ISO 10802:2020
(Main)Ductile iron pipelines — Hydrostatic testing after installation
Ductile iron pipelines — Hydrostatic testing after installation
This document specifies site hydrostatic acceptance tests for installed pressure and non-pressure ductile iron pipelines used for conveying water and other liquids. It does not cover testing of pipelines for gas. NOTE In this document, all pressures are relative pressures expressed in bars, where 1 bar = 0,1 MPa.
Canalisations en fonte ductile — Essais hydrostatiques après pose
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 10802
Second edition
2020-08
Ductile iron pipelines — Hydrostatic
testing after installation
Canalisations en fonte ductile — Essais hydrostatiques après pose
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and Definitions . 1
4 Safety . 3
5 Preparation of the test sections . 4
5.1 General conditions . 4
5.2 Pressure pipelines . 4
5.2.1 General. 4
5.2.2 Anchoring and closures . 4
5.2.3 Partial backfilling before testing . 6
5.2.4 Filling with water and air venting . 6
5.3 Non-pressure pipelines . 9
6 Pressure testing procedure . 9
6.1 General . 9
6.2 Preliminary operations for pressure pipelines .10
6.3 Preliminary test for pressure pipelines .11
6.4 Main pressure test .12
6.4.1 General.12
6.4.2 Water loss test .12
6.4.3 Pressure drop test — Direct reading (PDDR) .13
6.5 Determination of acceptance .13
6.6 Testing of the complete pipeline .13
6.7 Non-pressure pipelines .13
7 Acceptance criteria .14
7.1 Pressure pipelines .14
7.1.1 Water loss test — Falling pressure and water loss test — Constant pressure .14
7.1.2 Pressure drop test — Direct reading .14
7.2 Non-pressure pipelines .14
Annex A (informative) Test methods description and comparison .15
Annex B (informative) Example of hydrostatic testing report .17
Annex C (informative) Pressure pairing of component pressures and pipeline pressures .19
Bibiliography .20
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 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings,
Subcommittee SC 2, Cast iron pipes, fittings and their joints.
This second edition cancels and replaces the first edition (ISO 10802:1992), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— add the safety instructions for hydrostatic testing operation;
— add hydrostatic test flow chart;
— add several diagrams for comprehensiveness;
— add pressure drop test method, as alternative of constant pressure test.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
Introduction
Ductile pipelines include many components and jointing solutions to offer a reliable service under the
worst situations (high pressure variations, earthquakes, etc.) hence the need of a secure hydrostatic
pressure test after having taken into account possible movements of the components.
Every pipeline which has been constructed undergo a water pressure test to ensure the integrity of
pipes, joints, fittings and other components such as anchor blocks.
Normally it is made as the assembly of the pipeline progresses, according to the proposed methodology
consisting of 3 phases:
— preliminary operations to prepare the test;
— preliminary test to stabilize the pipeline and to evacuate air in the pipeline;
— main pressure test to assess the water tightness of a pipeline at test pressure; it can be done
either by a:
— water loss test: Falling pressure - WLFP or constant pressure – WLCP methods, or
— pressure drop test - Direct reading – PDDR method.
Figure 1 summarizes the sequence to follow during the test.
Figure 1 — Testing procedure flow chart
INTERNATIONAL STANDARD ISO 10802:2020(E)
Ductile iron pipelines — Hydrostatic testing after
installation
1 Scope
This document specifies site hydrostatic acceptance tests for installed pressure and non-pressure
ductile iron pipelines used for conveying water and other liquids.
It does not cover testing of pipelines for gas.
NOTE In this document, all pressures are relative pressures expressed in bars, where 1 bar = 0,1 MPa.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2531, Ductile iron pipes, fittings, accessories and their joints for water applications
ISO 6708, Pipework components — Definition and selection of DN (nominal size)
ISO 7186, Ductile iron products for sewerage applications
ISO 7268, Pipe components — Definition of nominal pressure
ISO 10804, Restrained joint systems for ductile iron pipelines — Design rules and type testing
ISO 16631, Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE)
piping systems, for water applications and for plastic pipeline connections, repair and replacement
1)
ISO 21051 , Construction and installation of ductile iron pipeline system
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in ISO 6708, ISO 7268 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
allowable operating pressure
PFA
P
FA
maximum internal pressure, excluding surge, that a component can safely withstand in permanent service
[SOURCE: ISO 2531:2009, 3.2, modified — The symbol has been added.]
1) Under preparation. Stage at the time of publication: ISO/FDIS 21051:2020.
3.2
allowable maximum operating pressure
PMA
P
MA
maximum internal pressure, including surge, that a component can safely withstand in service
Note 1 to entry: P = 1,2 × P
MA FA
[SOURCE: ISO 2531:2009, 3.17, modified — The term has been changed from "maximum allowable
operating pressure" to "allowable maximum operating pressure"; the symbol and note 1 to entry have
been added.]
3.3
allowable site test pressure
PEA
P
EA
maximum hydrostatic pressure that a newly installed component can withstand for a relatively short
duration, when either fixed above ground level or laid and backfilled underground, in order to measure
the integrity and tightness of the pipeline
Note 1 to entry: This test pressure is different from the system test pressure (3.7) which is related to the design
pressure of the pipeline.
Note 2 to entry: P = 1,2 × P + 5.
EA FA
[SOURCE: ISO 2531:2009, 3.3, modified — Note 2 to entry has been added.]
3.4
working pressure
WP
P
W
highest pressure that occurs at a time and a point in the pipeline when operating continuously under
stable conditions, without surge
3.5
maximum working pressure
MWP
P
MW
maximum pressure to which a pipeline is subjected under surge conditions
3.6
maximum design pressure
MDP
P
MD
maximum operating pressure of the system or of the pressure zo
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.