1、July 2015 Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 7
2、5.200; 23.040.01!%D9(“2332205www.din.deDDIN ISO 16486-1Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing andmechanical jointing Part 1: General (ISO 16486-1:2012 + AMD 1:2014),English translation of DIN ISO 16486-1:2015-07Kunst
3、stoff-Rohrleitungssysteme fr die Gasversorgung Rohrleitungssysteme aus weichmacherfreiem Polyamid (PA-U) mit Schweiverbindungenund mechanischen Verbindungen Teil 1: Allgemeines (ISO 16486-1:2012 + AMD 1:2014),Englische bersetzung von DIN ISO 16486-1:2015-07Systmes de canalisations en matires plastiq
4、ues pour la distribution de combustiblesgazeux Systmes de canalisations en polyamide non plastifi (PA-U) avec assemblages parsoudage et assemblages mcaniques Partie 1: Gnralits (ISO 16486-1:2012 + AMD 1:2014),Traduction anglaise de DIN ISO 16486-1:2015-07www.beuth.deDocument comprises pagesIn case o
5、f doubt, the German-language original shall be considered authoritative.2407.15DIN ISO 16486-1:2015-07 2 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Bibliography 4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions
6、 .7 3.1 Geometrical characteristics 7 3.2 Materials .8 3.3 Material characteristics .9 3.4 Related to service conditions .9 4 Symbols and abbreviated terms 10 4.1 Symbols 10 4.2 Abbreviated terms .10 5 Material .10 5.1 Material of the components 10 5.2 Compound 10 5.3 Fusion compatibility 14 5.4 Cla
7、ssification and designation .14 5.5 Maximum operating pressure (MOP) .14 Annex A (normative) Assessment of degree of pigment or carbon black dispersion in unplasticized polyamide compounds 15 Annex B (normative) Chemical resistance .19 Annex C (normative) Hoop stress at burst .22 Bibliography 24 Nat
8、ional foreword This document (ISO 16486-1:2012 + AMD 1:2014) has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids”, Subcommittee SC 4 “Plastics pipes and fittings for the supply of gaseous fuels”. The responsible German body involved in
9、 its preparation was the DIN-Normenausschuss Kunststoffe (DIN Standards Committee Plastics), Working Committee NA 054-05-08 AA Kunststoff-Rohrleitungssysteme fr die Gasversorgung. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DI
10、N and/or ISO shall not be held responsible for identifying any or all such patent rights. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. DIN ISO 16486 consists of the following parts, under the general title Plastics piping systems for the supply
11、 of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing: Part 1: General Part 2: Pipes Part 3: Fittings Part 5: Fitness for purpose of the system Part 6: Code of practice for design, handling and installation For the International Standards referr
12、ed to in this document there are no national standards available unless they have been published as DIN EN ISO standards with the same number, except for those below which correspond as follows: ISO 16486-5 DIN ISO 16486-5 DIN ISO 16486-1:2015-07 3 National Annex NA (informative) Bibliography DIN IS
13、O 16486-5, Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing Part 5: Fitness for purpose of the system DIN ISO 16486-1:2015-07 4 IntroductionThin wall thickness unplasticized polyamide (PA-U) pipes and s
14、olvent cement joints are used typically for low pressures, while thicker wall thickness pipes and butt fusion, electrofusion or mechanical joints are typically used for high pressures.For technical and safety reasons, it is not possible to mix the components of the two types of piping system (thin w
15、all thickness pipes cannot be jointed by butt fusion or mechanical joints and vice versa). In particular, solvent cement joints must not be used for jointing for high pressure piping systems.So for the time being, the standardization programme dealing with unplasticized polyamide (PA-U) piping syste
16、ms for the supply of gaseous fuels is split into two series of International Standards, with one series (ISO 17467) covering piping systems the components of which are connected by solvent cement jointing and the other (ISO 16486) the components of which are connected by fusion jointing and/or mecha
17、nical jointing. When more experience will be gained from the field, it might be reasonable to merge the ISO 17467 series and the ISO 16486 series in one single series applicable to PA-U piping systems.A similar series (ISO 17135) for fusion and mechanically jointed plasticized polyamide (PA-P) pipin
18、g systems is in preparation.NOTE A list of standards related to polyamide pipes and fittings for the supply of gas is given in the Bibliography. See References 6 to 9.Plastics piping systems for the supply of gaseous fuels Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechan
19、ical jointing Part 1: General DIN ISO 16486-1:2015-07 5 1 ScopeThis part of ISO 16486 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 fue
20、ls. It also specifies the test parameters for the test methods to which it refers.ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing.This part of ISO 16486 establishes a calculation and design scheme on which to base the
21、 maximum operating pressure (MOP) of a PA-U piping system.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the lates
22、t edition of the referenced document (including any amendments) applies.ISO 179-1:2010, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact testISO 291, Plastics Standard atmospheres for conditioning and testingISO 307, Plastics Polyamides Determination of viscosity nu
23、mberISO 472, Plastics VocabularyISO 527-1, Plastics Determination of tensile properties Part 1: General principlesISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plasticsISO 1043-1, Plastics Symbols and abbreviated terms Part 1: Basic polyme
24、rs and their special characteristicsISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General methodISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination o
25、f the resistance to internal pressure Part 2: Preparation of pipe test piecesISO 1183-1, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration methodISO 1183-2, Plastics Methods for determining the density of non-cellul
26、ar plastics Part 2: Density gradient column methodISO 1874-1, Plastics Polyamide (PA) moulding and extrusion materials Part 1: Designation system and basis for specificationDIN ISO 16486-1:2015-07 6 ISO 1874-2, Plastics Polyamide (PA) moulding and extrusion materials Part 2: Preparation of test spec
27、imens and determination of propertiesISO 2505, Thermoplastics pipes Longitudinal reversion Test method and parametersISO 6259-1, Thermoplastics pipes Determination of tensile properties Part 1: General test methodISO 6259-3, Thermoplastics pipes Determination of tensile properties Part 3: Polyolefin
28、 pipesISO 6964, Polyolefin pipes and fittings Determination of carbon black content by calcination and pyrolysis Test method and basic specificationISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolat
29、ionISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification, designation and design coefficientISO 13477, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Small-scale steady-state test (S4 test)I
30、SO 13478:2007, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Full-scale test (FST)ISO 13479, Polyolefin pipes for the conveyance of fluids Determination of resistance to crack propagation Test method for slow crack growth on notched pi
31、pesISO 13954, Plastics pipes and fittings Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mmISO 15512, Plastics Determination of water contentISO 16486-5, Plastics piping systems for the supply of gaseous fuels Unplasticized
32、 polyamide (PA-U) piping systems with fusion jointing and mechanical jointing Part 5: Fitness for purpose of the systemISO 16871, Plastics piping and ducting systems Plastics pipes and fittings Method for exposure to direct (natural) weathering3 Terms and definitionsFor the purposes of this document
33、, the terms and definitions given in ISO 472, ISO 1043-1 and ISO 1874-1, and the following apply.3.1 Geometrical characteristics3.1.1nominal outside diameterdnspecified outside diameter of a component, which is identical to the minimum mean outside diameter, dem,min, in millimetresNOTE The nominal i
34、nside diameter of a socket is equal to the nominal outside diameter of the corresponding pipe.3.1.2outside diameter at any pointdeoutside diameter measured through the cross-section at any point on a pipe, or the spigot end of a fitting, rounded up to the nearest 0,1 mmDIN ISO 16486-1:2015-07 7 3.1.
35、3mean outside diameterdemmeasured length of the outer circumference of a pipe, or the spigot end of a fitting, divided by ( 3,142), rounded up to the nearest 0,1 mm3.1.4minimum mean outside diameterdem,minminimum value for the mean outside diameter as specified for a given nominal size3.1.5maximum m
36、ean outside diameterdem,maxmaximum value for the mean outside diameter as specified for a given nominal size3.1.6out-of-roundnesspipe or fitting difference between the measured maximum outside diameter and the measured minimum outside diameter in the same cross-sectional plane of a pipe or spigot en
37、d of a fitting3.1.7out-of-roundnesssocket difference between the measured maximum inside diameter and the measured minimum inside diameter in the same cross-sectional plane of a socket3.1.8nominal wall thicknessenwall thickness, in millimetres, corresponding to the minimum wall thickness, emin3.1.9w
38、all thickness at any pointemeasured wall thickness at any point around the circumference of a component, rounded up to the nearest 0,1 mm3.1.10minimum wall thickness at any pointeminminimum value for the wall thickness at any point around the circumference of a component, as specified3.1.11standard
39、dimension ratioSDRratio of the nominal outside diameter, dn, of a pipe to its nominal wall thickness, en3.2 Materials3.2.1compoundhomogenous mixture of base polymer (PA-U) and additives, i.e. antioxidants, pigments, UV stabilisers and others, at a dosage level necessary for the processing and use of
40、 components conforming to the requirements of this part of ISO 164863.2.2virgin materialmaterial in a form such as granules or powder that has not been previously processed other than for compounding and to which no rework material or recyclable material has been addedDIN ISO 16486-1:2015-07 8 3.2.3
41、rework materialmaterial from a manufacturers own production (of compounds and of pipes, fittings or valves) that has been reground or pelletized for reuse by that same manufacturer3.3 Material characteristics3.3.1lower confidence limit of the predicted hydrostatic strengthLPLquantity, with the dimen
42、sions of stress, which represents the 97,5 % lower confidence limit of the predicted hydrostatic strength at a temperature and time tNOTE 1 The quantity is expressed in megapascals (MPa).NOTE 2 Temperature, , is expressed in degrees Celsius and time, t, is expressed in years.3.3.2minimum required st
43、rengthMRSvalue of LPLat 20 C and 50 years, rounded down to the next smaller value of the R10 series or the R20 seriesNOTE The R10 series conforms to ISO 31and the R20 series conforms to ISO 4972.3.3.3categorized required strength at temperature and time tCRS,tvalue of LPLat temperature and time t, r
44、ounded down to the next smaller value of the R10 series or the R20 seriesNOTE 1 CRS,tat 20 C and 50 years equals MRS.NOTE 2 Temperature, , is expressed in degrees Celsius and time, t, is expressed in years.NOTE 3 The R10 series conforms to ISO 31and the R20 series conforms to ISO 4972.3.3.4design co
45、efficientCcoefficient with a value greater than 1, which takes into consideration service conditions as well as properties of the components of a piping system other than those represented in the lower confidence limit3.3.5design stressss,tstress derived by dividing the MRS or CRS,tby the design coe
46、fficient C, i.e. s= MRS/C, or s,t= CRS,t/C3.4 Related to service conditions3.4.1gaseous fuelany fuel which is in a gaseous state at a temperature of 15 C, at a pressure of one bar (0,1 MPa)3.4.2maximum operating pressureMOPmaximum effective pressure of the gas in the piping system, expressed in bar,
47、 which is allowed in continuous useNOTE The MOP takes into account the physical and the mechanical characteristics of the components of a piping system and the influence of the gas on these characteristics.DIN ISO 16486-1:2015-07 9 4 Symbols and abbreviated terms4.1 SymbolsC design coefficientdeouts
48、ide diameter at any pointdem mean outside diameterdem,max maximum mean outside diameterdem,minminimum mean outside diameterdnnominal outside diametere wall thickness at any pointeminminimum wall thickness at any pointennominal wall thicknesssdesign stressLPLlower confidence limit of the predicted hy
49、drostatic strengthpccritical pressureNOTE 1 The symbols deand e correspond to deyand eygiven in other International Standards such as ISO 11922-13.NOTE 2 Additional symbols specific to Annex C are defined therein.4.2 Abbreviated termsCRS,t categorized required strength at temperature and time tMOP maximum operating pressureMRS minimum required strengthPA-U unplasticized polyamideR series of preferred numbers
