BS EN ISO 3503:2015 pdf free.Plastics piping systems—Mechanical joints between fittings and pressure pipes Test method for leaktightness under internal pressure of assemblies subjected to bending.
BS EN ISO 3503 specifies a method for checking the leaktightness under internal pressure of assembled joints between mechanical fittings and plastic pressure pipes when subjected to bending. It defines the calculation method for the average bending radius and how to perform this bending.
Checking of the Ieaktightness under internal pressure is carried out in accordance with the method given in ISO 3458.
This test method is not applicable to fusion-welded joints.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3458, Plastics piping systems — Mechanical joints between fittings and pressure pipes — Test method for leaktightness under internal pressure
3 Principle
Checking of the Ieaktightness of joints of an assembly, containing one test fitting, to which a bending force is applied throughout its free length (L) under internal pressure.
This bending has an average radius calculated from the pipe nominal diameter and pressure.
4 Test parameters and requirements
The test parameters of the standard which refers to this test standard shall be used and the requirements shall be fulfilled. If one or more parameters are not given in the referring International Standard, the ones given in Annex A shall apply.
The following test parameters should be given by the standard which refers to this test standard:
a) test medium;
b) test pressure (bar or MPa);
c) test duration (h);
5 Apparatus
5.1 A suitable apparatus is given in Figure 1.
5.2 Bending gauge (12), having a bearing length, 1, equal to three-quarters of the free length between fittings, i.e. equal to 7,5 times the pipe nominal outside diameter.
This bearing length, I, shall have a bending radius equal to that specified for pipe under test.
5.3 Pressurizing system, in accordance with the specification given in ISO 3458.BS EN ISO 3503 pdf download.