147
molten-salt mixtures, and bismuth containing lithium
together with an electron-beam girth weld. Intermediate
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brication will be
lithium solutions u
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Work was continued on the construction o f a molybdenum reductive-extraction test stand for chemical processing studies. unjoined mockup was constructed with actual test-stand components to check for proper alignment and to reaffirm the step-by-step fabrication sequence. A photograph of the mockup is omponents of the
in.-oD 5-ft-10ng packed uth and salt streams will counterend arid two different tube sizes ('4 in. OD X 0.020 in. wall, &' in. OD X 0.025 in. wall, in. OD X 0.030 in. wall, and 'I8 in. 0 .'wall) interconnect the vari nents. Details of the design of the test stand have been ruction of the test stand have been completed: (1) fabrication of back-extruded half sections and column, (2) machining of subassembly
sleeve brazed around it for reinforcement. Details of the fabrication and joining studies related to COnstruCtiOn of the test stand are reported in the following sections. 13.2 WELDING OF MOLYBDENUM
A. J. Moorhead
During th eport period all of molybdenum test stand were installed along with the extruded nents on the field assembly jig. stress-relieved for 60 min in vacu at selected locations using ou
Program for the Molybdenum Reductive-Extraction Equipment
Test Stand, ORNLCF-71-7-2 (July 1). 2. J. R. DiStefano, MSR Program nnu. Progr. Rep. Aug. 31,1971, ORNL-4728, pp. 163-69. 3. J. R. DiStefano and A. J. Moorhead, MSR Program Semiannu. Progr. Rep. Feb. 2Y, lY72, ORNL-4782, p. 194.