Reactor effects of failure of a safety rod to scram can be considered in two major respects: The reduction in total safety system strength which will affect the amount of ``prompt drop`` and subsequent flux decay rate of the average neutron flux-level; and the change in local flux distribution due to the absence of the particular rod which fails to enter the reactor. The purpose of this memorandum is to describe the physical effects involved and to indicate the approximate magnitude of both reactor-wide and localized changes in event of failure of a VSR simultaneous with a K Reactor riser accident.

The effect of ground motion due to nuclear excavation of a sea-level canal at two alternative routes, 17A and 25E, are discussed from the aspects of motion prediction and structural response. The importance of the high-rise building problem is stressed because of its complexity. Several damage criteria are summarized for advance planning of excavation and operation. The 1964 shot schedule and the latest revised schedule are included for comparison.

This report was prepared by Battelle-Northwest under Contract No. AT(45-1)-1830 for the Atomic·Energy Commission, Division of Reactor Development and Technology, to summarize technical progress made in the Fast Flux Test Facility Program during August 1969 .

This memo calls attention to the fact that the relationship between equilibrium temperature and the pressures in two phases of a material is {Delta}sdT = {Delta}(vdP) , and not, as now routinely assumed by bubble investigators, the Clausius-Clapeyron equation {Delta}sdT = {Delta}vdP . If one phase is discontinuous (subscript "d") and consists of spheres of radius r in a continuous phase (subscript "c") whose pressure is held constant, then the equilibrium temperature will be above the saturation temperature of the continuous phase by an amount ({Delta}T{sub sup}){sub c} = 2 {integral}{sub 0}{sup ({sigma}/r){sub e}}(v{sub d}/{delta}s)d({sigma}/r) and above the saturation temperature of the discontinuous phase by an amount ({Delta}T{sub sup}){sub d} = 2 {integral}{sub 0}{sup ({sigma}/r){sub e}}(v{sub c}/{delta}s)d({sigma}/r)

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This report itemizes the irradiations performed by Testing and Irradiation Services for Battelle-Northwest. It lists the materials being irradiated, awaiting disposition and material shipped during the report period. The data are given in table form. Information consists of: TISR No.; request number; target material; piece number; operating time; CMK absorbed; charge date; location; exposure to date-NVT; discharge, date and time; and shipping date.

Young chinook salmon held in live boxes were drifted through Hanford reactor discharges in the central Columbia River, with the objective of evaluating the affect of heated effluents on fish survival. No significant mortalities of fish were recorded from 12 drifts during the spring (March--April) when base river temperatures were low, ranging from 4 to 7.6 C. Some mortalities occurred, however, in 3 of 24 drifts conducted in late summer (August--September) when base river temperatures extended from 17 to 19.6 C. None of the mortalities resulted from passage through midstream discharge plumes, which were characterized by relatively moderate temperature increase and short duration of exposure to maximum temperatures. Mortalities occurred only when fish were drifted along the south bank of the river through areas receiving heated water via intragravel seepage from shoreline retention basins and experimental subsurface disposal of reactor effluents. The shoreline areas were characterized by impeded river flow, which restricted horizontal and vertical mixing and prolonged the exposure of drifted fish to excessively warm temperatures. The extent of thermal shock sufficient to cause death in the field is primarily an integrated function of temperature increase and exposure duration, as has been demonstrated in laboratory experiments. The numerous possible …

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The electrical conductivity of arc cast specimens of Ce1+yOx have been measured as a function of temperature and oxygen pressure. These preliminary results indicate that although the absolute value of the conductivity for arc cast Ce1+yO2 specimens differs from the sintered specimens the temperature and oxygen pressure behavior is similar. The electron mobility in Ce1+yO2 was calculated from the electrical conductivity and thermodynamic data and the assumption that the atomic defects exist predominantly in only one state of ionization. The data for the calculations in the temperature range 800° - 1200°C was selected from the oxygen pressure region where according to the analysis of the conductivity data the predominant defects are electrons localized on normal cerium ions and quadruply ionized cerium interstitials. The calculated electron mobilities of sintered and arc cast Ce1+yO2 specimens increase exponentially with increasing temperature between 800° and 1200°C. Based on the temperature dependence of the mobility, the electron conduction mechanism appears to be a hopping type process with an activation energy of 0.14eV. The magnitude of the mobility is of the order of 10-2 cm2/v-sec. A galvanic cell using a commercially made calcium stabilized zirconia tube was used to measure the PO2 of analyzed and premixed …

A series of field diffusion experiments conducted at Vandenberg Air Force Base, California are discussed. These tests were designed to provide the necessary data from which an empirical equation, derived by multiple regression analysis, has been developed. This equation is to be used as a range safety tool in support of missile activities on the Air Force Western Test Range at the Sudden Ranch Launch Complex, SLC-6. The field experiments utilized a fluorescent pigment, zinc sulfide, U. S. Radium Corporation designation No. 2210, as a tracer. Appro ximately 500 aspirated filters, located at 1. 5 m above the ground, were installed along concentric arcs at 500, 800 and 1000 m from the source, and along roadways at greater downwind distances. These samplers provided measurements of the downwind time-integrated distribution of the tracer. These data were supplemented by: ground and aerial air concentration sampling; and, meteorological data from several sites. Specific data are archived at the USAF Environmental Technical Applications Center.

We present data from a measurement of angular distributions of the reaction n + p {yields} {gamma} + d (1a) for neutrons with energies between 300 and 700 MeV. These data are compared with recent data for the inverse reaction {gamma} + d {yields} n + p (1b). Time-reversal invariance implies that apart from a normalization factor the angular distributions should be the same. We find an intriguing discrepancy in the vicinity of the well-known peak in the total cross section of reaction (1b) and apparent agreement elsewhere. The discrepancy occurs in the shape of the angular distributions and does not depend on the normalization of our data or those of the inverse reaction experiments.

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This document presents details about the activities of Douglas United Nuclear at the Hanford site during the month of August 1969.

This report presents details of the Hanford toll irradiation study. The objective of the study was to provide a basis for establishing charges for irradiation of neptunium for private parties on a toll basis.

This single page document is the September 15, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production Reactor.