From Introduction: "This Monograph, supplemented by ORNL-3207 [9], should eliminate completely the need for use of approximate formulas (e.g. those of Kotani and Ross [10]). The formulation of the problem has been summarized in sec. II. This is followed in sec. III by a discussion of the methods used in numerical calculations. Sec. IV contains a detailed explanation to facilitate the use of present tables."

The conclusions are: (1) The formation of powder or ``oxide`` in the storage container is caused almost entirely by packaging of plutonium in plastic materials. (2) The corrosion of the plutonium follows degradation of the plastic due to the intense radiation. (3) The powder, formed by this corrosion is not PuO{sub 2} but a mixture of oxides, hydrides, and chlorides in varying proportions, depending on the type and amount of plastic in the individual storage container. (4) The powder consists predominantly of hydrides. Hydrogen is considered the major cause of severe corrosion. The surface-disruptive nature of hydriding prevents formation of any protective film on the metal. Fresh surface is provided continuously for further attack. (5) The hydrides are pyrophoric. Spontaneous ignition of the powder and metal occurs occasionally, immediately following opening of the container. This effect may be more severe for ingots than for buttons because of unreacted- or only partially-reacted metal fines in the powder from ingots. (6) Metal loss of eight percent in 100 days of storage has been observed for unalloyed ingot metal of moderate purity under the storage conditions described in this report. Corrosion rate depends on purity of the metal. Impurities in unalloyed metal inhibit …

Reactor phase-out discharge planning involves forcing all tubes into a discharge pattern such that they can all be discharged at the appointed time with maximum fuel utilization. When considering reactors operating on the block discharge concept, action must be taken early to cause the fringe to reach goal exposure at the same times as the central core. For the case of alternate row or random discharge of core material, there is the additional problem of discharging all core tubes at a single outage without greatly underexposing or overexposing either of the discrete batches involved.

This report consists of three sections covering the three major areas of Lawrence Livermore Laboratory`s participation in Operation Crosscheck. These areas are: Diagnostic Aircraft; Radiochemical Sampling; and Device Assembly and Handling, Barbers Point. The information contained in these sections has been extracted from Crosscheck post-operation reports.

The United States Atomic Energy Commission authorized the production of 110 kg of U-233 by the irradiation of thorium oxide in the Hanford production reactors. This irradiation will be carried out by replacing the natural uranium fuel in all or a portion of the process tubes in several of the reactors with thorium oxide (thoria) and slightly enriched uranium. This reactor loading is referred to as an ``E-Q load.`` Reactor loadings are separated into two types which can be charged independently of each other: a mixed lattice in the central zone of the reactor in which enriched uranium (0.947 per cent uranium-235) and thoria are loaded in separate process tubes in uniform array with a fuel-to-target ratio of about 5.5--6.0 to 1 (core E-Q load), and a peripheral ring of thoria in the outermost process tubes of the reactor with the reactivity being supplied by enriched uranium (0.947 per cent uranium-235) in the process tubes in the immediately adjacent two lattice units (blanket E-Q load). This safety analysis is addressed to the core E-Q load; however, the specific fringe loading, with properly matched reactivity, has little effect on the basic physics and hydraulics of the reactor so the evaluation presented …

A fraction of the energy released by the underground detonation of nuclear explosives is locally deposited as residual thermal energy. An accurate prediction of this usable fraction of the energy released is necessary to evaluate the feasibility of several of the proposed projects in the Plowshare Program. This paper will present a summary of the available data on residual thermal energy from nuclear detonations in three different geological media: tuff, halite, and granodiorite.

The incentives, objectives, and previous test results of the hot-die- sizing program have been presented in recent documents. The test described in this report is one additional step in the evaluation of an alternate fuel fabrication process.

The increasing exponential function e-at [a > 0] characterizes such natural events as gas discharges, neutron multiplication, and the transistor avalanche phenomenon. This report describes an instrument for measuring the rate of rise, a, of an increasing electrical exponential signal.

This report provides an estimation of cost and manpower for construction of the Hanford Isotopes Production Plant.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Waggoner Carr, regarding a legal question submitted for clarification: Acquiring of jurisdiction by Corporation or Justice Court where complaint alleges simple assault but facts show aggravated assault under Section 9, Art. 1147, Vernon’s Penal Code.

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