BS EN 15698-1:2009 District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene
This European Standard for District Heating Twin Pipes, specifies requirements and test methods for straight
lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks,
comprising two steel service pipes from DN 15 to DN 250, rigid polyurethane foam insulation and one cylindrical
outer casing of polyethylene. The pipe assembly may also include the following additional elements: Measuring
wires, spacers and diffusion barriers.
This standard applies only to insulated twin pipe assemblies, for continuous operation with hot water at various
temperatures up to 120 °C and occasionally with a peak temperature up to 140 °C.
The estimation of expected thermal life with continuous operation at various temperatures is outlined in Annex B of
EN 253.
BS EN 15698-1:2009 Referenced Document
EN 253:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene (Incorporates Amendment A1: 2013)
EN ISO 3126:2005 Plastics piping systems - Plastics components - Determination of dimensions ISO 3126:2005
BS EN 15698-1:2009 history
2019BS EN 15698-1:2019 District heating pipes. Bonded twin pipe systems for directly buried hot water networks - Factory made twin pipe assembly of steel service pipes, polyurethane thermal insulation and one casing of polyethylene
2009BS EN 15698-1:2009 District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene