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Normas DIN – AENOR
DIN EN ISO 20769-1:2017-09

DIN EN ISO 20769-1:2017-09

Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 1: Tangential radiographic inspection (ISO/DIS 20769-1:2017); German and English version prEN ISO 20769-1:2017 / Note: Date of issue 2017-08-04

Essais non destructifs - Examen radiographique de la corrosion et des dépôts dans les canalisations, par rayons X et rayons gamma - Partie 1: Examen radiographique tangentiel (ISO/DIS 20769-1:2017); Version allemande et anglaise prEN ISO 20769-1:2017 / Attention: Date de parution 2017-08-04

Zerstörungsfreie Prüfung - Durchstrahlungsprüfung auf Korrosion und Ablagerungen in Rohren mit Röntgen- und Gammastrahlen - Teil 1: Tangentiale Durchstrahlungsprüfung (ISO/DIS 20769-1:2017); Deutsche und Englische Fassung prEN ISO 20769-1:2017 / Achtung: Erscheinungsdatum 2017-08-04

Fecha Anulación:
2018-12 /Withdrawn
Equivalencias internacionales:

ISO/DIS 20769-1 (2017-07)

prEN ISO 20769-1 (2017-08)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 20769-1:2018-12

Resumen:
This document specifies fundamental techniques of film and digital radiography with the object of enabling satisfactory and repeatable results to be obtained economically. The techniques are based on generally recognized practice and fundamental theory of the subject. This document applies to the radiographic examination of pipes in metallic materials for service induced flaws such as corrosion pitting, generalized corrosion and erosion. Besides its conventional meaning, "pipe" as used in this standard should be understood to cover other cylindrical bodies such as tubes, penstocks, boiler drums and pressure vessels. Weld inspection for typical welding process induced flaws is not covered, but weld inspection is included for corrosion/erosion type flaws. The pipes may be insulated or not, and can be assessed where loss of material due, for example, to corrosion or erosion is suspected either internally or externally. This document covers the tangential inspection technique for detection and through-wall sizing of wall loss, including: a) with the source on the pipe centre line, and b) with the source offset from it by the pipe radius. This document applies to tangential radiographic inspection using industrial radiographic film techniques, computed digital radiography (CR) and digital detector arrays (DDA).
Keywords:
Corrosion, Corrosion tests, Definitions, Deposit, Digital, Digital recording methods, Faulty material, Films, Flexible pipes, Gamma-ray, Material defect, Non-destructive testing, Pipe walls, Pipelines, Pipes, Radiogram, Radiographic film, Radiographic testing, Radiography, Steel pipes, Tangential, Testing, Thickness, Tubes, Welded joints, Welds, X-rays
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