ASTM standard News
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ASTM E2450 - 11 standard practice for application of CaF2(Mn) Thermoluminescence Dosimeters in mixed neutron-photon environments
1. Scope 1.1 This practice describes a procedure for measuring gamma-ray absorbed dose in CaF2(Mn) thermoluminescence dosimeters (TLDs) exposed to mixed neutron-photon environments during irradiation of materials and devices. The practice has broad application, but is primarily intended for use in the radiation-hardness testing of electronics. The practice is applicable to the measurement ...
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ASTM D3454 - 11 standard test method for radium-226 in water
The most prevalent of the five radium isotopes in ground water, having a half life greater than one day, are 226Ra and 228Ra. These two isotopes also present the greatest health risk compared to the other naturally occurring nuclides of equal concentrations if ingested via the water pathway. Although primarily utilized on a water medium, this technique may be applicable for the ...
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ASTM F1467 - 11 Standard guide for use of an X-ray tester
Significance and Use Electronic circuits used in many space, military and nuclear power systems may be exposed to various levels of ionizing radiation dose. It is essential for the design and fabrication of such circuits that test methods be available that can determine the vulnerability or hardness (measure of nonvulnerability) of components to be used in such systems. Manufacturers are ...
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ASTM D3454 - 11 standard test method for radium-226 in water
The most prevalent of the five radium isotopes in ground water, having a half life greater than one day, are 226Ra and 228Ra. These two isotopes also present the greatest health risk compared to the other naturally occurring nuclides of equal concentrations if ingested via the water pathway. Although primarily utilized on a water medium, ...
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ASTM C993 - 97(2012) Standard Guide for In-Plant Performance Evaluation of Automatic Pedestrian SNM Monitors
SNM monitors are an effective and unobtrusive means to search pedestrians for concealed SNM. Facility security plans use SNM monitors as one means to prevent theft or unauthorized removal of designated quantities of SNM from access areas. Daily testing of the monitors with radioactive sources guarantees only the continuity of alarm circuits. The in-plant evaluation is a way to ...
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ASTM F1190 - 11 standard guide for neutron irradiation of unbiased electronic components
Semiconductor devices can be permanently damaged by reactor spectrum neutrons (1, 2) . The effect of such damage on the performance of an electronic component can be determined by measuring the component’s electrical characteristics before and after exposure to fast neutrons in the neutron fluence range of interest. The resulting data can be ...
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ASTM D7771 - 11 Standard Test Method for Determination of Benzo-α-Pyrene (BaP) Content in Carbon Black
This test procedure is used to determine the concentration of BaP extracted from carbon black by the means of a Soxhlet extraction apparatus with toluene. 1. Scope 1.1 This test method covers the qualitative and quantitative determination of only benzo-α-pyrene (BaP), a specific polycyclic ...
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ASTM C1169 - 97(2012) Standard Guide for Laboratory Evaluation of Automatic Pedestrian SNM Monitor Performance
SNM monitors are an effective and unobtrusive means to search pedestrians for concealed SNM. Nuclear facility security plans often include SNM monitors as one means to help prevent theft or unauthorized removal of designated quantities of SNM from access areas. This guide describes a way to evaluate and categorize the relative performance of available SNM monitors that ...
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ASTM E2304 - 03(2011) standard practice for use of a LiF photo-fluorescent film dosimetry system
A lithium fluoride (LiF)-based photo-fluorescent film dosimetry system provides a means of determining absorbed dose to materials by the photo-stimulated emission of wavelengths longer than that of the stimulation wavelength. The absorbed dose is obtained from the amount of the light emission. Imperfections ...
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ASTM C799 - 12 Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Nuclear-Grade Uranyl Nitrate Solutions
Uranyl nitrate solution is used as a feed material for conversion to the hexafluoride as well as for direct conversion to the oxide. In order to be suitable for this purpose, the material must meet certain criteria for uranium content, isotopic composition, acidity, radioactivity, and impurity content. These methods are designed to show whether a given material meets the specifications for these ...
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