ISO INTERNATIONAL STANDARD 13255 First edition 2010-05-01 Thermoplastics piping systems for soil and waste discharge inside buildings Test method for airtightness of joints Systemes decanalisationsthermoplastiquespourévacuationdes eaux- vannesetdes eauxuséesa Iinterieurdesbatiments-Methode d'essaideI'étancheitedes assemblagesaI'air Reference number ISO13255:2010(E) @ISO2010 Copyright Intemational Organization for Standardization Not for Resale vithout license from IHS ISO 13255:2010(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 non-governmental, in liaison with IsO, also take part in the work. IsoO collaborates closely ywith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. 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. ISO13255waspreparedbyTechnical CommitteeISO/TC138,Plasticspipes,fittingsandvalvesforthe drainage). ili Not for Resale a Not fr Resale INTERNATIONALSTANDARD ISO13255:2010(E) Thermoplastics piping systems for soil and waste discharge inside buildings Test method for airtightness of joints Scope This International Standard specifies a method for testing the airtightness of joints of thermoplastics piping systems for soil and waste discharge inside buildings. 2 Principle A test assembly of pipes and/or fittings is subjected to a given internal air pressure for a given time period during which the leaktightness of the joint is verified by inspection. NOTE It is assumed that the following test parameters are set by the referring standard: a)the sampling procedure (see 4.1 and Clause 5); b) the number of test pieces (see 4.2). 3 Apparatus 3.1End-sealing devices, having a size and using a sealing method that are appropriate to the type of joint assembly under test. The devices shall be restrained in such a manner that does not exert longitudinal forces on the joint assembly and prevents the devices or the assembly under test from separating under pressure. The mass of the devices shall not be permitted to influence the angular deflection to be applied (see 5.8). 3.2Air pressure source, connected via a shut-off valve to one end of at least one end-sealing device, and capable of maintaining the required pressure within ± 10 % (see Clause 5). 3.3Pressure-measuring device, capable of checking conformity to the required test pressure (see 3.2 and Clause 5), 3.4Water supply and outlet devices, each connected via a shut-off valve to at least one end-sealing device to admit water to the appropriate level within the test piece (see Figure 1). Copyright Inter ISO 13255:2010(E) 4 Test pieces 4.1Preparationoftestpieces The test piece shall comprise an assembly of (a) pipe section(s) (with or without sockets) and/or fitting(s), one part of the test piece being a pipe or a fitting with a spigot mounted in two clamped blocks (see Figure 1). Dimensions in millimetres 500 2 5 3 Key fixed points 2 sealing plug with water outlet and end restraint (see 3.1) 3 loosebushesenablingall sizesofpipestobeaccommodatedonthesametestfixture fixed component 5 sealing plug with water inlet, air outlet and end restraint Water inlet. b Air outlet. Level of water for test (half of pipe internal bore) Water outlet. Direction of movement for angular deflection, if applica