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Standard Guide for Use of Radiation-Sensitive Indicators
STANDARD published on 8.8.2013
Designation standards: ASTM/ISO 51539-05(2013)
Publication date standards: 8.8.2013
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
electron beam, gamma radiation, ionizing radiation, irradiation, radiation indicator, radiation processing, radiationsensitive indicator, X-radiation, X-rays, ICS Number Code 17.240 (Radiation measurements)
|Significance and Use|
4.1 Indicators may be used to show that products have been exposed to a radiation source. They should be used only to provide a qualitative indication of radiation exposure and may be used to distinguish processed loads that have been irradiated from unirradiated process loads.
NOTE 1—The use of indicators does not eliminate the need for other process-control procedures, such as quantitative dosimetry or the controlled segregation of irradiated from nonirradiated products.
NOTE 2—See ISO/ASTM Standards 51204, 51431, 51608, 51649, 51702, 51939, and 51940 for information on the use of indicators in the various types of processing facilities and for unique product applications.
4.2 The indicator manufacturer is obliged to supply a statement regarding the approximate dose level at which the examiner (20/20 vision), at standard illumination (unfiltered daylight, or artificial light of the spectrum and intensity defined by the proper ASTM standard), is able to determine the visual change in the indicator.
1.1 This guide covers procedures for using radiationsensitive indicators (referred to hereafter as indicators) in radiation processing. These indicators may be labels, papers, inks or packaging materials which undergo a visual change when exposed to ionizing radiation (1-5).2
1.2 The purpose for using indicators is to determine visually whether or not a product has been irradiated, rather than to measure different dose levels.
1.3 Indicators are not dosimeters and shall not be used as a substitute for proper dosimetry. Information about dosimetry systems for radiation processing is provided in other ASTM and ISO/ASTM documents (see ISO/ASTM Guide 51261).
1.4 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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