【正文】 k, 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。E N DE NOR M A L I S ATI O N EUR OP 196。rteile aus duktilem Gusseisen PolyurethanAuskleidung von Rohren und Formst252。thane des tuyaux et raccords Prescriptions et m233。ISCHE NORM EN 15655 January 2020 ICS 。 BRITISH STANDARD BS EN 15655:2020 Ductile iron pipes, fittings and accessories — Internal polyurethane lining for pipes and fittings — Requirements and test methods ICS 。ENNE EUROP196。rieur en polyur233。cke und Zubeh246。 EUR OP 201。 2020 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15655:2020: E BS EN 15655:2020 EN 15655:2020 (E) 2 Contents Page Foreword..............................................................................................................................................................3 Introduction .........................................................................................................................................................4 1 Scope ......................................................................................................................................................5 2 Normative references ............................................................................................................................5 3 Terms and definitions ...........................................................................................................................5 4 Ordering information .............................................................................................................................7 5 Technical Requirements .......................................................................................................................7 Surface preparation ...............................................................................................................................7 Finished polyurethane lining ................................................................................................................7 Pipe ends ................................................................................................................................................8 Repairs ....................................................................................................................................................8 Marking ...................................................................................................................................................8 Non porosity ...........................................................................................................................................9 Hardness.................................................................................................................................................9 Adhesion.................................................................................................................................................9 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.................................................