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Formulation facility. Quarterly report, April--June, 1969

Description: Two 250-pound batches of LX-09 were made for BAECP for special studies. Twenty Micronizer runs were made to ascertain the effects of various fluids and wetting gents upon the stability of high surface area PETN and to establish the limits within which repeatability can be expected. One sample, after being treated with the wetting agent dodecyl sodium sulfate, stabilized at 7,400 cm{sup 2}/gm after the 300-hour bake at 100 C. A study was begun to determine the effects of deaeration upon the rheological and firing properties of Extex. Rheological data indicate that deaeration has little effect on extrudability. Firing data are currently being obtained.
Date: December 31, 1969
Creator: Osborn, A.G.
Partner: UNT Libraries Government Documents Department

Explosive performance. Quarterly report, July--September, 1969

Description: This project is for experimentally determining the detonation pressure, etc., of explosives. The detonation pressure of several sizes of PBX 9404 charges was determined using the aquarium technique. Pressure data (from the larger shots) were generally in good agreement with the quoted values for PBX 9404 in these geometries. The small unconfined charge pressure values were consistently about 6% below the accepted 375 kbar value. Experimental shock velocity and computed pressure data are reported.
Date: December 31, 1969
Creator: Rigdon, J.K.
Partner: UNT Libraries Government Documents Department

Thermal properties and chemical reactivity. [Quarterly report], October--December 1969

Description: (Explosives are studied.) Impurities in FEFO and relatively pure FEFO fractions are being obtained by preparative gas chromatography. Use of gas chromatography-mass spectrometry to identify the impurities in FEFO was not successful. Gas chromatography analysis of gas samples taken from the coupon test are reported. Analysis from the third compression type coupon test is reported. The LX-09 lost some of its mechanical strength and was a dark purple. Some of the problems of measuring sample temperature in the high pressure DTA are discussed. DTA thermograms at ambient and elevated pressures are reported for FEFO, nitromethane, Na{sub 3}PO{sub 4}{center_dot}10 H{sub 2}O, and NH{sub 4}H{sub 2}PO{sub 4}.
Date: December 31, 1969
Creator: Myers, L.C.
Partner: UNT Libraries Government Documents Department

AXO detonator. Quarterly report, June--August, 1969

Description: A factorial spark gap detonator study is presented, with the results. UK PETN, (MF 81/10, 6,200 cm{sup 2}/g) at 1.12 g/cm{sup 3} had a higher voltage breakdown and a higher power deposition than others in the test. A somewhat unusual firing system employed for these tests is described. The purpose of the experiment was for determining the effect of specific surface areas (or particle sizes), density, and energy input (including rate of energy input) upon various dependent variables.
Date: December 31, 1969
Creator: Hanes, L.D.
Partner: UNT Libraries Government Documents Department

HE calorimetry. Quarterly report, April--June, 1969

Description: The 48-inch detonation sphere confined the gaseous products resulting from the discharge of approximately one-half pound (225 g) of an HE (PETN) under investigation. Product analysis, combined with calorimetric measurements will provide data regarding the detonation processes. Results of the initial HE detonation are still in the process of evaluation and tabulation. The final summary of this information will be instrumental in the direction of future experimental endeavor. Investigation at Pantex will be in collaboration with and guided by the research in progress at LRL. A new lid, still in the design stage, must be fabricated to make the detonation sphere compatible with the anticipated need in the testing of future explosives. This will necessitate the modification of the vacuum lines, but the extent of this modification is not known at this time.
Date: December 31, 1969
Creator: Sandoval, J.
Partner: UNT Libraries Government Documents Department

Possible techniques for decontamination of natural gas from gas wells stimulated by a nuclear explosion

Description: Decontamination of the products from gas wells stimulated by nuclear explosions requires the removal of T, present as HT, CH/sub 3/T, C/sub 2/H/sub 5/T, etc., and Kr/sup 85/ from the production stream. Flaring of large volumes of gas from the Gasbuggy well led to the replacement of radioactive cavity gas with inactive formation gas, but this would not be a satisfactory production procedure because it releases T and Kr/sup 85/ into the atmosphere and wastes large amounts of product gas. Exchange reactions appear to offer promise for removing the tritium. For example, water or steam flowing countercurrent to tritiated gas in the presence of a suitable catalyst can participate in the exchange reactions CH/sub 3/T + H/sub 2/O = CH/sub 4/ + HTO, and HT + H/sub 2/O = H/sub 2/ + HTO, resulting in the transfer of T from gas into water. Other possibilities for utilizing exchange reactions include exchange of the gas with ethylene glycol used in the gas dryer, with silicate rocks introduced into the gas stream, or with a countercurrent stream of NH/sub 3/ or H/sub 2/S. As another approach, use of the contaminated gas for the manufacture of ammonia synthesis gas has potential for removal of both T and Kr/sup 85/.
Date: October 1, 1969
Creator: Wethington, J.A. Jr.
Partner: UNT Libraries Government Documents Department

Interim readiness plan

Description: This report provides rough designs and costs for 3 payloads which can be built on a relatively fast time scale. With these, Lawrence Radiation Laboratory (LRL) could measure neutrons and X-rays from high altitude shots. No measurements of soft X-rays (less than or approximately equal to 5 kev), hard X- rays (greater than or approximately equal to 60 kev), or gamma rays would be made. Plans could be made to fly the Simplex payload as part of the spring Lapwing exercise. Some interim capability exists from other sources which might compliment the above measurements. Sandia has developed a mylar sail sampler which could be used for debris experiments. There is a LASL/Sandia scan converter which could be fielded to make fast time-history measurements of the X-ray or gamma ray pulse. Interval time could be measured with a ground based EMP detector. The LRL cost of this interim rocket program is approximately 5 man years of effort and about $140,000 of major procurement. Sandia would need approximately $450,000 to stockpile payloads. I believe the necessary rockets are already stockpiled but some work on the ranges might be required. For example, more launchers are needed on Johnston Atoll. All this money and effort would be expended in FY- 1970 and these rocket experiments would be ready (`on the shelf` or close) by June 1970.
Date: March 1, 1969
Creator: Seward, F. D.
Partner: UNT Libraries Government Documents Department

A heuristic examination of scaling

Description: This study investigates the scaling of dimensions of craters formed by nuclear explosive sources as well as the problem of making consistent estimates of other geonuclear effects including maximum base surge radius, vented fraction of the gamma emitting radionuclides appearing in close-in fallout, and main cloud dimensions. Input to the proposed scaling method includes the Froude number as determined by the depth of burial and the mound surface velocity at vent time, and the pressure in the cavity at vent time. These inputs are provided from long-running cratering-mechanincs numerical calculations. Illustrations are given of the use of the method for 1 Mt and 200 kt cratering events. 10 refs., 10 figs., 7 tabs.
Date: July 14, 1969
Creator: Knox, J. B.
Partner: UNT Libraries Government Documents Department

Effect of ground motion from nuclear excavation: interim canal studies

Description: 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.
Date: September 1, 1969
Creator: King, C. Y. & Nadolski, M. E.
Partner: UNT Libraries Government Documents Department

The Effect of Soil Parameters on Earth Penetration of Projectiles

Description: The purpose of this study can be divided into the three following parts: 1) to present complete sets of data obtained for projectile penetration into soil targets of precisely known properties, and to describe how to build and test these targets; 2) to present a numerical method of data analysis for empirically determining the force on a projectile, during penetration; and 3) to demonstrate how physical soil parameters, as well as impact velocity and a projectile property influence penetration.
Date: July 1, 1969
Creator: Thompson, L J; Ferguson, III, G H; Murff, J D & Cetiner, A
Partner: UNT Libraries Government Documents Department

A Miniaturized Gap Test

Description: A test arrangement and procedure has been devised for a miniaturized gap test in which the donor is essentially a length of hypodermic needle tubing loaded with an exploslve. The particular size used in the work reported hereln had an explosive column charge diameter of 33 mils. The procedure was used to determine gap sensitivities of several explosives including tetryl, RDX, PETN, HMX, and PBXN-5. Several of the explosives were tested of more than one particle size and loaded at more than one density. Within the group of explosives tested, both particle size and loading density had more affect upon sensitivity, as measured in these tests, than did composition. The coarser materials were found to be both less sensitive and more variable than the fine explosives. The fine explosives were found to become less sensitive as the loading density increased. This trend was apparently reversed for the one coarse explosive (RDX, Class a) for which data was obtained. The test arrangement and procedure is a promising tool for the acquisition of data for the design of fuzes of minimum dimensions.
Date: June 1, 1969
Creator: Stresau, R H
Partner: UNT Libraries Government Documents Department

Project Rulison: post-shot plans and evaluations

Description: Project Rulison post-shot plans and evaluations are discussed and include physical characteristics of the Rulison cavity; pressure and temperature expected in the cavity; amount, nature, and distribution of radioactivity in the cavity; reentry plan; radioactive species which may be encountered during reentry; public safety considerations arising from release of radioactivity; procedures to assure public safety; and the radiological safety plan. Maximum hypothetical accidents and ecological considerations are discussed in the appendices.
Date: December 1, 1969
Partner: UNT Libraries Government Documents Department