Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM C1458-09
Năm ban hành 2009
Publication date
Tình trạng
W - Hết hiệu lực
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Tên tiếng Anh
Title in English Standard Test Method for Nondestructive Assay of Plutonium, Tritium and 241Am by Calorimetric Assay
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 12
Giá:
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Phạm vi áp dụng
Scope of standard 1.1 This test method describes the nondestructive assay (NDA) of plutonium, tritium, and 241Am using heat flow calorimetry. For plutonium the typical range of applicability corresponds to ~1 g to ~2000 g quantities while for tritium the typical range extends from ~0.001 g to~ 10 g. This test method can be applied to materials in a wide range of container sizes up to 50 L. It has been used routinely to assay items whose thermal power ranges from 0.001 W to 135 W. 1.2 This test method requires knowledge of the relative abundances of the plutonium isotopes and the 241Am/Pu mass ratio to determine the total plutonium mass. 1.3 This test method provides a direct measure of tritium content. 1.4 This test method provides a measure of 241Am either as a single isotope or mixed with plutonium. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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