The Lawrence Livermore Laboratory is currently involved in a 1/5 scale testing program on the Mark I BWR pressure suppression system. A key element of the test setup is a pressure vessel that is a 90/sup 0/ sector of a torus. Proper performance of the 90/sup 0/ torus depends on its structural integrity and structural dynamic characteristics. It must sustain the internal pressurization of the planned tests, and its dynamic response to the transient test loads should be minimal. If the structural vibrations are too great, interpretation of important load cell and pressure transducer data will be difficult. The purpose of the report is to bring together under one cover calculations pertaining to the structural dynamic characteristics and structural integrity of 90/sup 0/ torus. The report is divided into the following sections: (1) system description in which the torus and associated hardware are briefly described; (2) structural dynamics in which calculations of natural frequency and dynamic response are presented; and (3) structural integrity in which stress calculations for design purposes are presented; and an appendix which contains an LLL internal report comparing the expected load cell response for a three and four-point supported torus.

Concepts were evaluated for the storage of unreprocessed spent fuel in a retrievable surface storage facility. This document provides a systematic format for making a concept selection from the seven alternative concepts presented in RHO-LD-2. Results of the evaluation was that the Drywell concept was rated highest with the Water Basin Concept and the Sealed Storage Cask concept with multiple canisters of SURF coming in a close second and third. (DLC)

A proposed experiment for the study of neutrino interactions in deuterium is described. It is proposed to take 10/sup 6/ pictures of such events. Other research in this area is also described. (JFP)

This report details the status of the testers which provide the testing support of timers, actuators, detonators, firing sets, transducers, isolators, and pyrospacers during the time period of October through December 1978.

A group of high-pressure systems that measure physicochemical properties of various media up to 2000/sup 0/C and 30 GPa is described. With these systems it is possible to determine complete stress-strain behavior, ultrasonic velocities, permeability, phase studies, fracture-flow behavior, and optical and electrical properties. The apparatus is described in terms of published results, photographs, and schematic diagrams. 63 references.

The ultrafiltration (UF) pilot system is being evaluated at Mound Facility. The effect of pressure drop, temperature, and pH of the feed on system performance has been studied. The system has been run through a number of cleaning cycles including tap water flush, enzyme soak, detergent wash, and citric acid/oxalic acid wash. A continuous run was started on waste from the Waste Processing Facility; about 11,500 gal has been processed. Studies to determine the effect of (..cap alpha.., ..beta.., and ..gamma..) radiation on membrane characteristics were initiated. The small laboratory column tests were completed. Isotherms were run on several inorganic adsorbents, including titanium phosphate and sodium titanate. Tests were continued on the Engineering Test Ion Exchange System. Waste solution from the Waste Processing Facility spiked with plutonium-238 and ultrafiltration product spiked with uranium-233 were used as feeds. 6 tables, 1 figure.

Transient high speed gas flow up a gravel stemming column was investigated. The results provide an upper bound to the extent of gas pressure propagation in the first several seconds following an underground nuclear test. Application of these results to the LASL BANDICOOT event demonstrate that gas flow through the gravel column cannot explain that vent.

An overall view is given of progress and plans for pressing forward with mirror research at Livermore. No detail is given on any one subject, and many interesting investigations being carried out at University laboratories in the U.S. that augment and support efforts at Livermore are omitted.

Three options are presented for automating the chemistry laboratories at the Surveillance and Analysis Division, Environmental Protection Agency , at Edison, New Jersey. The laboratory served New York State, New Jersey and Puerto Rico. Each option was found to be cost-effective. For two of the systems, existing EPA laboratory software would be used without (option 1) and with (option 2) data management. For the third system, laboratory and data functions would be implemented on a different computer (PDP-11) from those now installed. Option 2, the most favorable system, would make use of existing programs and data-management features now being developed; it would break even in 1.82 y and accumulate $373,928 in the five years after installation.

Information on LMFBR type reactor high temperature piping is presented concerning failures of high temperature sodium piping systems and creep-fatigue testing of 2/sup 1///sub 4/ Cr--Mo steel.