to 1.0 M. Electromotive measurement techniques are described and resulting data are tabulated. (J.R.D.)

The final specifications for equipment for the ALPR were prepared from original bid specifications, proposals submitted on equipment purchased, and purchase orders. Each specification includes data pertaining to the equipment purchased, revisions made during the shop fabrication, reference drawing lists vendor's name, and purchase order numbers. (A.C.)

Some of thc basic considerations in the design of the protective interlocking of the d-c power system for auxiliary magnets used at the Bevatron are described. The required current-regulation tolerarices are given along with a discussion of the various problems associated with certain special applications of the magnets. (auth)

Presented at Inst. of Environmental Engineers STAMeeting!, Chicago, April 1959. A brief discussion is presented of the progress over the last seven years of the environmental laboratory at Sandia Corporation. (W.L.H.)

None

GEORGE is an automatic high-speed electronic digital computer designed and constructed by ANL. Operating features of GEORGE are described, and a practical set of instructions is given that will enable a prospective user to construct codes, operate the machine and its auxiliary equipment, use the basic routines available in the routine library, and decide whether a particular problem is suitable on the basis of capacity, speeds and auxiliary equipment. (W.D.M.)

The batch fluid-bed hydrofluorination of yttrium oxide to yttrium fluoride of low residual oxygen content was studied in a 3-inch Monel column. Bed temperature, hydrofluorination time, and hydrofluoric acid excess were studied, and the contamination due to equipment corrosion was determined. A sample of the fluoride was converted to metal and analyzed for impurities. A brief investigation of the reaction kinetics was also made on the thermobalance. (auth)