Organic Reactor Technology Quarterly Report

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ISBN 13 :
Total Pages : pages
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Download or read book Organic Reactor Technology Quarterly Report, April 1-JUNE 30, 1962 written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The deposition of film was studied in irradiated circulating loops, in which both grounded and insulated plates were in the irradiated coolant volume; the purpose of these tests was to determine the effect on rate of film formation of charges generated on particulate matter or coolant molecules in the radiation field. Heavier deposits were found on the grounded plates and currents up to 30 microamp were measured flowing to this plate. Tests in the rocking cell showed that techniques are now available whereby this apparatus can be used with confidence to screen film-forming characteristics of coolant compositions. It was demonstrated that iron percarbide (Fe/sub 20/C/sub 9/) could be made under conditions comparable to those in the OMRE. It was made from an iron chelate by carbon monoxide reduction and emphasizes the possible importance of oxygen containing chelate in the transport of iron and deposition of film. The nature of the impurities occurring in commercial Santowax was examined and some highly colored, oxygenated material isolated. The hexaphenyls produced in irradiation of m- and p-terphenyls and in the reaction of polyphenyls with hydrogen atoms was studied. Further work was initiated in the area of synthesis of reference hexaphenyls, but synthesis of new candidate coolants also was continued. Areas under study included non-benzenoid heterocyclics, fused ring compounds, and hydrogen donor compounds. Partially hydrogenated fused ring structures, such as dihydrophenanthrene, continue to look very promising. Stabilizer studies were directed largely toward this area also, but the stabilizer program was brought to a close. The study of hydrocracking of high boiler was completed with a few additional catalyst tests. The treatment of unfractionated coolant was further developed and cortinued to look like the most desirable operation. Preliminary economic evaluations on the hydrocracking routes to reclamation were completed and looked attractive. Design liaison on the coolant technology and fuel technology loops and on loop handling equipment is nearing completion. Loop construction is about 13% completed. Overall completion of the basic EOCR was approximately 90% at the end of the reporting period. The outof-pile Component Developmert Test Loop was operated for chem-pump testing with diphenyl-terphenyl eutectic fluid at temperatures up to 600 deg F. Methods of attaching thermocouples to fuel plates and of leading them out of the fuel assembly were studied. Both high temperature furnace brazing and resistance spot welding were used for attachment in these studies, and the brazing method was selected as the preferred method for attaching thermocouples to the instrumerted fuel plates. A detailed study of the locations of the thermocouples was completed. The practicability of using ethylene glycol as a displacement cleaner of fuel elements was demonstrated. Studies on film formation from Santowax refluxed with chemically cleaned pipe sections indicated that the passivation film dissolves in the organlc and increases the film deposit. this effect is eliminated by one refluxing with Santowax. Capsules for use in the MTR hydraulic rabbit facility were designed and built. These furnish heat by gamma absorption and permit organic samples to be irradiated at desired temperatures in a neutron field. An improved capsule for pyrolytic fouling was under test. Initial results were satisfactory and indicate that useful heat transfer data on the coolant may be an unexpected dividend from use of this apparatus. (auth).