Further results are presented from the large, homogeneous assembly ZPPR-18 in the JUPITER-III program. Reaction rate results are given for ZPPR-18B along with measured gamma ray dose results from ZPPR-18A and 18B. Control rod worth results from the ZPPR-18 assemblies are included. Calculation models, measured and calculated k-effective values and measured sodium worth values, are presented for the ZPPR-19 assemblies of the lo program.

A test model of the flexible foot support was constructed early in the design stages to check its reactions to applied loads. The prototype was made of SS 304 and contained four vertical plates as opposed to the fourteen Inconel 718 plates which comprise the actual structure. Due to the fact that the prototype was built before the design of the support was finalized, the plate dimensions are different from those of the actual proposed design (i.e. model plate thickness is approximately one-half that of the actual plates). See DWG. 3740.210-MC-222376 for assembly details of the test model and DWG. 3740.210-MB-222377 for plate dimensions. This stanchion will be required to not only support the load of the inner vessel of the cryostat and its contents, but it must also allow for the movement of the vessel due to thermal contraction. Assuming that each vertical plate acts as a column, then the following formula from the Manual of Steel Construction (American Institute of Steel Construction, Inc., Eigth edition, 1980) can be applied to determine whether or not such columns undergoing simultaneous axial compression and transverse loading are considered safe for the given loading. The first term is representative of the axially …

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The new flash x-ray facility constructed at Site 300 of the Lawrence Livermore National Laboratory has a nominal operating electron energy of 20 MeV. The bremsstrahlung photons from this accelerator will be used for a variety of radiographic investigations of both thick and thin objects under explosively driven conditions. In order to properly design and interpret experiments, it is very useful to have a Monte-Carlo code to simulate the coupled electron-photon processes that occur both in the creation of the bremsstrahlung as well as in the collimation, the materials being radiographed and the detection system. One such code suitable for this purpose in many experimental situations is the SANDYL code, which has been used at this laboratory since 1974. This brief report is written to point out that if one uses the code's default values for some of the parameters involving the electron substep size, the code-predicted bremsstrahlung is higher than experimental data by about 60. This report also shows that as this parameter is made finer, the code prediction approaches the experimental results to within about 10. This report compares the published data of O'Dell et al for bremsstrahlung at 20.9 MeV with our SANDYL calculations. O'Dell et al …

Three different uranium oxide samples have been characterized with respect to the different preparation techniques. Results show that the water reaction with uranium metal occurs cyclically forming laminar layers of oxide which spall off due to the strain at the oxide/metal interface. Single laminae are released if liquid water is present due to the prizing penetration at the reaction zone. The rate of reaction of water with uranium is directly proportional to the amount of adsorbed water on the oxide product. Rapid transport is effected through the open hydrous oxide product. Dehydration of the hydrous oxide irreversibly forms a more inert oxide which cannot be rehydrated to the degree that prevails in the original hydrous product of uranium oxidation with water. 27 figures.

The essential objective of Phase I of our program is to demonstrate extended capabilities for the Linear Pocket Feeder (LPF). This requires extensive modification of both our test facility and the LPF. At this time we estimate that delays in modifications will prevent our testing the LPF until at least mid-May, a month and a half later than originally scheduled. However, we have reviewed our test plan and facility operation in detail and conclude that testing can probably be completed by the end of August as originally proposed, and that the program is not jeopardized in any other way. In fact, our projected delay in specified testing is due in part to our initial testing - crude but successful, with pulverized coal (PC). On the strength of this success, we are attempting to go immediately to an LPF and feed system that is fully modified for PC. A status report task by task is given.

This study was performed to assess the feasibility of producing fuel ethanol from sugar beets. Sugar beets are a major agricultural crop in the area and the beet sugar industry is a major employer. There have been some indications that increasing competition from imported sugar and fructose sugar produced from corn may lead to lower average sugar prices than have prevailed in the past. Fuel ethanol might provide an attractive alternative market for beets and ethanol production would continue to provide an industrial base for labor. Ethanol production from beets would utilize much of the same field and plant equipment as is now used for sugar. It is logical to examine the modification of an existing sugar plant from producing sugar to ethanol. The decision was made to use Great Western Sugar Company's plant at Mitchell as the example plant. This plant was selected primarily on the basis of its independence from other plants and the availability of relatively nearby beet acreage. The potential feedstocks assessed included sugar beets, corn, hybrid beets, and potatoes. Markets were assessed for ethanol and fermentation by-products saleability. Investment and operating costs were determined for each prospective plant. Plants were evaluated using a discounted cash …