Standard NBN EN 17414-3:2020

District cooling pipes - Factory made flexible pipe systems - Part 3: Non bonded system with plastic service pipes; requirements and test methods
Status
:
Active
Publication date
:
8/2020
Languages
:
EN/FR/DE
ICS
:
23.040.99 Other pipeline components
Summary :
This document specifies requirements and test methods for factory made thermally insulated non bonded flexible pipe-in-pipe assemblies for directly buried district cooling distribution systems, comprising a service pipe from DN 15 to DN 200 and a casing of polyethylene. The pipe assembly may also include the following additional elements: measuring wires, spacers and diffusion barriers. This document is intended to be used in conjunction with prEN 17414-1 ). 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 dependent on material specified. The design is based on an expected service life with continuous operation of a minimum 50 years. This document does not cover surveillance systems. NOTE For the transport of other liquids, for example potable water, additional requirements may be applicable.
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