NBS Handbook, Issue 42

Front Cover
U.S. Government Printing Office, 1949 - Industrial safety

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Page 26 - Radioactive materials that present special hazards due to their tendency to remain fixed In the human body for long periods of time (ie, radium, Plutonium, and radioactive strontium, etc.) must, in addition to the packing...
Page 28 - The inside containers must be surrounded on all sides by an absorbent material sufficient to absorb the entire liquid contents and of such nature that its efficiency will not be impaired by chemical reaction with the contents.
Page 28 - ... 0.1 millicuries of radium, or polonium, or that amount of strontium 89, strontium 90, or barium 140 which disintegrates at a rate of more than 5 million atoms per second; or that amount of any other radioactive substance which disintegrates at a rate of more than 50 million atoms per second.
Page 26 - All outside shipping containers must be of such design that the gamma radiation will not exceed 200 mr/hr or equivalent at any point of readily accessible surface. Containers must be equipped with handles and protective devices when necessary in order to satisfy this requirement...
Page 6 - In the absence of an internationally accepted unit, the "rep" is a convenient shorthand notation for statements of dose of ionizing radiation not covered by the definition of the roentgen. It represents that dose which produces energy absorption of 93 ergs/gram of tissue.
Page 26 - ... from any point on the radioactive source will not exceed 10 milliroentgens per hour. The shield must be so designed that it will not open or break under conditions incident to transportation. The minimum shielding must be sufficient to prevent the escape of any primary corpuscular radiation...
Page iii - At a meeting of this committee in December 1946, the representatives of the various participating organizations agreed that the problems in radiation protection had become so manifold that the committee should enlarge its scope and membership and should appropriately change its title to be more inclusive. Accordingly, at that time the name of the committee was changed to the National Committee on Radiation Protection. At the same time, the number of participating organizations was increased and the...
Page 26 - ... be packed in suitable inside containers completely surrounded by a shield of lead or other suitable material of such thickness that at any time during transportation the gamma radiation at one meter (39.3 inches) from any point on the radioactive source will not .exceed 10 milliroentgens per hour.
Page 9 - ... the feces may be required when the predominant elimination is by feces. Special tests for specific isotopes are in order when they exist (eg, radioiodine may be estimated in the thyroid gland in terms of the emitted gamma radiation measured by a Geiger counter or ionization chamber). Where exposure 4 A single exposure of 25 r can apparently escape detection by standard blood counting techniques.
Page iii - In order to distribute the work load, eight working subcommittees were established as noted below. Each of these committees is charged with the responsibility of preparing protection recommendations in its particular field. The reports of the subcommittees are approved by the main committee before promulgation. The following parent organizations and individuals comprise the main committee : HL ANDREWS, United States Public Health Service. EG WILLIAMS, MD, United States Public Health Service. SHIELDS...

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