ASTM E 1607 : 2022
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Practice for Use of an Alanine-EPR Dosimetry System
Hardcopy , PDF
12-12-2024
English
01-01-2022
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
E 61
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| DocumentType |
Standard Practice
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| Pages |
7
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1This practice covers dosimeter materials, instrumentation, and procedures for using the alanine-EPR dosimetry system to measure the absorbed dose in the photon or electron radiation processing of materials. The alanine system is based on electron paramagnetic resonance (EPR) spectroscopy of free radicals derived from the amino acid alanine.2
1.2The alanine dosimeter is classified as a type I dosimeter as it is affected by individual influence quantities in a well-defined way that can be expressed in terms of independent correction factors (see ISO/ASTM Practice 52628). The alanine dosimeter may be used in either a reference standard dosimetry system or in a routine dosimetry system.
1.3This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation processing, and describes a means of achieving compliance with the requirements of ISO/ASTM 52628 “Practice for Dosimetry in Radiation Processing” for alanine dosimetry system. It should be read in conjunction with ISO/ASTM 52628.
1.4This practice covers the use of alanine-EPR dosimetry systems under the following conditions:
1.4.1The absorbed dose range is between 0.001 kGy and 150 kGy.
1.4.2The absorbed dose rate is up to 1 × 102 Gy s-1 for continuous radiation fields and up to 3 × 1010 Gy s-1 for pulsed radiation fields (1-4).3
1.4.3The radiation energy for photons and electrons is between 0.1 MeV and 30 MeV (1, 2, 5-8).
1.4.4The irradiation temperature is between –78 °C and +70 °C (2, 9-12).
1.5This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6This 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.
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