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

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Hardcopy , PDF

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English

Published date

11-08-2018

Publisher

British Standards Institution

This document specifies fundamental techniques of film and digital radiography with the object of enabling satisfactory and repeatable results to be obtained economically

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 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 double wall inspection techniques for detection of wall loss, including double wall single image (DWSI) and double wall double image (DWDI).

Note that the DWDI technique described in this document is often combined with the tangential technique covered in ISO20769‑1.

This document applies to in-service double wall radiographic inspection using industrial radiographic film techniques, computed digital radiography (CR) and digital detector arrays (DDA).

Committee	WEE/46
DocumentType	Standard
ISBN	9780580987571
Pages	38
PublisherName	British Standards Institution
Status	Current
Supersedes	BS EN 16407-2:2014

Standards	Relationship
ISO 20769-2:2018	Identical
EN ISO 20769-2 : 2018	Identical

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BS EN ISO 20769-2:2018

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

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