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This International Standard specifies methods for the determination of discharge in open channels in steady flow conditions using vertical underflow gates on a flat horizontal floor between vertical side walls under modular or non-modular conditions.

ISO/ASTM 51401 covers the preparation, testing, and procedure for using the acidic aqueous silver dichromate dosimetry system to measure absorbed doses in water when exposed to ionizing radiation. The system consists of a dosimeter and appropriate analytical instrumentation. For simplicity, the system is referred to as the dichromate system and is classified as a reference standard dosimetry…

ISO/ASTM 51631 covers the preparation and use of semi-adiabatic calorimeters for measurement of absorbed doses in graphite, water or polystyrene when irradiated with electrons. The calorimeters are either transported by a conveyor past a scanned electron beam or are stationary in a broadened beam. It also covers the use of these calorimeters to calibrate dosimeter systems in electron beams…

ISO/ASTM 51649 covers dosimetric procedures to be followed in facility characterization, process qualification and routine processing using electron beam radiation in order to ensure that the entire product has been treated with an acceptable range of absorbed doses. Other procedures related to facility characterization (including equipment documentation), process qualification and routine…

ISO/ASTM 51707 defines possible sources of error in dosimetry performed in gamma, X-ray (bremsstrahlung) and electron irradiation facilities and offers procedures for estimating the resulting magnitude of the uncertainties in the measurement results. Basic concepts of measurement, estimate of the measured value of a quantity, 'true' value, error and uncertainty are defined and discussed…

ISO/ASTM 51818 covers dosimetric procedures to be followed in order to determine the performance of low energy (300 keV or less) single-gap electron beam radiation processing facilities. Other practices and procedures related to facility characterization, product qualification and routine processing are also discussed. The electron energy range covered in this International Standard is from 80…

ISO/ASTM 15900 covers the minimum requirements for dosimetry and absorbed-dose validation needed to conduct research on the irradiation of food and agricultural products. Such research includes establishment of the quantitative relationship between the absorbed dose and the relevant effects in these products. This International Standard also describes the overall need for dosimetry in such…

ISO/ASTM 51939 outlines irradiator installation qualification and dosimetric procedures to be followed in the irradiation of blood and blood products by the blood-banking community. If followed, these procedures will help to ensure that the products processed with ionizing radiation from gamma, bremsstrahlung X-rays or electron sources receive absorbed doses within a predetermined range. ISO/ASTM…

ISO/ASTM 51940 outlines dosimetric procedures to be followed for the radiation sterilization of live insects for use in pest management programmes. The primary use of irradiated, reproductively sterile insects is in the Sterile Insect Technique, where large numbers of sterile insects are released into the field to mate with and thus control pest populations of the same species. A secondary use of…

ISO/ASTM 51261 covers the basis for selecting and calibrating dosimetry systems used to measure absorbed doses in gamma-ray or X-ray fields and in electron beams used for radiation processing. It discusses the types of dosimetry systems that may be used during calibration or on a routine basis as part of quality assurance in commercial radiation processing of products. ISO/ASTM 51261 also…