untitled BRITISH STANDARD BS EN 15189 2006 Ductile iron pipes, fittings and accessories — External polyurethane coating for pipes — Requirements and test methods The European Standard EN 15189 2006 ha[.]
BRITISH STANDARD Ductile iron pipes, fittings and accessories — External polyurethane coating for pipes — Requirements and test methods The European Standard EN 15189:2006 has the status of a British Standard ICS 23.040.01; 25.220.60 12&23 2,5 % 6.4 Tensile test 7.2.4 Specific coating resistance in 0,1 M NaCl > 108 Ωm2 6.5 Resistivity test towel method or vessel method 7.2.5 Ratio of coating resistance > 0,8 6.5 Res.100 d/ res 70d 7.2.5 EN 15189:2006 (E) controlling the manufacturing process by routine tests according to Table A.2: Table A.2 — Routine tests Nr parameters requirements Clause Tests frequency Clause Surface preparation SA 2,5 of EN ISO 8501-1 5.1 Visual 100 % 7.1.1 Surface roughness Ra > 10 µm 5.1 EN ISO 8503-1 1/shift 7.1.1 Appearance and continuity Uniform and smooth 5.2.1 Visual 100 % 7.1.2 Minimum coating (x – σ) > 700 microns 5.2.2 Non destructive instruments 1/shift 7.1.3 thickness error ± 10 % Pipe ends painted parts Length depending on type of socket 5.3 Appropriate measures 10 % 7.1.4 Repairs Manufacturer’s written instructions 5.4 High voltage test 100 % 7.1.5 Marking legible and durable 5.5 Visual 10 % 7.1.6 Non-porosity No electrical break through at required test voltage 5.6 High voltage test instrument per 000 pipes 7.1.7 Hardness > 70 Shore D 5.7 Hardness test 1/shift 7.1.8 10 Adhesion > MPa at 23 °C 5.8 Punch separation method acc EN ISO 4624 per 000 pipes 7.1.9 A.2 Performance test; DN grouping In order to ensure their fitness for purpose in the field of heavy-duty corrosion protection, all the pipes shall fulfil the technical requirements of clause and performance requirements of clause In order to demonstrate this, the performance tests of clause shall be performed on at least one DN for each of the groupings given in Table A.3 One DN is representative of a grouping when the performances are based on the same design parameters and coating process throughout the size range If a grouping covers products of different designs and/or manufactured by different processes, the grouping shall be sub-divided If for a manufacturer a grouping contains only one DN, this DN may be considered as part of the adjacent grouping provided that it is of identical design and manufactured by the same process Table A.3 DN groupings Preferred DN in each grouping 40 to 500 600 to 000 200 000 Where tests have been performed in accordance with the requirements and test methods of this standard (prior to the adoption of the standard) these tests results may be taken into account for the purpose of initial type testing A.3 Quality assessment system The manufacturer shall control the quality of his or her products during their manufacture by a system of process control in order to comply with the requirements of this standard Wherever possible, statistical sampling techniques shall be used NOTE A quality system conforming to the requirements of EN ISO 9001, and made specific to the requirements of this standard, is considered to satisfy the requirements of this Annex 15 EN 15189:2006 (E) Annex B (normative) Coating application process B.1 General The pipe shall be heated to a temperature within the tolerances recommended by the coating material provider or manufacturer The coating shall be applied to the full length of each pipe: coating of the spigot and the socket, with epoxy or polyurethane; coating of the pipe barrel with polyurethane During the coating and curing periods, the coated pipe shall be handled with due care in order to avoid any damage to the coating After coating cure, the pipe shall be cooled to facilitate the inspection Repairs within the plant are acceptable They are made under the manufacturer's responsibility The manufacturer shall select the method and process to be used and establish a written repair procedure B.2 material properties B.2.1 General All coating materials purchased or used under this specification shall be packaged in suitable and approved containers These containers shall be plainly marked with the name of the manufacturer, type of material and batch or lot number where applicable Bulk shipment may be allowed provided the above information is included in the bill of loading The coating materials shall be packaged in containers suitable to keep the contents clean and dry during handling, shipping and storage Storage and handling conditions shall be in accordance with the manufacturer's written recommendations Precautions shall be taken during handling, shipping and storage of all materials to prevent damage to the containers that would result in contamination of the coating materials All contaminated or otherwise damaged materials shall be discarded B.2.2 Polyurethane The polyurethane used shall be a solvent free two-component system Polyurethane, mineral fillers, pigments and additives shall be selected in order that the final product complies with the performance requirements given in clause of this standard B.2.3 Epoxy resin Depending on the method of application, the epoxy resin used shall be: 16 solvent free two-component liquid, for spray application; EN 15189:2006 (E) powder, for electrostatic spraying Mineral fillers, pigments and additives shall be selected in order that the final product complies with the performance requirements given in clause of this standard 17 EN 15189:2006 (E) Annex C (informative) Packaging In order to prevent damage to the Polyurethane coating suitable mechanical protection should be provided, e.g by end caps, wooden saddles etc 18