Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM E181-17
• Năm ban hành / Publication date: 2017
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Methods for Detector Calibration and Analysis of Radionuclides
• Chỉ số phân loại Quốc tế (ICS) / By field: 17.240 - Ðo phóng xạ
• Số trang / Page: 21
• Phạm vi áp dụng / Scope of standard: 1.1 These test methods cover general procedures for the calibration of radiation detectors and the analysis of radionuclides. For each individual radionuclide, one or more of these methods may apply. 1.2 These test methods are concerned only with specific radionuclide measurements. The chemical and physical properties of the radionuclides are not within the scope of this standard. 1.3 The measurement standards appear in the following order: Sections Spectroscopy Methods: Calibration and Usage of Germa- nium Detectors 3 - 12 Calibration and Usage of Scintillation Detector Systems: 13 - 20 Calibration and Usage of Scintillation Detectors for Simple Spectra 16 Calibration and Usage of Scintillation Detectors for Complex Spectra 17 Counting Methods: Beta Particle Counting 25-26 Aluminum Absorption Curve 27 - 31 Alpha Particle Counting 32 - 39 Liquid Scintillation Counting 40 - 48 1.4 Additional information on the set-up, calibration and quality control for radiometric detectors and measurements is given in Guide C1402 and Practice D7282. 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 problems, 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. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.