BS EN ISO 20769-1:2018 Non-destructive testing. Radiographic inspection of corrosion and deposits in pipes by X - and gamma rays. Tangential radiographic inspection

BS EN ISO 20769-1:2018

Non-destructive testing. Radiographic inspection of corrosion and deposits in pipes by X - and gamma rays. Tangential radiographic inspection

Status : Current   Published : November 2018

Format
PDF

Format
HARDCOPY



What is this standard about?

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 steel pipes for service induced flaws such as corrosion pitting, generalized corrosion and erosion. Besides its conventional meaning, “pipe” as used in this document is 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 can 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 with the source:

a) on the pipe centre line; and

b) offset from pipe centre line by the pipe radius.

ISO 20769-2 covers double wall radiography, and note that the double wall double image technique is often combined with tangential radiography with the source on the pipe centre line.

This document applies to tangential radiographic inspection using industrial radiographic film techniques, computed radiography (CR) and digital detector arrays (DDA).




Standard NumberBS EN ISO 20769-1:2018
TitleNon-destructive testing. Radiographic inspection of corrosion and deposits in pipes by X - and gamma rays. Tangential radiographic inspection
StatusCurrent
Publication Date08 November 2018
Normative References(Required to achieve compliance to this standard)ISO 11699-1, ISO 19232-5, ISO 9712, ISO 16371-1, ISO 11699-2
Informative References(Provided for Information)EN 12679, ISO 9712, EN 12543-4, ISO 16371-2, EN 12543-1, ISO 19232-1, ISO 5576, ASTM E2002, ISO 14096-2, ISO 19232-3, ISO 5579, EN 12543-3, ISO 5580, EN 12543-2, ISO 19232-4, ANSI 36.1, ISO 19232-2, EN 12543-5, ISO 17636-1:2013
ReplacesBS EN 16407-1:2014
International RelationshipsEN ISO 20769-1:2018,ISO 20769-1:2018
Draft Superseded By17/30361503 DC
DescriptorsGamma-radiation, Flaw detection, Testing conditions, Copper alloys, Test equipment, Density, Thickness, Radiographic film, X-rays, Nickel alloys, Metals, Shields, Non-destructive testing, Industrial, Radiographic testing, Steels, Marking, Grades (quality)
ICS19.100
23.040.01
Title in FrenchEssais non destructifs. Examen radiographique de la corrosion et des dépôts dans les canalisations, par rayons X et rayons gamma Examen radiographique tangentiel
Title in GermanZerstörungsfreie Prüfung. Durchstrahlungsprüfung auf Korrosion und Ablagerungen in Rohren mit Röntgen- und Gammastrahlen Tangentiale Durchstrahlungsprüfung
CommitteeWEE/46
ISBN978 0 580 98756 4
PublisherBSI
FormatA4
DeliveryYes
Pages46
File Size1.106 MB
Price£240.00


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