BS EN 253:2009+A2:2015
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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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
Hardcopy , PDF
04-11-2019
English
31-10-2015
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
RHE/9
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| DocumentType |
Standard
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0
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| PublisherName |
British Standards Institution
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| Status |
Superseded
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This European Standard specifies requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks, comprising a steel service pipe from DN15 to DN1200, rigid polyurethane foam insulation and an 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 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 AnnexB.
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