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BRITISH STANDARD BS EN 12772003 Plastics piping systems Thermoplastics piping systems for buried non-pressure applications Test s for leaktightness of elastomeric sealing ring type joints The European Standard EN 12772003 has the status of a British Standard ICS 23.040.80 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- BS EN 12772003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 21 April 2004 BSI 21 April 2004 ISBN 0 580 43669 1 National foreword This British Standard is the official English language version of EN 12772003. It supersedes BS EN 12771996 which is withdrawn. Clause 6c does not imply an additional deflection for those cases where the referring standard specifies a deflection. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic Piping Systems, to Subcommittee PRI/88/4, Pressure, which has the responsibility to A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests ined; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1277 December 2003 ICS 23.040.80Supersedes EN 12771996 English version Plastics piping systems - Thermoplastics piping systems for buried non-pressure applications - Test s for leaktightness of elastomeric sealing ring type joints Systmes de canalisations en plastiques - Systmes de canalisations thermoplastiques pour applications enterres sans pression - Mthodes dessai dtanchit des assemblages bague dtanchit en lastomre Kunststoff-Rohrleitungssysteme - Erdverlegte Rohrleitungssysteme aus Thermoplasten fr drucklose Anwendungen - Prfverfahren fr die Dichtheit von elastomeren Dichtringverbindungen This European Standard was approved by CEN on 3 March 2003. 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 Management Centre 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 12772003 E Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- EN 12772003 E 2 Foreword This European Standard EN 12772003 has been prepared by Technical Committee CEN /TC 155, “Plastics piping systems and ducting systems“, the secretariat of which is held by NEN. 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 June 2004,, and conflicting national standards shall be withdrawn at the latest by June 2004. Annex A is normative. This document supersedes EN 12771996. The modifications are The deflection of the socket is now permitted to be greater than specified if by deflecting the spigot to the specified amount the socket, without applying load to it, is deflected to more than specified. The reason is that experience with testing large diameter pipes in accordance with the 1996 version has shown that for some pipe designs a deflection of 10 of the spigot resulted in a deflection larger than 5 of the socket without applying any load to it. This is the major reason for the revision. A support for the profiles under the deflection device, see Figure 2, are specified in cases where there is a risk that the profiles are deflected too much when deflecting the spigot or socket. Figure 4 has been added to clarify the description of the deflection devices. The procedure for determining and applying the deflection has been described in more details, see 6.2. A number of editorial changes including a more logic order of the description of the test equipment and test procedure have been introduced. The material-dependent parameters and/or perance requirements are incorporated in the System Standards concerned. This standard is one of a series of standards on test s, which support System Standards for plastics piping systems and ducting systems. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 12772003 E 3 1 Scope This European standard specifies three basic test pressures for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems. Unless otherwise specified in the referring standard, the s pressures used are the following p1 internal negative air pressure partial vacuum; p2 a low internal hydrostatic pressure; p3 a higher internal hydrostatic pressure. It also describes four test conditions under which the test can be cuted, as follows Awithout any additional diametric or angular deflection; Bwith diametric deflection; Cwith angular deflection; Dwith simultaneous angular and diametric deflection. These conditions can be applied individually or in combination. The applicable selection of the s and the conditions should be specified in the referring standard. 2 Principle A test piece assembled from pipes and/or fittings is subjected to a specific initial internal negative air pressure, p1 followed by a low specific initial internal hydrostatic pressure, p2 and a higher internal hydrostatic pressure, p3. During testing the joint may be subjected to diametric and/or angular deflections. The referring product standard shall specify which of the test pressures and deflection conditions have to be carried out. Each pressure is maintained for a specific period during which the joint is monitored for leakage see clause 6. NOTE 1It is assumed that the following test parameters are set by the standard making reference to this standard a the test pressures, p1 [see item d of 6.1], p2 [see item f of 6.1] and p3 [see item g of 6.1], as applicable, and the percentage of loss of partial vacuum [see item d of 6.1]; b the required diametric and/or angular deflections and their combination with each other and/or the test pressures NOTE 2As a consequence of the revision of EN 12771996 a modification of test parameters given in referring European Standards on thermoplastics underground drainage and sewerage pipes published before this European Standard may be required see annex A. 3 Apparatus 3.1 General The apparatus shall consist of a jig or any other arrangement capable of a applying the specified diametric and/or angular deflection; b applying the specified test pressures, positive or negative; c maintaining the test assembly in the required position throughout the test; d resisting the forces resulting from the mass of the water in the test assembly and from the applied hydrostatic test pressures during the test period. The apparatus shall not otherwise support the joint against the internal test pressure. Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 12772003 E 4 A typical arrangement, allowing angular and diametric deflection, is shown in Figure 1. 3.2 Apparatus The apparatus shall include the following items which all shall be capable of resisting the forces and pressures generated during the test. 3.2.1End sealing devices, having a size and using a sealing appropriate to seal the non-jointed ends of the test assembly. The devices shall be restrained in a manner that does not rt longitudinal forces on the joint at positive pressures; 3.2.2Hydrostatic pressure source, connected to one of the sealing devices, or to the test piece, and capable of applying and maintaining the specified pressure [see items f and g of 6.1]; 3.2.3Negative air pressure source, connected to one of the sealing devices, or to the test piece, and capable of applying and maintaining the specified internal negative air pressure for the specified time. See item d of 6.1; 3.2.4Arrangement, capable of venting air from the assembly; 3.2.5Pressure measuring devices, capable of checking conity to the specified test pressure see item d, f and g of 6.1. When testing with diametric deflection is required the following items shall also be included 3.2.6Mechanical or hydraulic device, capable of applying the necessary diametric deflection to the spigot [see item b of 6.1] and acting on a beam which is free to move in the vertical plane square to the axis of the pipe. For pipes with a diameter equal to or greater than 400 mm, each beam can be elliptically shaped to suit the expected shape of the pipe when deflected as required, see Figure 4. The length of the beam or the curved part of the beam shall be greater than the contact area with the deflected spigot. The width, b1, see Figure 1, shall depend upon the external diameter, de, of the pipe as follows b1 100 mm for de ≤ 710 mm; b1 150 mm for 710 mm 1000 mm. 3.2.7Mechanical or hydraulic device, capable of applying the necessary diametric deflection to the socket [see item b of 6.1] and acting on a beam which is free to move in the vertical plane square to the axis of the socket. The length of the beam or the curved part of the beam shall be greater than the contact area with the deflected socket. For pipes with a diameter equal to or greater than 400 mm, each beam may be elliptically shaped to suit the expected shape of the socket when deflected as required, see Figure 4; The width, b2, shall depend upon the external diameter, de, of the pipe as follows b2 30 mm for de ≤ 110 mm; b2 40 mm for 110 mm 315 mm. When there is a risk that the stiffening elements profiles of a structured wall pipe or socket will deflect more than 0,1 times the profile height, the clamps shall be modified so they will come into contact with the pipe wall between the profiles when the profile is deflected to between 0,9 times and 0,95 times the profile height, see Figure 2. Such modifications shall be made from wood or less flexible materials. Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS LicenseeBureau Veritas/5959906001, 11/08/2004 005916 MST Questions or comments about this message please call the Document Policy Group at 303-397-2295. --,,,,,,,,,,,,,,,,,,--,,,,,,,--- w w w . b z f x w . c o m EN 12772003 E 5 Key GVacuum or pressure gauge EElliptical beam when applicable WAdjustable support PPipe or fitting with spigot end RPipe or fitting with socket SSocket support VConnection to pressure source αtotAngular deflection applied b1, b2Width of clamp see 3.2.6 and 3.2.7 LLength of spigot-ended pipe or fitting, where L ≥ de or L ≥ 1000, whichever is the greater, in millimetres L1Distance between socket mouth and clamp Figure 1 Typical arrangement for applying diametric distortion and angular deflection Key 1Modified loading plate hpConstruction height HpProfile height of the loading plate; 0,9hp ≤ Hp ≤ 0,95hp Figure 2 Example of modified loading plate 4 Test pieces The test piece shall comprise an assembly of a pipe sections and/or fittings including at least one elastomeric sealing ring joint. The joint to b
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