Full ring ovalization test for determining the susceptibility to cracking of linepipe steels in sour service. Test method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-06-2016

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Samples
8 Surface preparation
9 Procedure for test specimens with internal loading
10 Expression of results
Annexes
Annex A (normative) - Ultrasonic examination of pipe,
        plate and welds during accelerated laboratory
        tests
Annex B (normative) - Ring loading
Annex C (informative) - Typical internal and external
        load application rigs for use in the full ring test
Annex D (normative) - Chemistry of test solutions
Annex E (informative) - Analysis of test solution - iodimetric
        titration procedure
Annex F (informative) - Illustrated summary of the
        full ring test procedure
Annex G (informative) - Hydrogen sulfide (H[2]s)
        health and safety considerations
Annex H (informative) - Sample identification and
        test record, Form 1
Annex I (informative) - Sample identification and
        test record, Form 2
Annex J (informative) - Acceptance criteria
Annex K (informative) - Sulfide stress corrosion
        (SSC) and hydrogen induced cracking (HIC)
Annex L (informative) - Explanatory notes on test
        method: Galvanic Coupling
Annex M (informative) - Modified test procedure
        for externally loaded test
        specimens (Diameter <12 in. [305 mm])
Annex N (informative) - Magnetic particular inspection
        (MPI) procedure
Bibliography

Provides a method for determining the susceptibility to cracking of steel pipes in sour service.

This British Standard gives a method for determining the susceptibility to cracking of steel pipes in sour service.

This British Standard utilizes a tubular specimen comprising a full circumferential ring. The test method applies to any pipe with or without seam (longitudinal or spiral) or girth weld (with or without filler).

NOTE1 The specimen is usually a pipe but can also consist of flange neck or section of a bend, or other tubular component or a combination of the above.

This British Standard provides guidance on determination of specimen size to ensure it retains residual stresses from manufacture and welding.

NOTE2 See Clause7 for specimen sizes.

The method utilizes ovalization to simulate hoop stress, using mechanical loading on a tubular form. The specimen is subjected to single sided exposure to the sour test environment.

NOTE3 The test also allows measurement of hydrogen permeation rates which can provide useful information, such as highlighting the effects of galvanic coupling between materials of apparent compatibility.

Committee	PSE/17
DevelopmentNote	Supersedes 16/30319903 DC. (07/2016)
DocumentType	Standard
Pages	56
PublisherName	British Standards Institution
Status	Current
Supersedes	16/30319903 DC : 0

BS EN ISO 17640:2010	Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
BS EN ISO 9001:2015	Quality management systems. Requirements
NACE TM 01 77 : 2016	LABORATORY TESTING OF METALS FOR RESISTANCE TO SULFIDE STRESS CRACKING AND STRESS CORROSION CRACKING IN H[2]S ENVIRONMENTS
BS EN ISO 2400:2012	Non-destructive testing. Ultrasonic testing. Specification for calibration block No. 1
BS EN ISO 16811:2014	Non-destructive testing. Ultrasonic testing. Sensitivity and range setting
BS EN ISO 8044:2015	Corrosion of metals and alloys. Basic terms and definitions
BS EN ISO 11666:2010	Non-destructive testing of welds. Ultrasonic testing. Acceptance levels
BS EN ISO 9712:2012	Non-destructive testing. Qualification and certification of NDT personnel
BS EN ISO 15156-3:2015	Petroleum and natural gas industries. Materials for use in H2S-containing environments in oil and gas production Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
BS EN ISO 16810:2014	Non-destructive testing. Ultrasonic testing. General principles
BS EN ISO 9002:1994	Quality systems. Model for quality assurance in production, installation and servicing
BS EN ISO 7963:2010	Non-destructive testing. Ultrasonic testing. Specification for calibration block No. 2

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BS 8701:2016

Current

Table of Contents

Abstract

Scope

General Product Information

Standards Referencing This Book

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