Standard Practice for Dosimetry in Radiation Processing
4.1 Radiation processing of articles in both commercial and research applications may be carried out for a number of purposes. These include, for example, sterilization of health care products, reduction of the microbial populations in foods and modification of polymers. The radiations used may be accelerated electrons, gamma-radiation from radionuclide sources such as cobalt-60, or X-radiation.
4.2 To demonstrate control of radiation processes that are dependent on the delivery of a known dose, the absorbed dose must be measured using a dosimetry system, the calibration of which, is traceable to appropriate national or international standards. The radiation-induced change in the dosimeter is evaluated and related to absorbed dose through calibration. Dose measurements required for particular processes are described in other standards referenced in this practice.
1.1 This practice describes the basic requirements that apply when making absorbed dose measurements in accordance with the ASTM E61 series of dosimetry standards. In addition, it provides guidance on the selection of dosimetry systems and directs the user to other standards that provide specific information on individual dosimetry systems, calibration methods, uncertainty estimation and radiation processing applications.
1.2 This practice applies to dosimetry for radiation processing applications using electrons or photons (gamma- or X-radiation).
1.3 This practice addresses the minimum requirements of a measurement management system, but does not include general quality system requirements.
1.4 This practice does not address personnel dosimetry or medical dosimetry.
1.5 This practice does not apply to primary standard dosimetry systems.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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