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ISO 17363-2-2013 pdf free download
ISO 17363-2-2013 pdf free download.Non-destructive testing of welds — Radiographic testing — Part 2:
X- and gamma-ray techniques with digital detectors
ContrOle non destructif des assemblages soudés — ContrOle par radio graphie — Partie 2: Techniques par rayons X ou gamma a l’aide de détecteurs numériques.
Permanent markings on the object to be examined shall be made in order to accurately locate the position of each digital radiograph (e.g. zero point, direction, identification, measure).
Where the nature of the material and/or its service conditions do not permit permanent marking, the location may be recorded by means of accurate sketches or photographs.
6.6 Overlap of digital images
When digitally radiographing an area with two or more separate detectors (imaging plates), they shall overlap sufficiently to ensure that the complete region of interest is digitally radiographed. This shall be verified by a high density marker on the surface of the object which is to appear on each digital image. If the radiographs are taken sequentially, the high density marker shall be visible on each of the radiographs.
6.7 Types and positions of image quality indicators
The quality of image shall be verified by use of image quality indicators (lQls) in accordance with ISO 19232-5 and ISO 19232-1 or ISO 19232-2.
Following the procedure outlined in Annex C, a reference image is required for the verification of the basic spatial resolution of the digital detector system. The basic spatial resolution or duplex wire value shall be determined to verify whether the system hardware meets the requirements specified as a function of the penetrated material thickness in Tables B.13 and B.14. In this case, the duplex wire 101 shall be positioned directly on the digital detector. The use of a duplex wire 101 (ISO 19232-5) for production radiographs is not compulsory. The requirement for using a duplex wire 101 additionally to a single wire lQl for production radiographs may be part of the agreement between the contracting parties. For use on production radiographs, the duplex wire 101 shall be positioned on the object. The measured basic spatial resolution of the digital
image (SR9e) (see Annex C), shall not exceed the maximum values specified as a function of the penetrated material thickness (Tables B.13 or B.14). For single image inspection, the single wall thickness is taken as the penetrated material thickness. For double wall double image inspection (Figures 11 or 12), with the duplex wire on the source side of the pipe, the penetrated material thickness is taken as the pipe diameter for determination of the required basic spatial resolution (SR8) from Tables B. 13 and B. 14. The basic
spatial resolution of the detector (SRg°0’ ) for double waft double image inspection shalt correspond to the values of Tables B.13 and B.14 chosen on the basis of twice the nominal single wall thickness as the penetrated material thickness.
If the geometric magnification technique (see 7.7) is applied with > 1.2, then the duplex wire 101 (ISO 19232- 5) shall be used on all production radiographs.
The duplex wire 101 shall be positioned tilted by a few degrees (2 to 50) to the digital rows or columns of the digital image. If the lQI is positioned at 45° to the digital lines or rows the obtained 101 number shall be reduced by one.ISO 17363-2-2013 pdf free download.
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