Gamma-ray spectrometric methods using high-resolution Ge(Li) and high purity Ge detectors have been used to quantify the concentrations and external exposure rates of radionuclides in the soil. These in situ methods have been used to study radionuclide deposition around nuclear power stations, the distribution of radionuclides at the Nevada Test Site, biogeochemical cycling of radionuclides, and the fate and impact of fallout radionuclides. Portable gamma-ray spectrometer systems used for various kinds of in situ field measurements include: large-volume coaxial Ge(Li) detectors for terrestrial gamma-ray surveys at several sites including preoperational nuclear power plants and for real-time measurements of nuclear reactor plume isotopic exposure rates; and planar, high purity Ge detectors for mapping /sup 241/Am and /sup 239/Pu soil concentrations, particularly at the Nevada Test Site. These applications are discussed along with a brief description of the methodology and techniques associated with in situ gamma-ray spectrometry.

A numerical solution technique is presented for determining the dynamic response of a thin, elastic, circular, cylindrical shell of constant wall thickness and density, immersed in a potential fluid. The shell may be excited by an arbitrary radial forcing function with a specified time history and spatial distribution. In addition, a pressure history may be specified over a segment of the fluid outer boundary. Any of the natural shell end conditions may be prescribed. A numerical instability prevented direct solutions where the ratio of the hydrodynamic forces to shell inertial forces is greater than two. This instability is believed to be the result of the weak coupling between the equations describing the fluid to those describing the shell. To circumvent this instability, an effective mass was calculated and added to the shell. Comparison of numerical to experimental results are made using a /sup 1///sub 12/ scale model of a nuclear reactor core support barrel. Natural frequencies and modes are determined for this model in air, water, and oil. The computed frequencies compare to experimental results to within 15%. The use of this numerical technique is illustrated by comparing it to an analytical solution for shell beam modes and an uncertainty …

This report is on Emergency Preparedness and Disaster Assistance: Federal Organization and Programs.

Reported are: analytical R and D for the nuclear explosives program, analytical R and D for the energy programs, and special projects. (DLC)

A new method of injection into the AGS using a chopped H/sup -/ beam is proposed. Orbit control, control over the beam characteristics, and the implications for operating the rf system are considered.

Stress corrosion tests were conducted on 316 VIM/VAR stainless steel as part of the Tritium Facility's Quality Assurance Program. Initial results under severe conditions indicate earlier-than-expected failure. We are expanding our tests to further examine this problem.

The objective of this program is to determine the state-of-the-art and to develop some of the technology required to allow for large volume and low cost terrestrial solar panel production. The baseline production facility being studied would provide for production of 200 megawatts of solar panels per year from an input commodity as sawn Czochralski wafers. Initial analysis of available automation equipment applicable to the 1986 goals shows that most of the equipment will have to be of special design. The currently available equipment is designed for the semiconductor industry where process volumes are low. Maximum speeds are of the range of 100 to 200 wafers per hour. Using special equipment it appears feasible to produce the solar cells with 6 to 8 parallel production lines operating three shifts per day, seven days per week and to produce the encapsulated modules with 1 to 3 parallel production lines. Preliminary costs analyses show promise for reaching the 1986 price goals assuming a SAMICS wafer price of $0.28/wafer (1986 dollars). Initial work has been done to study the applicability of a plasma process to perform back etch of the cells. This area shows promise for eliminating wet chemical etching procedures with attendant …

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, John L. Hill, regarding a legal question submitted for clarification: Duty of clerks of court when called upon to file pleadings not certified as having been delivered or mailed to the adverse party or his attorneys.

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.