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SFS-EN 12679:2018:en

Non-destructive testing. Radiographic testing. Determination of the size of industrial radiographic gamma sources

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This document specifies the determination of the size of gamma radiographic sources of 0,5 mm or greater, made from the radionuclides Iridium 192, Ytterbium 169, Selenium 75 or Cobalt 60, by a method of radiography with X-rays. The source size of a gamma radiography source is an important factor which affects the image quality of gamma ray images.
The source size is determined with an accuracy of ± 10 % but typically not better than ± 0,1 mm.
The source size is provided by the manufacturer as the mechanical dimension of the source insert. A measurement may be required if the manufacturing process is validated or monitored after implementation of the source into the holder.
This document can be used for other radionuclides after validation.
The standard test method ASTM E1114 provides further information on the measurement of the Ir-192 source size, the characterization of the source shape, and its correct assembly and packaging.


Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sidokset
Velvoittavat viittaukset
ASTM E 2002:2015 Standard Practice for Determining Total Image Unsharpness and Basic Spatial Resolution in Radiography and Radioscopy
ASTM E 2597/E 2597M:2014 Standard Practice for Manufacturing Characterization of Digital Detector Arrays
EN ISO 19232-5:2018 Non-destructive testing - Image quality of radiographs - Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators (ISO 19232-5:2018)
Vahvistuspäivä
09.11.2018
Julkaisupäivä
13.11.2018
Painos
2
Sivumäärä
12
Julkaisun kieli
englanti

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