BS EN 17415-1:2020 pdf free.District cooling pipes一Bonded single pipe systems for directly buried cold water networks.Factory made pipe assembly of steel or plastic service pipe,
polyurethane thermal insulation and a casing of polyethylene.
BS EN 17415-1 This document specifies requirements, design and test methods for straight lengths of factory made thermally insulated pipe-in-pipe assemblies for directly buried district cooling distribution systems, comprising a service pipe from DN 15 to DN 1200, rigid polyurethane foam insulation and a casing of polyethylene. The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers. This document applies only to insulated pipe assemblies, for continuous operation with water at various temperatures (1 to 30]。C and a maximum operation pressure of 25 bar. The design is based on an expected service life with continuous operation of a minimum 50 years.For the calculation of the yield strength Rpo 2, at the design temperature in the temperature range up to 30 °C, the value of Rp0,2 for room temperature shall be used for P235TR1, P235TR2 and P235GH.
For higher steel grades than those given in Table 1 the yield strength is defined in their related standards. If such higher steel grades are used for medium pipes, it shall be verified that all components used in the involved part of the system are compatible to the higher yield strength of the pipes.All steel pipes and components used for manufacturing of pipe assemblies under the scope of this document shall as a minimum be delivered to the manufacturer with an inspection certificate 3.1 according to EN 10204. The inspection certificate shall on request be passed on to the client who orders the pipe assemblies. In case a material related inspection certificate 3.1 according to EN 10204 is required by the client who orders the pipe assemblies, this request shall be given whilst placing the order with the manufacturer of the pipe assemblies. NOTE Any later request for provision of such documentation could be too late and possibly can’t be met by the manufacturer, since the manufacturer has to organize the assignment of 3.1 certificates to pipes and part of pipes before starting the production. A length of pipe shall not include a circular weld. ERW pipes supplied shall not include the welds used to join together the strip prior to forming.BS EN 17415-1 pdf download.