BS EN 17414‑2 is the second part of the BS EN 17414 series of documents that specifies requirements and test methods for factory-made thermally insulated bonded flexible pipe-in-pipe assemblies for directly buried district cooling distribution systems, comprising a service pipe and a casing of polyethylene. The pipe assembly can also include the following additional elements: measuring wires, spacers, and diffusion barriers.
BS EN 17414‑2 is intended to be used in conjunction with EN 17414-1.
The design is based on an expected service life with continuous operation of a minimum 50 years.
NOTE: BS EN 17414‑2 applies only to insulated pipe assemblies, for continuous operation with water at various temperatures (1 to 30) °C and a maximum operating pressure of 25 bar dependent on the material specified.
NOTE: In conjunction with the other parts of EN 17414, BS EN 17414‑2 is applicable to pipes, fittings, their joints, and to joints with components made of non-plastics materials intended to be used for district cooling installations.
NOTE: BS EN 17414‑2 does not cover surveillance systems.
BS EN 17414‑2 on the bonded system with plastic service pipes is useful for:
District cooling is an emerging urban utility service involving the centralised production of chilled water that is piped to commercial buildings for air-conditioning.
BS EN 17414‑2 provides general requirements on service pipes, fittings, and their connections and gets the measure on axial shear strength, linear water tightness, and water vapour permeation of pipe assemblies.
Also, BS EN 17414‑2 provides the classification of pipe systems designed for continuous operating pressures and temperatures and their service life.
Overall, BS EN 17414‑2 let you manufacture the plastic service pipe with a bonded system to check on the quality control of the plastics service pipe fittings in accordance with temperature and pressure. Also, let you build an efficient and the necessary requirements for the waste management system and recycling of materials used for district cooling pipes.
EN 17414-2