ISO 7511:1999

INTERNATIONAL ISO
STANDARD 7511
First edition
1999-03-15
Plastics piping systems — Glass-reinforced
thermosetting plastics (GRP) pipes and
fittings — Test methods to prove the
leaktightness of the wall under short-term
internal pressure
Systèmes de canalisations en plastiques — Tubes et raccords en
plastiques thermodurcissables renforcés de verre (PRV) — Méthode
d'essai pour établir l'étanchéité de la paroi sous une pression interne
à court terme
A
Reference number
Contents
Page
1  Scope .1
2  Term and definition .1
3  Method A.1
3.1  Principle.1
3.2  Apparatus .1
3.3  Test pieces .2
3.4  Procedure .2
3.5  Test report .2
4  Method B.3
4.1  Principle.3
4.2  Apparatus .3
4.3  Test pieces .3
4.4  Procedure .3
4.5  Test report .3
©  ISO 1999
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Printed in Switzerland
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©
ISO ISO 7511:1999(E)
Foreword
ISO (the International Organization for Standardization) is a world-wide 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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 7511 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and
valves for the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications, in
collaboration with CEN/TC 155, Plastics piping systems and ducting systems.
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©
INTERNATIONAL STANDARD  ISO ISO 7511:1999(E)
Plastics piping systems — Glass-reinforced thermosetting plastics
(GRP) pipes and fittings — Test methods to prove the
leaktightness of the wall under short-term internal pressure
1  Scope
This International Standard specifies two test methods, designated method A and method B, for checking the
leaktightness of glass-reinforced thermosetting plastics (GRP) pipes and fittings under short-term internal pressure.
Method A is a hydraulic test applicable to a pipe under uniaxial stress.
Method B is a pneumatic test applicable to fittings.
NOTE Test methods for the leaktightness of joints or for the resistance of the pipe to long-term hydrostatic pressure are
covered by other standards.
2  Term and definition
For the purposes of this International Standard, the following definition applies:
2.1
leakage
transmission of water or air through the wall of a test piece to an extent detectable visually
3  Method A
3.1  Principle
A test piece in air is subjected to an internal water pressure. The test piece is monitored for evidence of leakage
through the wall of the test piece, within a specified time.
NOTE It is assumed that the following test parame
...