ČSN P CEN/TS 17889 (383388)

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Pipelines and its parts for dictrict heat

Die Annotation des Normtextes ČSN P CEN/TS 17889 (383388):

This document specifies classification, general requirements and test methods for flexible, factory made, buried district heating pipe systems with thermoplastic reinforced service pipes (TRSP).

The factory made bonded or non-bonded flexible pipe systems covered by this document consist of:

• - a thermoplastic reinforced service pipe, which consists of an inner layer made of PE-Xa, a thermoplastic intermediate layer, a reinforcement layer made of para-aramid fibres, an outer thermoplastic layer and a diffusion barrier layer, all with bonded structure;
• - a thermal insulation layer;
• - a casing made of PE.

Depending on the temperature profile, this document is applicable to a maximum operating temperature of 115 °C and maximum operating design pressure up to 1,6 MPa.

The pipe systems are designed for a service life of at least 30 years.

This document does not apply to cover surveillance systems.

NOTE - For higher temperatures or for the transport of other fluids, for example potable water, additional requirements and testing is needed. Such requirements are not specified in this document.

A guideline for testing the pipe assembly is given in Annex D