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, Will Wilson, regarding a legal question submitted for clarification: Requirements as to collateral under the provisions of Section 7 of Article 1524a.

A Darex flowsheet is presented wherein dissolution of stainiess steel- type fuel elements in dilute aqua regia, stripping of chloride from spent dissolver solution, adjustment of stripper product composition and rectification of HNO/sub 3/ --H/sub 2/O vapors are accomplished in a completely continuous relatively simple loop process. Product from the loop needs only dilution with water to be made suitable as feed for a solvent extraction processing plant. The proposed scheme differs from earlier concepts. A continuous, pot dissolver (well- mixed liquid phase) is utilized rather than a trickle type dissolver. A strip vapor slightly lower in HNO/sub 3/ concentration than the azeotrope is used. A feed adjustment tank serves not only to recover HNO/sbu 3/ --H/sub 2/O vapor, but also to dehydrate any silica present and to adjust the product composition such that upon water addition the material is ready for feed to solvent extraction. In most previous concepts, separate, batchwise feed adjustment was contemplated. (auth)

Molten salts provide the basis of a new family of liquid fuel power reactors. The range of solubility of uranium and thorium compounds makes the system flexible, and allows the consideration of a variety of reactors. Suitable salt mixtures have meltirg points in the 85O to 95O deg F range and will probably prove to be sufficiently compatible with known alloys and to provide lorg-lived components, if the temperature is kept below 13OO deg F. Thus the salt systems naturally tend to operate in a temperature region suitable for modern steam plants and achieve these temperatures in unpressurized systems. Some economic and other considerations are made. (T.R.H.)

Tests using a Westinghouse 400A canned motor circulating pump with various motor to impeller seal configurations are described. A configuration was found which allows very low flow rates and increases pump life. (T.R.H.)

The feasftbility of using gamma -ray attenuation techniques was demonstrated in determining the density and homogeneity of slurries circulating at 300 deg C. The method appears to have general utility in the engineering studies of slurry because the equipment is mounted externally and does not interfere with the system under investigation. Two types of detector systems were evaluated for routine service. The decimal counter-recorder system was found more adaptable for rugged operations, whereas the single channel analyzer was fouW to be more accurate and flexible. (auth)

Examination of corrosion specimens from the 948 hour slurry blanket mock- up Run SM-3 lndicated generally low attack rates on type 347 stainless steel, titanium -75A, and Zircaloy-2. The upstream coupon of the array, of type 347 stainless steel, suffered moderate but more severe attack. Coupons of SA-212 grade B carbon steel were severely attacked. No stress corrosion cracking was noted on samples, placed in the pressurizer, of types 347 and AM 350 stainless steels, titanium aluminum--vanadium alloy, or Zircaloy-2. (auth)

Report issued by the Oak Ridge National Laboratory discussing quarterly progress made by the Homogeneous Reactor Program. Descriptions of progress and studies conducted are presented. This report includes tables, illustrations, and photographs.