BS EN 17415-1:2020
$189.07
District cooling pipes. Bonded single pipe systems for directly buried cold water networks – Factory made pipe assembly of steel or plastic service pipe, polyurethane thermal insulation and a casing of polyethylene
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 46 |
This document specifies requirements, design and test methods for straight lengths of factory made thermally insulated pipe-in-pipe assemblies for directly buried district cooling distribution systems, comprising a service pipe from DN 15 to DN 1200, rigid polyurethane foam insulation and a casing of polyethylene. The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
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.
The design is based on an expected service life with continuous operation of a minimum 50 years.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions 4 Requirements 4.1 General 4.2 Service pipes 4.2.1 Steel service pipes 4.2.1.1 Specification |
| 10 | 4.2.1.2 Diameter |
| 11 | 4.2.1.3 Wall thickness 4.2.1.4 Surface condition |
| 12 | 4.2.1.5 Pipe ends 4.2.2 Plastic service pipes 4.2.2.1 Specification 4.2.2.2 Diameter 4.2.2.3 Wall thickness |
| 13 | 4.2.2.4 Surface condition 4.3 Casing 4.3.1 Material properties 4.3.1.1 Material composition 4.3.1.2 Melt mass-flow rate |
| 14 | 4.3.1.3 Thermal stability 4.3.1.4 Use of rework material 4.3.2 Casing properties 4.3.2.1 Nominal outside diameter 4.3.2.2 Wall thickness |
| 15 | 4.3.2.3 Appearance, surface finish, casing ends 4.3.2.4 Elongation at break 4.3.2.5 Heat reversion 4.3.2.6 Stress crack resistance 4.4 Polyurethane (PUR) foam thermal insulation 4.4.1 Composition 4.4.2 Cell structure 4.4.2.1 General appearance |
| 16 | 4.4.2.2 Cell size 4.4.2.3 Closed cell content 4.4.2.4 Voids and bubbles 4.4.3 Compressive strength 4.4.4 Foam density 4.4.5 Water absorption at elevated temperature 4.5 Pipe assembly 4.5.1 General 4.5.2 Service pipe ends without thermal insulation 4.5.3 Service pipe end preparation 4.5.3.1 Steel service pipes 4.5.3.2 Plastics service pipes |
| 17 | 4.5.4 Diameter and wall thickness of the casing |
| 18 | 4.5.5 Thermal insulation series – steel service pipes 4.5.6 Thermal insulation series – plastics service pipes |
| 20 | 4.5.7 Centre line deviation 4.5.8 Expected service life 4.5.8.1 General remarks 4.5.8.2 Shear strength 4.5.9 Thermal conductivity |
| 21 | 4.5.10 Impact resistance 4.5.11 Surface conditions at delivery 4.5.12 Measuring wires for surveillance systems 4.5.13 Linear water tightness 5 Test methods 5.1 General conditions and test specimens 5.1.1 General conditions 5.1.2 Test specimens |
| 22 | 5.2 Casing 5.2.1 Appearance and surface finish 5.2.2 Elongation at break |
| 23 | 5.2.3 Carbon black dispersion, homogeneity 5.2.4 Stress crack resistance test |
| 24 | 5.3 Polyurethane (PUR) foam thermal insulation 5.3.1 Composition 5.3.2 Cell structure 5.3.2.1 Cell size 5.3.2.2 Closed cell content 5.3.2.3 Voids and bubbles |
| 25 | 5.3.3 Compressive strength 5.3.4 Foam density 5.3.5 Water absorption |
| 26 | 5.4 Pipe assembly 5.4.1 Axial shear strength 5.4.1.1 Test specimen 5.4.1.2 Test procedure 5.4.1.3 Calculation of shear strength |
| 27 | 5.4.1.4 Test temperature 5.4.2 Thermal conductivity |
| 28 | 5.4.3 Impact resistance 5.4.4 Linear water tightness |
| 29 | 6 Marking 6.1 General |
| 30 | 6.2 Service pipe 6.2.1 Steel service pipe 6.2.2 Plastics service pipe 6.3 Casing 6.4 Pipe assembly |
| 31 | Annex A (informative)Guidelines for inspection and testing A.1 General A.2 Manufacturer’s type test A.3 Manufacturer’s quality control A.4 External inspection A.5 Manufacturer’s responsibility |
| 35 | Annex B (normative)Thermal conductivity of factory made pipe assemblies – Test procedure B.1 General B.2 Requirements B.2.1 Test specimen B.2.2 Operating temperature B.2.3 Types of apparatus B.3 Apparatus B.3.1 Guarded end apparatus B.3.2 Calibrated end or calculated end apparatus |
| 36 | B.3.3 Dimensions B.3.4 Heater pipe surface temperature B.4 Test specimens B.4.1 Conditioning B.4.2 Surface temperature measurement B.4.3 Location of temperature sensors B.5 Procedure B.5.1 Test length B.5.2 Diameter measurement B.5.3 Thickness of casing |
| 37 | B.5.4 Ambient requirements B.5.5 Test pipe temperature B.5.6 Power supply B.5.7 Axial heat loss B.5.8 Test period and stability B.6 Calculations B.6.1 Thermal conductivity B.7 Symbols and units |
| 40 | Annex C (informative)Waste treatment and recycling |
| 41 | Annex D (informative)Application of Miner’s Rule |
