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© ISO 2017 Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 1 General Systèmes de canalisations en plastique pour les installations d’eau chaude et froide — Polybu[.]
INTERNATIONAL STANDARD ISO 15876-1 Second edition 2017-01 Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 1: General Systèmes de canalisations en plastique pour les installations d’eau chaude et froide — Polybutène (PB) — Partie : Généralités Reference number ISO 15876-1:2017(E) © ISO 2017 ISO 15876-1:2017(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2017, Published in Switzerland All rights reserved Unless otherwise specified, no part o f this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country o f the requester ISO copyright o ffice Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) Page Contents iv Introduction v Scope Normative references Terms and definitions, symbols and abbreviated terms 3.3 Abbreviated terms Classification o f service conditions Material 5.1 General f 5.4 Reprocessable material System performance requirements Bibliography Foreword Terms and definitio ns Symb o ls I nfluence o n water intended C rys tallis atio n © ISO 2017 – All rights reserved o r human co ns ump tio n iii ISO 15876-1:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso org/patents) Any trade name used in this document is in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the meaning o f ISO specific terms and expressions related to formity assessment, as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html ISO 15876-1 was prepared by the European Committee Standardization (CEN) Technical Committee CEN/TC 155, Plastics piping systems and ducting systems, in collaboration with ISO Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport offluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement) This second edition cancels and replaces the first edition (ISO 15876-1:2003), which has been technically revised with the following changes: — introduction o f polybutene random copolymer (PB-R) and renaming existing polybutene (PB) into polybutene homopolymer (PB-H); — revision o f specifications for conditioning o f samples It also incorporates the Amendment ISO 15876-1:2003/Amd 1:2007 A list of all parts in the ISO 15876 series can be found on the ISO website iv © ISO 2017 – All rights reserved ISO 15876-1:2 017(E) Introduction The System Standard ISO 15876, o f which this document is Part 1, specifies the requirements for a piping system when made from polybutene (PB) The piping system is intended to be used for hot and cold water installations In respect o f potential adverse e ffects on the quality o f water intended for human consumption, caused by the product covered by ISO 15876 (all parts): — ISO 15876 (all parts) provides no in formation as to whether the product may be used without restriction in any o f the Member States o f the EU or EFTA; — it should be noted that, while awaiting the adoption o f verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force Requirements and test methods for material and components o f the piping systems are specified in ISO 15876-2 and ISO 15876-3 Characteristics for fitness for purpose (mainly for joints) are covered in ISO 15876-5 ISO/TS 15876-7 gives guidance for the assessment o f formity This document specifies the general aspects o f the plastics piping system At the date o f publication o f this standard, System Standards for piping systems o f other plastics materials used for the same application include ISO 15874, ISO 15875, ISO 15876, ISO 15877, ISO 21003 and ISO 22391 © ISO 2017 – All rights reserved v INTERNATIONAL STANDARD ISO 15876-1:2017(E) Plastics piping systems for hot and cold water installations — Polybutene (PB) — Part 1: General Scope T h i s c u ment s p e ci fie s the genera l a s p e c ts o f p olybutene -1 used for i ntende d ho t a nd cold water i n s ta l lation s with i n bu i ld i ngs for hu man s u mp tion (dome s tic s ys tem s) and for for (PB -1) pipi ng s ys tem s i ntende d to b e the conveyance o f water whe ther or no t he ati ng s ys tem s , u nder de s ign pre s s u re s and temperatures according to the class of application (see Table 1) T he de s ignation p olybutene i s u s e d to ge ther with the abbrevi ation PB th roughout th i s c u ment This document covers a range of service conditions (application classes) and design pressure and pipe dimension classes Values of TD, Tmax and Tmal in excess of those in Table no t apply NO TE I t i s the re s p o n s ibi l ity o f the pu rch a s er o r s p e c i fier to m a ke the ap propr i ate s ele c tion s fro m the s e a s p e c ts , ta ki ng i nto acco u nt thei r p a r tic u l a r re qu i rements a nd a ny rele va nt n ation a l re gu l ation s a nd i n s ta l l ation practices or codes I t a l s o s p e c i fie s the te s t p a rame ters for the te s t me tho d s re ferre d to i n th i s c ument I n conj u nc tion with the o ther p ar ts o f I S O 76 , th i s c u ment i s appl ic able to PB pip e s , fitti ngs , thei r j oi nts a nd to j oi nts with comp onents o f o ther pla s tics and non-pla s tic s materi a l s i ntende d to b e us e d hot and cold water installations for Normative references T he fol lowi ng c u ments are re ferre d to i n the tex t i n s uch a way th at s ome or a l l o f thei r content s titute s re qu i rements o f th i s c u ment For date d re ference s , on ly the e d ition cite d appl ie s For u ndate d re ference s , the late s t e d ition o f the re ference d c ument (i nclud i ng a ny amend ments) appl ie s ISO 472, Plastics — Vocabulary ISO 1043-1, Plastics — Symbols and abbreviated terms — characteristics Part 1: Basic polymers and their special ISO 15876-2, Plastics piping system for hot and cold water installations — Polybutene (PB) — Part 2: Pipes ISO 15876-3, Plastics piping system for hot and cold water installations — Polybutene (PB) — Part 3: Fittings ISO 15876-5, Plastics piping system for hot and cold water installations — Polybutene (PB) — Part 5: Fitness for purpose of the system Terms and definitions, symbols and abbreviated terms For the pu rp o s e s o f th i s c u ment, the term s a nd defi nition s , s ymb ol s and ab brevi ate d term s given i n I S O 47 a nd I S O 10 43 -1 and the © ISO 2017 – All rights reserved fol lowi ng apply ISO 876-1 : 01 7(E) ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia org/ — ISO Online browsing platform: available at http://www.iso org/obp 3.1 Terms and definitions 3.1.1 Geometrical terms and definitions 1 nominal size DN nu meric a l de s ignation o f the s i z e o f a comp onent, wh ich i s a conven ient rou nd numb er, approxi mately equal to the manufacturing dimensions in millimetres (mm) 1 nominal size DN/OD nominal size, related to outside diameter 1 nominal outside diameter dn s p e c i fie d d i ame ter, i n m i l l i me tre s , a s s igne d to a nom i na l s i z e D N/OD 1 outside diameter (at any point) de me a s ure d outs ide d ia me ter th rough the c ro s s- s e c tion at any p oi nt o f a pip e or s pigo t end o f a fitti ng , rounded up to the nearest 0,1 mm 1 mean outside diameter dem me a s ure d leng th o f the outer ci rc u m ference o f a pip e or s pigo t end o f a fitti ng i n a ny c ro s s s e c tion d ivide d b y π ( ≈ 3, 142 ) rounded up to the nearest 0,1 mm 1 minimum mean outside diameter dem,min m i n i mum va lue o f the me a n outs ide d iame ter a s s p e ci fie d for a given nom i na l s i z e 1 ma ximum mean outside diameter dem,max ma xi mu m va lue o f the me an outs ide d i ame ter as s p e c i fie d for a given nom i na l s i z e 1 mean inside diameter of socket dsm arithmetical mean of two measured inside diameters perpendicular to each other at the midpoint of the socket length © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) 1 out- of-roundness ovality difference between the measured maximum outside diameter and the measured minimum outside diameter in the same cross-sectional plane o f a pipe or spigot end o f a fitting, or the di fference between the measured maximum inside diameter and the measured minimum inside diameter in the same cross-sectional plane of a socket 1 10 nominal wall thickness en numerical designation o f the wall thickness o f a component, approximately equal to the manu facturing dimension in millimetres (mm) 1 11 wall thickness (at any point) e measured wall thickness at any point around the circum ference o f a component, rounded up to the nearest 0,1 mm 1 minimum wall thickness (at any point) e minimum wall thickness at any point around the circum ference o f a component, as specified 1 13 ma ximum wall thickness (at any point) e max maximum wall thickness at any point around the circum ference o f a component, as specified 1 14 tolerance permitted variation o f the specified value o f a quantity expressed as the di fference between the permitted maximum and permitted minimum value 1 15 pipe series S dimensionless number for pipe designation conforming to ISO 4065 Note to entry: According to ISO 15876 (all parts), the pipe series S is used as a means for selecting pipe sizes for practical purposes (see ISO 15876-2) 1 16 calculated pipe value Scalc value for a specific pipe calculated according to the following equation, rounded up to the nearest 0,1 mm: S calc = where dn en 3.1.2 dn - e n 2e n is the nominal outside diameter, in millimetres; is the nominal wall thickness, expressed in millimetres Terms and definitions related to service conditions © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) design pressure p D for h ighe s t pre s s u re relate d to the ci rc u m s tance s to be used No te to entr y: T he de s ign pre s s u re ( p D wh ich the s ys tem s b e en de s igne d a nd i s i ntende d ) i s e qual to the ma ximum de s ign pres s u re (M DP) , as s p e ci fie d i n E N -1 hydros tatic s tress σ stress, expressed in megapascals, induced in the wall of a pipe when a pressure is applied using water as a medium N o te to entr y: H yd ro s tatic s tre s s i s c a lc u l ate d u s i ng the σ = p × where p ap proxi m ate for mu l a: i s the app l ie d p re s s u re , i n me gap a s c a l s; em d e fol lowi ng (d em - e ) e i s the me a n outs ide d i a me ter o f the pip e , i n m i l l i me tre s; is the minimum wall thickness, in millimetres design temperature D T temp erature cond ition s or for a combi nation o f temp erature s o f the conveye d water dep endent on the s er vice wh ich the s ys tem has b e en de s igne d ma ximum design temperature max T highest design temperature, TD , o cc u rri ng for shor t p erio d s on ly malfunction temperature mal T highest temperature that can be reached when the control limits are exceeded cold water temperature cold T temp erature o f conveye d cold water o f up to approxi mately ° C N o te to entr y: For de s ign pu r p o s e s , ° C i s u s e d treated water for heating ins tallations water, intended for heating installations, which contains additives which have no detrimental effect on the s ys tem 3.1.3 Terms and definitions related to material characteristics lower confidence limit o f the predicted hydrostatic strength σLPL qua ntity, i n megap a s c a l s (M Pa) , with the d i men s ion s o f s tre s s , wh ich repre s ents the 7, fidence l i m it o f the pre d ic te d hyd ro s tatic s treng th at the given temp eratu re, , and time, t % lower T © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) design stress σD allowable stress, in megapascals (MPa) in the pipe material, σDP, or in the plastics fitting material, σDF, for a given application or set o f service conditions, respectively Note to entry: See also ISO 15876-2:2016, Annex A o v e r a l l s e r v i c e ( d e s i g n ) c C o e f f i c i e n t overall coe fficient with a value greater than one, which takes into consideration service conditions as well as properties o f the components o f a piping system other than those represented in the lower confidence limit o f the predicted hydrostatic strength, σLPL own reprocessable material material prepared from rejected unused pipes and fittings, including trimmings from the production o f pipes and fittings, that will be reprocessed in a manu facturer’s plant a fter having been previously processed by the same manu facturer by a process such as moulding or extrusion and for which the complete formulation or material specification is known pipes with barrier layer plastics pipes provided with a thin barrier layer, (e.g to prevent or greatly diminish the di ffusion o f gases and the transmission of light through the pipe wall) and where the design stress requirements are totally met by the base polymer (PB) Note to entry: Such pipes typically have an outside (barrier) layer o f maximum 0,4 mm thickness, including any adhesive Pipes with an outside layer greater than 0,4 mm are considered as multilayer pipes (see Re ference [9]), with the outside layer then being the first o f multiple layers rather than having only barrier function Symbols C overall service (design) coe fficient de outside diameter (at any point) dsm mean outside diameter minimum mean outside diameter maximum mean outside diameter nominal outside diameter mean inside diameter of socket e wall thickness at any point e max maximum wall thickness at any point e minimum wall thickness at any point dem dem,min dem,max dn en nominal wall thickness p internal hydrostatic pressure pD design pressure © ISO 2017 – All rights reserved ISO 15876-1:2017(E) t calculated pipe value maximum calculated pipe value temperature cold water temperature design temperature malfunction temperature maximum design temperature time σ hyd ro s tatic s tre s s σcold de s ign s tre s s at ° C Scalc Scalc,max T Tcold TD Tmal Tmax design stress σD σDF de s ign s tre s s o f plas tics fitti ng materi a l design stress of plastics pipe material σDP σF hyd ro s tatic s tre s s va lue s o f pla s tic s fitti ng materia l σP hyd ro s tatic s tre s s va lue s o f pla s tic s pip e materi a l σLPL lower fidence l i m it o f the pre d ic te d hyd ro s tatic s treng th 3.3 Abbreviated terms DN DN/OD LPL nominal size nominal size, outside diameter related lower fidence l i m it o f pre d ic te d s treng th maximum design pressure M DP PB PB-H PB-R S C p olybutene p olybutene homop olymer p olybutene random cop olymer pipe series l a s s i f i c a t i o n o f s e r v i c T he p er formance re qu i rements e c for o n d i t i o n s pipi ng s ys tem s form i ng to I S O 76 (a l l p a r ts) a re s p e ci fie d four different application classes shown in Table NO TE E ach cl a s s cl a s s i fic ation i s ta ken is rel ate d from to a typic a l field o f ap p l ic atio n a nd for a de s ign p er io d of ye a rs for T he I S O 10 T he field s o f app l ic ation a re given a s a gu idel i ne a nd a re no t o b l igator y C l a s s ( low temp eratu re u nder flo o r he ati ng) gi ven i n I S O 10 e s no t app l y to I S O 76 (a l l p a r ts) © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) For any application, the parties concerned shall agree the selection o f the applicable class forming to Table Each application class shall be combined with a design pressure, pD, of bar1) , bar, bar or 10 bar, as applicable T Applica- D es ign tion class temp erature TD , l e T ime at TD — C l a Tmax s s i f i c a t i o n Time at Tmax o f s e r v i c Tmal e c o n d i t i o n T ime at s T y p Tmal i c a l f i e l d o f a p p l i c a - tion years °C 60 70 20 49 49 2,5 80 80 1 95 95 h 100 100 40 20 70 2,5 100 100 Underfloor heating and low 60 25 100 100 High temperature radiators Followed by Followed by (see next column) 20 14 Followed by 5b °C Followed by 4b b years °C 1a 2a a 60 25 80 10 Followed by Followed by (see next column) Hot water supply (60 °C) Hot water supply (70 °C) temperature radiators Followed by (see next column) 90 Followed by (see next column) a country may select either class or class to form to its national regulations b Where more than one design temperature appears for any class, the times should be aggregated (e.g the design temperature profile for 50 years for class is: 20 °C for 14 years followed by 60 °C for 25 years, 80 °C for 10 years, 90 °C for year and 100 °C for 100 h) NOTE For values of TD , Tmax and Tmal in excess o f those in this table, this document does not apply All systems which satis fy the conditions specified in Table shall also be suitable for the conveyance o f cold water for a period o f 50 years at a temperature o f 20 °C and a design pressure o f 10 bar All heating installations shall only use water or treated water as the trans fer fluid The manu facturer o f plastics pipes and fittings should give guidance on the type o f treatment required and on aspects o f application such as oxygen permeation 5 Material General The material from which the pipes and fittings are made shall be polybutene (PB) which shall form to ISO 15876-2 and ISO 15876-3, as applicable This document is applicable to two types o f polybutene (PB), as follows: 1) bar = 10 N/m2 = 0,1 MPa © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) Polybutene homopolymer Polybutene random copolymer where PB-H PB-R I n f l PB-H PB-R compound prepared by polymerisation o f no less than 95 % butene-1 by weight; compound prepared by polymerisation o f no less than 85 % butene-1 and no less than 95 % o f total olefins by weight u e n c e o n w a t e r i n t e n d e d f o r h u m a n c o n s u m p t i o n All plastics and non-plastics materials for components o f PB piping systems, when in permanent or temporary contact with water which is intended for human consumption, shall not adversely a ffect the quality o f the drinking water Crystallisation A fter extrusion or moulding, PB undergoes a crystalline phase transition (usually called ageing) be fore it develops its final properties The minimum required transition time depends on temperature and product characteristics The same final material per formance is obtained once completion o f crystalline phase transition is achieved, irrespective o f transition conditions For quality control purposes, there fore, test specimens shall be taken immediately a fter processing and be conditioned in accordance with recommendations obtained from the compound supplier prior to testing The crystalline phase transition is dependent on time and temperature For guidance, a minimum time o f five days for PB-H and one day for PB-R should be allowed at 23 °C unless accelerated ageing is performed NOTE The crystalline phase transition can be considerably accelerated upon applying higher hydrostatic pressure of approx kbar to kbar Accelerated ageing at higher pressure can be accepted if test results can be proven reproducible and equal to those obtained at atmospheric pressure Because o f the slow crystallization, trans formation and shrinkage which takes places a fter PB-H and PB-R plastics are cooled from the melt, physical testing should be delayed a fter extrusion or moulding until this morphological transition is complete Reprocessable material The use of the manufacturer’s own reprocessable material obtained during the product and works testing of products conforming to this document is permitted in addition to the use of virgin material Reprocessable material obtained from external sources and recyclable material shall not be used System performance requirements Pipes forming to ISO 15876-2 and fittings forming to ISO 15876-3, or other types o f fittings used, when jointed together, shall be tested in accordance with ISO 15876-5 Pipes and fittings shall have the same application class for use as a system For combinations o f pipes and fittings having di fferent design pressures (4 bar, bar, bar or 10 bar), the design pressure o f the system shall be defined by the lowest design pressure rating © ISO 2017 – All rights reserved ISO 876-1 : 01 7(E) Bibliography Plastics piping systems — Guidance for the installation inside buildings of pressure [1] C E N/ T R 10 , [2 ] I SO 4065 , Thermoplastics pipes — Universal wall thickness table [3 ] E N -1 , Specifications for installations inside buildings conveying water for human consumption piping systems for hot and cold water intended for human consumption — Part 1: General [4] I S O 10 , and design [5 ] Plastics piping systems for hot and cold water installations — Guidance for classification ISO 15874 (all parts), Polypropylene (PP) [6] I S O 75 (a l l p ar ts) , polyethylene (PE-X) [7 ] [8] [9] [10] Plastics piping systems for hot and cold water installations — Plastics piping systems for hot and cold water installations — Crosslinked ISO 15876 (all parts), Plastics piping systems for hot and cold water installations — Polybutylene (PB) I S O 7 (a l l p a r ts) , Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl chloride) (PVC-C) I S O 10 (a l l p ar ts) , Multilayer piping systems for hot and cold water installations inside buildings I S O 2 91 (a l l p a r ts) , Plastics piping systems for hot and cold water installations — Polyethylene o f raised temperature resistance (PE-RT) © ISO 2017 – All rights reserved ISO 15876-1:2 017(E) ICS 23.040.01; 91.140.60 Price based on pages © ISO 2017 – All rights reserved