/home/gencode/cen/en1229/en1229 1 1771 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |[.]
Trang 1|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
BS 2782 : Part 12 : Methods 1223
A and B : 1997
The European Standard EN 1229 : 1996 has the status of a
British Standard
ICS 23.040.20; 23.040.45
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
Plastics piping systems Ð
Glass-reinforced thermosetting
plastics (GRP) pipes and
fittings Ð
Test methods to prove the
leaktightness of the wall under
short-term internal pressure
Trang 2This British Standard, having
been prepared under the
direction of the Sector Board for
Materials and Chemicals, was
published under the authority of
the Standards Board and comes
into effect on
15 January 1997
BSI 1997
The following BSI references
relate to the work on this
standard:
Committee reference PRI/61
Draft for comment 93/313474 DC
ISBN 0 580 26805 5
BS EN 1229 : 1997
Amendments issued since publication
Committees responsible for this British Standard
The preparation of this British Standard was entrusted to Technical Committee PRI/61, Plastics piping systems and components, upon which the following bodies were represented:
British Gas plc British Plastics Federation British Plumbing Fittings Manufacturers' Association British Valve and Actuator Manufacturers' Association Chartered Institution of Water and Environmental Management Department of the Environment (British Board of AgreÂment) Department of the Environment (Building Research Establishment) Department of Transport
Electricity Association Federation of Civil Engineering Contractors Health and Safety Executive
Institute of Building Control Institute of Materials Institution of Civil Engineers Institution of Gas Engineers National Association of Plumbing, Heating and Mechanical Services Contractors Pipeline Industries Guild
Plastics Land Drainage Manufacturers' Association Society of British Gas Industries
Society of British Water Industries Water Companies Association Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and panels:
Association of Consulting Engineers Engineering Equipment and Materials Users' Association Institution of Mechanical Engineers
RAPRA Technology Ltd
Trang 3 BSI 1997 i
Contents
Page
Method
Trang 4ii BSI 1997
BS EN 1229 : 1997
National foreword
This British Standard has been prepared by Technical Committee PRI/61 and is the
English language version of EN 1229 : 1996 Plastics piping systems Ð
Glass-reinforced thermosetting plastics (GRP) pipes and fittings Ð Test methods to prove the leaktightness of the wall under short-term internal pressure, published by
the European Committee for Standardization (CEN)
It is incorporated into BS 2782 Methods of testing plastics : Part 12 : Reinforced
plastics pipes, fittings and valves, as Methods 1223 A and B : 1997, for association
with related test methods for plastics materials and plastics piping components, where Method 1223A corresponds to Method A of EN 1229 (using internal water pressure) and Method 1223B corresponds to Method B of EN 1229 (using internal air pressure) This standard has been prepared for reference by other standards under preparation
by CEN for specification of reinforced plastics piping systems and components It has been implemented to enable experience of the methods to be gained and for use for other fresh applications
It is also for use for the revision or amendment of other national standards as practicable, but it should not be presumed to apply to any existing standard or specification which contains or makes reference to a different test method until that standard/specification has been amended or revised to make reference to this method and adjust any requirements as appropriate
No existing British Standard is superseded by this Method
This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to
4 and a back cover
Warning note This British Standard, which is identical with EN 1229 : 1996, does not
necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc Act 1974 Attention should be paid to any appropriate safety precautions and the method should be operated only by trained personnel
Compliance with a British Standard does not of itself confer immunity from legal obligations.
Trang 5European Committee for Standardization Comite EuropeÂen de Normalisation EuropaÈisches Komitee fuÈr Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
1996 All rights of reproduction and communication in any form and by any means reserved to CEN and its members
Ref No EN 1229 : 1996 E
ICS 23.040.20; 23.040.45
Descriptors: Pipelines, plastic tubes, pipe fittings, reinforced plastics, glass-reinforced plastics, thermosetting resins, partitions, leak tests,
pressure tests, hydraulic tests, pneumatic tests, leaktightness
English version
Plastics piping systems Ð Glass-reinforced thermosetting plastics (GRP) pipes and fittings Ð Test methods to prove the leaktightness
of the wall under short-term internal pressure
SysteÁmes de canalisations en plastique Ð
Tubes et raccords en plastique thermodurcissable
renforce de verre (PRV) Ð
MeÂthode d'essai pour eÂtablir l'eÂtancheÂite de la paroi
sous une pression interne aÁ court terme
Kunststoff-Rohrleitungssysteme Ð Rohre und FormstuÈcke aus glasfaserverstaÈrkten duroplastischen Kunststoffen (GFK) Ð
PruÈfverfahren zur Feststellung der Dichtigkeit der Wand unter Kurzzeit-Innendruck
This European Standard was approved by CEN on 1996-01-04 CEN members are
bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
conditions for giving this European Standard the status of a national standard
without any alteration
Up-to-date lists and bibliographical references concerning such national standards
may be obtained on application to the Central Secretariat or to any CEN member
This European Standard exists in three official versions (English, French, German)
A version in any other language made by translation under the responsibility of a
CEN member into its own language and notified to the Central Secretariat has the
same status as the official versions
CEN members are the national standards bodies of Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
Trang 6Page 2
EN 1229 : 1996
BSI 1997
Foreword
This European Standard has been prepared by
Technical Committee CEN/TC 155, Plastics piping
systems and ducting systems, the secretariat of which
is held by NNI
This standard is based on the draft International
Standard ISO/DIS 7511 Pipes and fittings of glass
reinforced thermosetting plastics (GRP) Ð
Determination of leaktightness Ð Test method,
prepared by the International Organization for
Standardization (ISO) It is a modification of
ISO/DIS 7511 for reasons of applicability to other test
conditions and alignment with texts of other standards
on test methods
The modifications are:
± specifications for detection of water leakage are
deleted;
± test parameters (pressure, time, temperature) are
not specified;
± material-dependent or performance requirements
are not given;
± editorial changes have been introduced
The material-dependent test parameters and/or
performance requirements are incorporated in the
referring standard
This standard is one of a series of standards on test
methods which support System Standards for plastics
piping systems and ducting systems
This European Standard shall be given the status of a
national standard, either by publication of an identical
text or by endorsement, at the latest by December
1996, and conflicting national standards shall be
withdrawn at the latest by December 1996
According to the CEN/CENELEC Internal Regulations,
the national standards organizations of the following
countries are bound to implement this European
Standard: Austria, Belgium, Denmark, Finland, France,
Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom
Trang 7 BSI 1997
1 Scope
This standard specifies two test methods, designated
method A and method B, for rapid testing of 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 pipes and
fittings For pipes it is intended to be complementary
to method A, not an alternative test
NOTE Test methods for the leaktightness of joints or for the
pipe's resistance to long-term hydrostatic pressure are covered by
other standards.
2 Definition
For the purposes of this standard, the following
definition applies:
leakage
The transmission of water or air through the wall of
the test piece
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, e.g signs of
weeping or transfer of an indicator, within a specified
time
NOTE It is assumed that the following test parameters are set by
the standard making reference to this standard:
a) the test pressure and time taken to achieve it (see 3.2.1
and 3.4.2);
b) the number of test pieces to be used (see 3.3);
c) the period for which pressure is applied (see 3.4.3).
3.2 Apparatus
3.2.1 Pressurizing system, capable of maintaining for
the duration of the test a specified hydraulic pressure
measured at the top of the test piece to an accuracy
within 22 % and +5 % The water used to pressurize
the test piece may contain an indicator, such as a dye,
to assist detection of any transfer through the wall of
the test piece
3.2.2 Pressure measuring device, of sufficient
accuracy to enable conformity to 3.2.1.
3.2.3 End-sealing devices, such as end caps, internal
stoppers or inflatable bags depending on the diameter
of the test piece Means shall be provided to prevent
movement of the sealing device under pressure Such
devices shall not transmit end thrust to the test piece
3.2.4 Test piece support, if necessary, to minimize
deformation of the test piece due to its mass and its contents
This support shall not constrain the test piece circumferentially or longitudinally
3.3 Test pieces 3.3.1 The test piece(s) shall comprise a pipe or a
piece taken from a pipe, as specified in the referring standard
3.3.2 The number of test pieces shall be as specified
in the referring standard
3.4 Procedure WARNING: Attention is drawn to dangers associated
with pressure and the need to apply all necessary precautions to prevent injury to the personnel concerned
3.4.1 Attach the end-sealing devices to the test piece
and fill the test piece with water, expelling all air Attach the test piece to the pressurizing system, being sure to avoid entrapment of air
3.4.2 Increase the hydrostatic pressure continuously,
so that the specified test pressure is reached in the time specified in the referring standard
3.4.3 Maintain the test pressure for the time specified
in the referring standard or until leakage is observed, whichever occurs first Record any evidence of leakage
through the wall of the test piece (see 3.1 and 3.2.1)
and the period after which it was observed
3.5 Test report
The test report shall include the following information: a) a reference to this standard and the referring standard;
b) the full identification of the pipe tested;
c) the number of test pieces;
d) the method of test used, i.e method A;
e) the test pressure, in bars;
f) the duration of the test or time to failure, in minutes;
g) the occurrence or absence of leakage;
h) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard;
i) the date of test
Trang 8Page 4
EN 1229 : 1996
BSI 1997
4 Method B
4.1 Principle
A test piece in either air or water is subjected to an
internal air pressure The test piece is monitored for
evidence of leakage within a specified time
NOTE It is assumed that the following test parameters are set by
the standard making reference to this standard:
a) the test pressure and time taken to achieve it (see 4.2.1
and 4.4.2);
b) the number of test pieces to be used (see 4.3);
c) the period for which pressure is applied (see 4.4.3).
4.2 Apparatus
4.2.1 Pressurizing system, capable of applying and
maintaining to an accuracy of within±2 % the internal
air pressure specified in the referring standard and
fitted with an automatic pressure-limiting device
4.2.2 Pressure measuring device, of sufficient
accuracy to enable conformity to 4.2.1.
4.2.3 End-sealing devices, such as end caps, internal
stoppers or inflatable bags depending on the diameter
of the test piece Means shall be provided to prevent
movement of the sealing device under pressure Such
devices shall not transmit end thrust to the test piece
4.3 Test pieces
4.3.1 The test pieces shall comprise either of the
following as specified in the referring standard:
a) a pipe;
b) a piece taken from a pipe;
c) a fitting
4.3.2 The number of test pieces shall be as specified
in the referring standard
4.4 Procedure WARNING: Attention is drawn to dangers associated
with pneumatic pressure and the need to apply all necessary precautions to prevent injury to the personnel concerned For reasons of safety it is recommended that the test pressure does not exceed 1 bar unless otherwise specified by the referring standard
4.4.1 Assemble the end-sealing devices (see 4.2.3) to
the test piece ensuring that no end thrust is transmitted Connect the test piece to the pressurizing system through one of the end-sealing devices Either paint the outer surface of the test piece with a solution
of soap or a similar agent, if the test is performed in air, or immerse the test piece completely in water
4.4.2 Pressurize the test piece to the specified test
pressure (see 4.1).
4.4.3 Maintain the test pressure for the time specified
(see 4.1) or until leakage is observed, whichever
occurs first
Inspect for and record any bubbling caused by air escaping through the wall of the test piece
4.5 Test report
The test report shall include the following information: a) a reference to this standard and the referring standard;
b) the full identification of the pipe or fitting tested; c) the number of test pieces;
d) the method of test used, i.e method B;
e) the test pressure, in bars;
f) the duration of the test or the time to failure
(see 4.4.3), in minutes;
g) the occurrence or absence of leakage;
h) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard;
i) the date of test
Trang 10389 Chiswick High Road
London
W4 4AL
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
BSI Ð British Standards Institution
BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter
Revisions
British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions
It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400
BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards
Buying standards
Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001
In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested
Information on standards
BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111
Fax: 020 8996 7048
Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001
Copyright
Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract 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 from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained
If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager
Tel: 020 8996 7070