【正文】 6 Performance Requirements ..................................................................................................................9 Chemical resistance ..............................................................................................................................9 Indirect Impact strength ........................................................................................................................9 Resistance to ovalization ......................................................................................................................9 Elongation at break............................................................................................................................. 10 Specific lining resistance................................................................................................................... 10 Abrasion resistance (only for waste water application) ................................................................. 10 Light ageing......................................................................................................................................... 10 Materials in contact with water intended for human consumption ............................................... 11 7 Test Methods....................................................................................................................................... 11 Routine tests ....................................................................................................................................... 11 Performance tests............................................................................................................................... 12 Annex A (informative) Quality assurance ...................................................................................................... 15 General................................................................................................................................................. 15 Performance test。 DN grouping ........................................................................................................ 16 Quality assessment system............................................................................................................... 17 Annex B (informative) Lining process and materials .................................................................................... 18 Lining application process ................................................................................................................ 18 Material properties.............................................................................................................................. 18 Field of use, characteristics of transported waters ........................................................................ 19 Annex C (informative) Packaging ................................................................................................................... 20 Bibliography ..................................................................................................... ................................................ 21 3 BS EN 15655:2020 EN 15655:2020 (E) Foreword This document (EN 15655:2020) has been prepared by Technical Committee CEN/ TC 203 ―Cast iron pipes, fittings and their joints‖, the secretariat of which is held by AFNOR. 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 July 2020, and conflicting national standards shall be withdrawn at the latest by July 2020. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 BS EN 15655:2020 EN 15655:2020 (E) Introduction This standard is in conformity with the general requirements already established by CEN/TC 164 in the field of water supply (. potable water) and CEN/TC 165 in the field of waste water. In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: a) no information is provided as to whether the product may be used without restriction in any of the member states of the EU or EFTA。 b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. 5 BS EN 15655:2020 EN 15655:2020 (E) 1 Scope This European Standard defines the requirements and test methods applicable to factory applied internal polyurethane high duty corrosion protection of buried ductile iron pipes and fittings conforming to EN 545, EN 598 and EN 969 for use at permanent operating temperatures up to 45 176。C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 545, Ductile iron pipes, fittings, accessories and their joints for water pipelines — Requirements and t