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This International Standard specifies the characteristics and requirements for components such as pipes, fittings and valves made from one of the following materials intended to be used for thermoplastics piping systems in the field of industrial applications above and below ground: — unplasticized polyamide (PA-U)
NOTE 1 Requirements for industrial valves are given in this International Standard and/or in other standards. Valves are to be used with components conforming to this International Standard provided that they conform additionally to the relevant requirements of this International Standard.
This International Standard is applicable to either PA-U pipes, fittings, valves, and their joints and to joints with components of other plastics and non-plastic materials, depending on their suitability, intended to be used for the conveyance of liquid and gaseous fluids as well as solid matter in fluids for industrial applications such as the following:
— oil and gas industry (general purpose hydrocarbon-based fluids)
— industrial sewerage engineering (e.g. sewer contaminated with hydrocarbons);
— transport of CO2 (carbon capture and utilisation or storage (CCUS))
NOTE 2 Where relevant, national regulations are applicable.
Other application areas are permitted if the requirements of this International Standard and/or applicable national requirements are fulfilled.
National regulations in respect of fire behaviour and explosion risk are applicable. The components have to withstand the mechanical, thermal, and chemical demands to be expected and have to be resistant to the fluids to be conveyed.
Characteristics and requirements which are applicable for PA-U are covered by the relevant clauses of this International Standard. Those characteristics and requirements which are dependent on the material are given in the relevant normative annex A.
Components conforming to any of the product standards listed in the bibliography or with national standards, as applicable, may be used with components conforming to this International Standard, provided that they conform to the requirements for joint dimensions and to the relevant requirements of this International Standard.
- Consideration of PA-U by basic references for industrial piping standards as follows:
o ISO NP 8149, Unplasticized Polyamide (PA-U) pipes — Effect of time and temperature on the expected strength
o DIN 16463, Determination of influence of chemical fluids on the long-term hydrostatic strength of pressure pipes made of thermoplastics materials
o ISO 10358, Plastics pipes and fittings for industrial applications — Collection of data on combined chemical-resistance
o ISO PWI 4433-5, Thermoplastics pipes — Resistance to liquid chemicals — Classification — Part 5: unplasticized Polyamide (PA-U)
o ISO 17885, Plastics piping systems — Mechanical fittings for pressure piping systems — Specifications
- Consideration PA-U in functional industrial piping standards of CEN TC 234:
o EN 15001 -1 AMD & -2 AMD (Gas Infrastructure - Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for industrial and nonindustrial installations)
o Amendments for PA-U already agreed by CEN TC234 on initiative of GRTgaz - Consideration of PA-U under DVS AG W3.4b in different standards for characteristic values (lay out accepted for printing):
o NEW: Richtlinie DVS 2205-1 Beiblatt 8 (Entwurf) Berechnung von Behältern und Apparaten aus Thermoplasten – Kennwerte der Werkstoffgruppe weichmacherfreies Polyamid
o REVISED: DVS-2205-1 (Entwurf) Berechnung von Behältern und Apparaten aus Thermoplasten – Kennwerte
o REVISED: Richtlinie DVS 2201 mit BB1 – BB5 (6 Entwürfe) Prüfen von Halbzeug aus Thermoplasten Grundlagen Hinweise - Consideration of PA-U under DVS AG W4.3a in revision drafts of industrial piping standards:
o DVS 2210-1, supplements 1 to 4 (under revision – end of 2022 expected confirmation for publication) Industrierohrleitungen aus thermoplastischen Kunststoffen - Industrial Pipelines Made of Thermoplastics
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