ISO 16486-1:2020
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 1: General
This document specifies the general properties of unplasticized polyamide (PA-U) compounds for the manufacture of pipes, fittings and valves made from these compounds, intended to be buried and used for the supply of gaseous fuels. It also specifies the test parameters for the test methods to which it refers.
The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing.
This document establishes a calculation and design scheme on which to base the maximum operating pressure (MOP) of a PA-U piping system.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Geometrical characteristics
3.2 Materials
3.3 Material characteristics
3.4 Related to service conditions
4 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 Material
5.1 Material of the components
5.2 Compound
5.2.1 Additives
5.2.2 Colour
5.2.3 Identification compound
5.2.4 Rework material
5.2.5 Characteristics
5.2.6 Change of compound formulation
5.3 Fusion compatibility
5.4 Classification and designation
5.5 Maximum operating pressure (MOP)
5.6 Effects of transport of liquid hydrocarbons and hydrogen
Annex A (normative) Assessment of degree of pigment or carbon black dispersion in unplasticized polyamide compounds
Annex B (normative) Chemical resistance
Annex C (normative) Hoop stress at burst
Annex D (informative) Continuous liquid hydrocarbon exposure from transported fluid or soil contamination
Annex E (informative) Permeation resistance against different gases
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Geometrical characteristics
3.2 Materials
3.3 Material characteristics
3.4 Related to service conditions
4 Symbols and abbreviated terms
4.1 Symbols
4.2 Abbreviated terms
5 Material
5.1 Material of the components
5.2 Compound
5.2.1 Additives
5.2.2 Colour
5.2.3 Identification compound
5.2.4 Rework material
5.2.5 Characteristics
5.2.6 Change of compound formulation
5.3 Fusion compatibility
5.4 Classification and designation
5.5 Maximum operating pressure (MOP)
5.6 Effects of transport of liquid hydrocarbons and hydrogen
Annex A (normative) Assessment of degree of pigment or carbon black dispersion in unplasticized polyamide compounds
Annex B (normative) Chemical resistance
Annex C (normative) Hoop stress at burst
Annex D (informative) Continuous liquid hydrocarbon exposure from transported fluid or soil contamination
Annex E (informative) Permeation resistance against different gases
Bibliography