We have designed leaching systems for experiments on several kinds of solids, including glassy debris from underground nuclear explosions at Nevada Test Site (puddle glass), refractory compositions for retention of radioactive nuclear reactor waste, and spent reactor fuel. The system used on puddle glass has a continuously variable flow rate from 13 to 460 cm/sup 3//d, a temperature range from 25 to 75/sup 0/C, operating capacity for up to 20 simultaneous experiments, and one-pass operation with continuous exposure of samples to fresh solution. Results obtained on puddle glass are in qualitative agreement with those on silicate glasses designed for isolation of nuclear reactor waste.

During this report period, a decision was made to defer the construction of the 50 MT Si/year Experimental Process System Development Unit (EPSDU) until FY 1980, and in the meantime to construct and evaluate, at full scale, four critical units of the EPSDU. The fluidized bed, zinc vaporizer, by-product condenser, and electrolytic cell have been combined with auxiliary units, capable of supporting 8-hour batchwise operation, to form the Process Development Unit (PDU), which is scheduled to be in operation by October 1, 1979. The design of the PDU and objectives of its operation are discussed. Pending completion of the PDU, work has continued in the area of experimental support. A wetted-wall condenser has been constructed in which zinc chloride, introduced in excess of that condensed, is used to wash down the unreacted zinc and residual silicon accumulated as fine-particle solids. Improvements in the experimental electrolytic cell have led to power efficiencies around 40%, thus substantiating the pertinence of the Bureau of Mines experience with pure zinc chloride as a basis for what can be expected with the zinc chloride/zinc/silicon slurry of the present application. (WHK)

The results are presented of an examination of 17 samples obtained from various components of the subject geothermal heating system. The samples obtained for this study were selected to represent the several materials of construction and equipment ages of the various components in this system. For purposes of this report, the samples have been grouped into three categories by material: ferrous, non-ferrous and non-metallic. Failures in these components have taken the form of leakage at solder joints, tubing perforation, scaling, or valve seizure. Most components evaluated in this examination have been in service for 14 years. This work documents these failures, discusses their causes and recommends possible remedial action.

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: Authority of Department of Corrections to spend building appropriation on employment of guards.

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.

The combined electrolysis-catalytic-exchange pilot system was modified to improve the reliability of the unit for continuous operation. An experimental run for 60 consecutive hours using a single catalytic exchange column was made to estimate values of height of a transfer unit and height equivalent to a theoretical plate for the pilot system. The calculated values were in agreement with existing data from a bench-scale system. Further experiments were performed with the cryogenic hydrogen isotope distillation system, this time using H/sub 2/-HT mixtures. A mixture containing approximately 250 Ci/m/sup 3/ of HT in H/sup 2/ was stripped to less than 0.1 Ci/m/sup 3/, while a product of 1100 Ci/m/sup 3/ was recovered. Two experiments were successful in separating gaseous hydrogen containing tritium from tritiated water. Initial tritium concentrations of the water were approximately 1 and 10 Ci/cm/sup 3/. Radiolytic damage tests of a hydrophobic exchange catalyst being used in the development of a process to recover tritium from tritiated waste water are reported. Triplicate samples of cement, cement-plaster (1:1 ratio by weight), and cement-plaster (1:1 ratio by volume) were injected with 386 Ci of tritium, cured for five days, and then impregnated with catalyzed styrene monomer. After polymerization, the samples were …

Letter opinion 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; Constitutionality of S.B. 1019 which would authorize the Finance Commission to set interest rates on certain loans.

None

None

None

None

This report is about the Gasohol: The Alcohol Fuels Issue Brief number IB74087

None

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: The constitutionality of Article 7150, § 28, V.T.C.S., providing a tax exemption for certain organizations which hold land for donation to medical uses.

None

This report discusses national urban growth policy and provides summaries of eight Congressional seminars on the topic.

None

None

This report is a look into legislative history, addressing the senate floor consideration of s. 659 and the education amendments of 1972

None

The experiments using a cloud chamber in a magnetic field and an ionizing calorimeter exposed io cosmic rays have been performed at the Lebedev Physical Institute I 1-3 I. They have shown that the hadron interactions with a LiH target at the energies of 200-700 Gev can be explained on the basis of the fireball model, supposing one fireball formation in a peripherical process, for about 50 per cent of events. The experiments carried out at the accelerator beams using the photoemulsion method at CERN (Eo = 2l-24 Gev) I 4 I and at Serpukhov (Eo = 60 Gev) I 5 I have indicated that the same model can describe the essential part of the pN- and {pi}iN - interactions (the quasi-free nucleon interactions are selected with the help of the criteria, approbated at the energies of {approx}20 Gev). It seems to be very important to continue this photoemulsion experiment at the energies of 200-500 Gev at the Batavia accelerator retaining the previous method of selecting the quasi-free nucleon interactions and measuring besides the emission angles of the charged particles also the momenta of these particles by their Coulomb scattering. Under the favourable conditions of exposure of the Soviet emulsions …

The purpose of this report is to help achieve the overall program goals for the development of thermo-electric modules to be incorporated in reactor or isotope space-vehicle power systems, a series of design objectives was specified.