Table of Contents

Abstract

Provides requirements for use by purchasers and manufacturers of steel pipeline systems, for external protection of pipeline systems against corrosion, by a method of annular or laterally extruded layer of high-density polyethylene over a sealant layer. Operating temperatures are in the range of -20°C to 55°C.
RECONFIRMATION NOTICE
Technical Committee ME-038 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 25 November 2015.
Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 18 May 2016.
The following are represented on Technical Committee ME-038:
APGA Research and Standards Committee
Australasian Corrosion Association
Australian Industry Group
Australian Institute of Petroleum
Australian Petroleum Production and Exploration Association
Australian Pipelines and Gas Association
Department of Industry, Skills and Regional Development (NSW)
Department of Mines and Energy (NT)
Department of Mines and Petroleum (WA)
Department of Natural Resources and Mines (QLD)
Department of State Development (SA)
Energy Networks Association
Energy Safe Victoria
Gas Association of New Zealand
New Zealand Institute of Gas Engineers
Welding Technology Institute of Australia
Worksafe New Zealand

Scope

This Standard specifies requirements for external protection against corrosion of pipeline systems, whereby a sealant layer is interposed between the pipe and the extrudate of high-density polyethylene, applied using annular or lateral extrusion techniques, to comprise the external coating.
Materials complying with this Standard are intended for use where the pipe temperature during operation is in the range of -20°C to +55°C. Guidance is provided on selection and testing of the coating where elevated temperatures may be encountered during storage, stockpiling or construction. The performance of the coating at high and low temperatures may not be as reflected by tests carried out at ambient temperatures. For example, mastic creep and penetration, and coating system peel strength and cathodic disbonding resistance may not be as at ambient temperatures.
The coating is intended for use in applications where it is not subject to weather or ultraviolet light exposure. A safe period of 12 months of weather exposure after manufacture is allowed for completion of the installation of the pipeline system.
NOTES:
1 Guidelines for purchasers on information that should be supplied by the purchaser and those variables that should or may be agreed upon at the time of inquiry or order are given in Appendix A.
2 For submerged arc welded pipe, additional consideration should be given to air entrapment along the length of the weld and localised stress on the polyethylene coating.
Methods for demonstrating compliance with this Standard are given in Appendix B. Coatings applied over galvanized pipe shall comply with the requirements of Appendix C.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 10/06/2016. This standard has been reconfirmed in Australia in 2016 and remains current in New Zealand. Reconfirmation Notice 10/06/2016
Pages
ISBN
Committee	ME-038
Supersedes	AS 1518-1979 DR 00185 CP