Ret, cere ae demennetrteen UNCLASSIFIED in research and therapy. Radiation Instruments Progran Jncludes: Study of film dosimeters. A report has been completed on fhe evaluation of the several types of film dosimeters in use at the various AEC installations. The work consisted of two parts: (1) Study offthe sensitivity, quality dependence, and maximum range of the film badke: and (2) a cross-calibration study. Some 15 different AEC installations participated, and the show that most of these installations are able to get a fair degree precision in measuring and interpreting gamma and X ray radiation over a wide range of energies and intensities. The survey has beqnm portant in pointing out areas where improvements may be initiated to reduce inaccuracies in film dosimeter measurements. Findings of Hoses im- . fin order Testing of radioactive electric cells. Tests were made offtwo Model E-50 electric cells of the radioactive source type manufact red by the Radiation Research Corp. of West Palm Beach, Florida. These first cells of this type which have appeared on the market. Preliminary claimed by the manufacturer. However, the voltage of the cells load is applied showed some dependence on humidity conditions. en no application in low-current devices where long storage and small dimensions are required. General The Advisory Board on Water Decontamination met at Oak Ridge National Laboratory in October to review the current status of tle Oak Ridge project on water decontamination. The board was set up inf1950 to “provide technical advice on the project which is under the nomingl supervision of the U. 5. Public Health Service at Oak Ridge. Represehtatives were present from AEC, U. S. Public Health Service, Department Defense (AFSWP), New York State Waterworks Commission, and the American Waterworks © Associations. . by natural agents, water decontamination, and instrumentation. port will be revised to include further studies and later issue official document for distribution by the Oak Ridge National LaBoratory. It contains comprehensive data on decontamination studies and will be of considerable value to all waterworks engineers in the country, In addition to having wide application in AEC operations. UNCLASSIFIED , DOF ARCHIVES tee Recent work under the cooperative agreement with the Natio Bureau of Standards for studies in the radiation instrument field