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AND PROGRESS REPORT OAK RIO GE OPERA TI ' ONS t - 1 US DOE ARCHIVES
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BIOIDGY AND MEDICINE OAK EIDGE NATIOHAL LABORATORP Evaluating Hazards Associated with Radioactive Wastes. entrainment well, " t o be used for a study of the de-entrainment of . aerosols evolved f r o m boiling radioactive liquids , was desigbed, fab- ' ricated, -and installed in the gr md near waste pit No. 3 . The well i s 20 f t deep and 3 ft i n diameter. power input of about 12 raise the temperature of about 750 gallons of water t o the boiling point and also supply the necessaryheat of vaporization. tfshakedornn studies t o date have shorn thata is sufficrent t o operate the well, i.e., t o with the Civil Effects Program i n obtaining neutron data in Operation Teapot, F'udamental spectral data were obtained, for various shielding materials and geometrical.amangements, by the use of neutron . near ground level in air, did not change appreciably over the range from 100 to 1000 yds. The Eighth Annual Biology Symposium. tein Synthesislt was. concluded a t Gatlinburg, Tennessee, April 6, and was attended by 137 representatives of 68 educational and sci ents ic The Dosimetry Applications group cooperated The dose i n "rep". .. was computed from the A special meeting and round-table discussion on "Rare Earths in Biochemical and Medical Research"' was held i n San Francisco.Apri1 a;approfimately 70 persons attended.
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- OAK RIDGE OPERATIONS Construction Status Principal Projects i n progress .............. I; Construction Status .ADP, Paducah, and Expansion Projects ......... 5 Fissionable Materials Facilities ................................... 6 Hydriside Facilities, Dayton ....................................... 8 Research and Development ............................................ 9 Research and Development ........................................... 9 BIOLOGY AND MEDICINE
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Laboratory tests of centrated radioactive wastes habe been extended, has clay and asphalt walls and is filled with gravel and sand. the radiation, heat, and chemical resistance’ properties of p i t materials are -being One type of p i t under considerathn ” Several small experimental p i t s have been constructed and are’b’eing evaluated. Laboratory-scale experiments for testing the adaptability of ion exchange I n these tests different ion exchange resins were. tested eth various methods f o r the removal of radioactive contamination i n military water supplies were radioisotopes and fission-product mixtures, pH of the feed solution depends on the type of radioactive contaninant, cycle of the r e s i n used, chemical form of the contaminant, and other factors. The results indicated that the optimum cs> rays are detected with a sodium iodide crystal scintillation spectrometer, Experimental Radiation Measgrements--The scattering of gamma radiation froma concrete slab is under study. . and detector are suspended from a horizontal i r o n bar whose height above the concrete slab can be varied. - that the measured intensity reaches a maximum when the height above the surfacq of a3 tLe concrete is approximately 6 feet. A cow gamma-rag source is used and the reflected ,J For a source t o detector spacing of 20 feet, it was observed
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Radioactive Particulate F'r oblem-Aof air collected weekly duriag the histogram was plotted showing the average number of particles per 1ooo cu f t peri.od of March 1949 through December 1953 by ten continuous air monitors stationed throughout the Laboratory area, Errem one of t h e IXentY-fo~Periods of eperation coincides with a major peak of activity on the histogram. Evaluation of the monitoring data seems t,o show that the major portion of the act id ty discharged through the stack is