ISO 4437-5:2014

Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) — Part 5: Fitness for purpose of the system

ISO 4437-5:2014 specifies the requirements of fitness for purpose of the polyethylene (PE) piping system to be used for the supply of gaseous fuels. It specifies the definitions of electrofusion, socket fusion, butt fusion, and mechanical joints. It specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It specifies the test parameters for the test methods referred to in this part of ISO 4437. In conjunction with ISO 4437‑1, ISO 4437‑2, ISO 4437‑3, and ISO 4437‑4, it is applicable to PE pipes, fittings, valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions: the maximum operating pressure (MOP) is based on the design stress, determined from the compound minimum required strength (MRS) divided by the C factor, and taking into account rapid crack propagation (RCP) requirements; and a temperature of 20 °C is taken as reference temperature for the design basis.

Systèmes de canalisations en matières plastiques pour la d istribution de combustibles gazeux — Polyéthylène (PE) — Partie 5: Aptitude à l'emploi du système

General Information

• Status: Withdrawn
• Publication Date: 12-Jan-2014
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• ICS: 83.140.30 - Plastics pipes and fittings for non fluid use
• Technical Committee: ISO/TC 138/SC 4 - Plastics pipes and fittings for the supply of gaseous fuels
• Drafting Committee: ISO/TC 138/SC 4 - Plastics pipes and fittings for the supply of gaseous fuels
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 14-Feb-2024

Relations

• Revised: ISO 4437-5:2024 - Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 5: Fitness for purpose of the system
• Effective Date: 23-Apr-2020
• Revises: ISO 4437:2007 - Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications
• Effective Date: 29-Jan-2011

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4437-5
First edition
2014-01-15
Plastics piping systems for the supply
of gaseous fuels - Polyethylene (PE) —
Part 5:
Fitness for purpose of the system
Systèmes de canalisations en matières plastiques pour la d istribution
de combustibles gazeux — Polyéthylène (PE) —
Partie 5: Aptitude à l’emploi du système
Reference number
ISO 4437-5:2014(E)
©
ISO 2014

---------------------- Page: 1 ----------------------
ISO 4437-5:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 4437-5:2014(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Fitness for purpose of the system . 2
4.1 Method of preparation of assemblies for testing . 2
4.2 Requirements for fitness for purpose of the system . 3
4.3 Conditioning . 6
4.4 Requirements . 6
4.5 Retest in case of failure at 80 °C . 6
5 Design coefficient . 6
Annex A (informative) Derating coefficients for operating temperatures.9
Annex B (normative) Rapid crack propagation (RCP) resistance of pipe at temperatureless than
0 °C .10
Bibliography .11
© ISO 2014 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 4437-5:2014(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collab
...

DRAFT INTERNATIONAL STANDARD ISO/DIS 4437-5
ISO/TC 138/SC 4 Secretariat: NEN
Voting begins on Voting terminates on

2012-09-16 2012-12-16
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION    МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ    ORGANISATION INTERNATIONALE DE NORMALISATION


Plastics piping systems for the supply of gaseous fuels —
Polyethylene (PE) —
Part 5:
Fitness for purpose
Systèmes de canalisations en matières plastiques pour la distribution de combustibles gazeux —
Polyéthylène (PE) —
Partie 5: Aptitude à l'emploi
[Revision of third edition (ISO 4437:2007)]
ICS 75.200; 83.140.30









To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.



THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME
STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©  International Organization for Standardization, 2012

---------------------- Page: 1 ----------------------
ISO/DIS 4437-5

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.

ii © ISO 2012 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DIS 4437-5
Contents Page
Foreword. iv
Introduction .v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Fitness for purpose .3
4.1 Method of preparation of assemblies for testing .3
4.1.1 General.3
4.1.2 Butt fusion joints .3
4.1.3 Electrofusion jointing.3
4.1.4 Mechanical joints.3
4.2 Requirements for fitness for purpose .4
4.2.1 General.4
4.2.2 Fitness for purpose of butt fusion joints .4
4.2.3 Fitness
...