An analytical solution for acoustic flaw triangulation on thin spherical shells has been prepared. A FORTRAN program is provided which takes as input the differences in the arrival times of acoustic energy at the transducers and evaluates the spherical coordinates of the flaw. Only three experimental time differences need be measured. For this measurement, four transducers are required. One transducer is placed at (R, 0, 0) in spherical coordinates; the other three are spaced 90 degrees apart around the equator.

A nominal 15-pound batch of FEFO plasticized AFNOL was in preparation. Both the first and second esterifications were completed. (An equipment malfunction resulted in a loss of the product and the reaction vessel). The paper describes the preparation procedures and the malfunction.

Five batches of unplasticized AFNOL, each approximately one pound, were synthesized using 4,4-dinitropimelic acid as the starting material. Two 10 g batches were completed prior to the pound batches to assure the usability of the acid chloride. Characterization of each of the larger batches was by differential thermal analysis (DTA), infrared spectrophotometry (IR), and cure tests. Some characterization was also done on the commercial chemicals used in the synthesis.

A new method was developed for chlorination of 4,4-dinitropimelic acid with PCl{sub 5} using a Soxhlet extraction apparatus as the addition vessel. Acid used was that reclaimed from the purification of the crude acid chloride of 4,4-dinitropimelic acid supplied by LRL. Synthesis of FEFO plasticized AFNOL has been scaled up to a nominal 30-pound batch. Small batches and cure tests were run prior to the scaleup. Cure rate of the AFNOL system was followed by infrared spectrophotometry. The temperature range of 40-100 C was studied using the hot stage attachment to the infrared spectrophotometer.

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This report talks about Armco 22-13-5: development of standard practices for 17 1/2'' octagon.

The power input to the air drive line, input to the air chamber, input to the pumping diaphragm and output from the Kwan-Gett artificial heart has been measured at different atrial pressures with a constant frequency of 120 beats per minute and constant mean arterial pressure of 100 mm Hg. These measurements were made in vitro. The various efficiencies, cardiac outputs and pressures corresponding to the power measurements were also determined. (auth)

In general, the distance-time history of a shock front moving through a transparent medium is obtained by the aquarium technique. Differentiation of the distance-time curve yields shock velocity information, and given the Hugoniot of the transparent medium, a pressure-time history may be calculated. Distilled water typically comprises the transparent medium for the aquarium technique, hence, desirable properties of the fluid to be selected were patterned after those of water. The aquarium technique has been extended to encompass the temperature range from {minus}45 to +165 F by selection and calibration of a dimethyl polysiloxane fluid suitable for the referenced range. Results are given for the Hugoniots, and techniques used in selection and calibration are discussed.

The usefulness of the aquarium technique has been extended from {minus}65 F to +165 F by calibration of a fluid at four temperatures, {minus}65 F, {minus}45 F, room temperature and +165 F. Linear least square curves were derived from (U{sub s}, U{sub p})-data for each temperature. Listed Hugoniots are defined by equal slopes with intercepts at the longitudinal speed of sound for respective temperatures.

This report contains discusses of the following topics on Californium-252: First sales of californium-252; encapsulation services discussed; three new participants in market evaluation program; summer training programs to use californium; Californium-252 shipping casks available; Californium-252 questions and answers, radiotherapy; neutron radiography; natural resources exploration; nuclear safeguards; process control; dosimetry; neutron radiography; neutron shielding; and nuclear safeguards.

A progress report is given on the study of the compatibility of XTX 8003 and tetryl. The 100 C coupon test samples were discarded after 8 weeks because of excessive decomposition. There is no indication of a compatibility problem of XTX with tetryl as long as they are in a solid phase. The 80 C coupon test evaluations are continuing.

A final report is given on the study of the compatibility of Extex and tetryl. The 100 C coupon test samples were discarded after 8 weeks because of excessive decomposition. The 80 C coupon test evaluations have been completed and an analysis of the data made. There is no indication of a compatibility problem of Extex with tetryl as long as they are in a solid phase.

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The behavior of several selected HE and HE-component materials in aqueous media in contact with 6061 aluminum has been studied via conductance, cathodic tendencies (cell EMF measurements), pH, and visual analysis (photomicrographs) of the 6061 electrodes and media contacts rods. Addition of orthophthalic acid (OPA) to the media was also made to study potential corrosive effects possibly due to some breakdown of the polyphthalate systems in contact with these materials. Overall assessment of data is not made at this time due to the interrelationship of these data with data which should be obtained from unfinished portions of the study.

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The detonation electric effect has been used for the purpose of measuring the change in transit time through the temperature range of {minus}45 to +165 F, in the MC-2453 driver subassembly. Ionization switches were applied to an additional sample of subassemblies in order to compare the transit time as measured by the detonation of electric effect and the ionization switches. Results of these tests are included in this report.

The detonation electric effect has been used to measure transit times of the MC-2453 driver subassemblies at 185 F, 212 F and room temperature after the units were subjected to a temperature of 232 F. The test procedure and the results are included in this report.

The final HE test for the fiscal year was conducted in the 4-foot detonation sphere in May. A 200 g charge of 2-4-6 trinitrotoluene (1 1/2-inch diameter x 4 1/2-inch long) was initiated. On initiation, the TNT charge failed to detonate but instead partial deflagration of the HE took place. The ensuing pressure rise (54 torr vs. {approximately} 120 torr expected) implied a partial detonation; nevertheless, sampling and evaluation at the detonation products was continued. After removal of the products, the sphere was opened for inspection. The interior of the sphere was covered with a heavy carbon deposit adhering to a viscous film. Closer observation revealed granules of TNT embedded in the residual layer and also smeared on the surfaces of the involved hardware. Scrubbing with soap and water had no effect on the film; consequently, all the contamination was removed with acetone. Of the related hardware, only the copper cylinder suffered any damage. The cylinder was not fragmented; however, the internal diameter (1 1/2-inch) was found to have been enlarged by {le} 0.450 inch. The partitioned stainless steel tube suffered no distortion although the sections were propelled against the sphere wall. The data obtained for this test along with …

The solid-liquid phase diagrams of various binary mixtures of FEFO, BDNPA, EDNP and BDNPF are being studied. Temperatures at which a 0.025-inch probe penetrated the samples were measured. It appears that the samples had not crystallized but solidified into a glass.

This report presents the details of the activities of Douglas United Nuclear at the Hanford site during the month of August 1971.

An electro-optical system assembled for studies of self-luminous events is described. The system, primarily designed to support LLL and SLA investigations of flyer and exploding wire assemblies, provides time-correlated optical and electrical observations over the functional life of the two self-luminous assemblies.

The installation of a new electromagnet to be used with the stress and velocity gages is discussed. The results obtained from a new gage designed to eliminate the anomalous signals reported last quarter are given. Using this gage, a comparison of the waveforms from the XMC 2361 driver and the MC 2453 driver subassembly was made; the difference between the two, as determined by the velocity gage, is negligible. Also reported are the results of an unsuccessful attempt to use the velocity gage to pick up a timing signal from the XMC 2361 flyer plate.

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