1、BRITISH STANDARDBS EN ISO 1167-4:2007Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 4: Preparation of assembliesICS 23.040.20; 23.040.45g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g
2、44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 1167-4:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 56321 8Nationa
3、l forewordThis British Standard is the UK implementation of EN ISO 1167-4:2007. This Standard, together with BS EN ISO 1167 Parts 1, 2 23.040.45 Supersedes EN 921:1994 English VersionThermoplastics pipes, fittings and assemblies for theconveyance of fluids - Determination of the resistance to intern
4、alpressure - Part 4: Preparation of assemblies (ISO 1167-4:2007)Tubes, raccords et assemblages en matiresthermoplastiques pour le transport des fluides -Dtermination de la rsistance la pression interne - Partie4: Prparation des assemblages (ISO 1167-4:2007)Rohre, Formstcke und Bauteilkombinationen a
5、usthermoplastischen Kunststoffen fr den Transport vonFlssigkeiten - Bestimmung der Widerstandsfhigkeitgegen inneren berdruck - Teil 4: Vorbereitung derBauteilkombinationen (ISO 1167-4:2007)This European Standard was approved by CEN on 2 October 2007.CEN members are bound to comply with the CEN/CENEL
6、EC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CE
7、N member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN mem
8、bers are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, S
9、witzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No.
10、EN ISO 1167-4:2007: EEN ISO 1167-4:2007 (E) Foreword This document (EN ISO 1167-4:2007) has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“ in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting syst
11、ems” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. This docume
12、nt supersedes EN 921:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary
13、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1167-4:2007 has been approved by CEN as a EN ISO 1167-4:2007 without any modifica
14、tion. BS EN ISO 1167-4:2007ISO 1167-4:2007(E) iiiContents Page Foreword iv 1 Scope 1 2 Normative references 1 3 Principle1 4 Test pieces .2 4.1 Sampling.2 4.2 Fused assemblies2 4.3 Mechanical end-load-bearing assemblies.3 4.4 Adhesively bonded assemblies .3 4.5 Non-end-load-bearing assemblies.4 4.6
15、Free length of pipes.5 4.7 Testing of tolerance variations.5 4.8 Measurement of dimensions 5 Bibliography 6 BS EN ISO 1167-4:2007ISO 1167-4:2007(E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wor
16、k of 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-governme
17、ntal, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The m
18、ain task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. A
19、ttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1167-3 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the
20、 transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and their accessories Test methods and basic specifications. ISO 1167 consists of the following parts, under the general title Thermoplastics pipes, fittings and assemblies for the conveyan
21、ce of fluids Determination of the resistance to internal pressure: Part 1: General method Part 2: Preparation of pipe test pieces Part 3: Preparation of components Part 4: Preparation of assemblies BS EN ISO 1167-4:20071Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Deter
22、mination of the resistance to internal pressure Part 4: Preparation of assemblies 1 Scope This part of ISO 1167 specifies the procedure for the preparation of both end-load-bearing and non-end-load-bearing assemblies, for the determination of their resistance to internal hydrostatic pressure accordi
23、ng to ISO 1167-1. NOTE The assemblies consist of a selection of pipes, fittings, valves, fusion joints or adhesively bonded joints. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
24、For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method ISO 3126, Plastics piping syste
25、ms Plastics components Determination of dimensions ISO 11413, Plastics pipes and fittings Preparation of test piece assemblies between polyethylene (PE) pipe and electrofusion fitting ISO 11414, Plastics pipes and fittings Preparation of polyethylene (PE) pipe/pipe or pipe/fitting test piece assembl
26、ies by butt fusion EN 1066, Adhesives Sampling EN 1067, Adhesives Examination and preparation of samples for testing 3 Principle Test pieces comprising a selection of pipes, fittings, valves, fusion joints or adhesively bonded joints connected to form a pressure-resistant assembly are conditioned at
27、 the specified test temperature and then subjected to the internal hydrostatic pressure according to ISO 1167-1 for a specified period of time, or until the test piece(s) fail(s). The number of test pieces, conditioning and details of the test report are as given in ISO 1167-1. BS EN ISO 1167-4:2007
28、ISO 1167-4:2007(E) 2 NOTE It is assumed that the following test parameters are set by the standard making reference to this part of ISO 1167 and, respectively, to ISO 1167-1: a) the sampling requirements (see 4.1); b) the joining conditions (see 4.2.4); c) the temperature at which the test piece is
29、to be assembled, as appropriate (see 4.3.1); d) diametrical clearance (difference in diameter between mean inside diameter of the socket and mean outside diameter of the pipe) (see 4.4.1); e) setting time (time between the application of the adhesive and the start of the test) (see 4.4.1 and 4.4.3);
30、 f) curing conditions (temperature, air humidity) (see 4.4.1); g) machining of components to simulate assembly tolerance variations, if necessary (see 4.7). 4 Test pieces 4.1 Sampling The sampling requirements shall be as specified in the relevant product standards. The period of time between the da
31、te of production of the parts and the tests, which will depend on the type of material, shall be as given in the general specifications for the material. For materials where no general specifications are available, the minimum time between production and testing shall be as specified in the conditio
32、ning requirements. A test piece may consist of several types of assembly, e.g. fused, mechanical or adhesively bonded assemblies. In such cases, the specific requirements of each assembly type shall be complied with. 4.2 Fused assemblies 4.2.1 Constitution of fused assemblies A test piece may compri
33、se any of the following three configurations: a) two pipes assembled directly together by butt fusion; b) a component and pipes, assembled by fusing a pipe to each end of the component; c) an assembly of pipes and several components assembled by fusion (test tree). The evaluation of the component in
34、 configuration c) shall only be performed on that part of the component where the free length of the attached pipes conforms to the requirements of 4.6. 4.2.2 Pipes Wherever possible, pipes in accordance with the relevant standards shall be used and shall be cut in such a way that their ends are per
35、pendicular to the axis of the pipe, free from grooving, cavities or the presence of impurities, and clean, free of grease and dry. BS EN ISO 1167-4:2007ISO 1167-4:2007(E) 34.2.3 Components The component to be tested shall be clean, free of grease and dry. 4.2.4 Fusion of pipes and components Pipes a
36、nd components shall be jointed according to the manufacturers instructions and under the conditions given in the product standard. For PE assemblies, the conditions given in ISO 11413 for electrofusion or ISO 11414 for butt fusion shall be taken into account. NOTE Specifications for appropriated equ
37、ipment can be found in ISO 12176-1 for butt fusion and in ISO 12176-2 for electrofusion. 4.3 Mechanical end-load-bearing assemblies 4.3.1 General Unless otherwise specified in the referring standard, mechanical test piece assemblies shall be constructed at ambient temperature. Test piece assembly sh
38、all be carried out in accordance with written instructions supplied by the component manufacturer. The assembly method shall form part of the test report. Preheating of pipes to facilitate assembly shall be carried out with care in accordance with the component manufacturers instructions. Care shall
39、 also be taken to avoid thermal degradation. Assembly lubricants shall not be applied unless specified by the component manufacturer. Lubrication shall only be applied in accordance with the manufacturers assembly instructions. Components designed for machine-assisted assembly shall not be assembled
40、 by hand. Only assembly tools and associated instructions specified by the component manufacturer shall be utilized. 4.3.2 Pipes Wherever possible, pipes in accordance with the relevant standards shall be used and shall be cut in such a way that their ends are perpendicular to the axis of the pipe,
41、free from grooving, cavities or the presence of impurities, and clean, free of grease and dry. 4.3.3 Assembly of pipes and components As applicable, components shall be assembled to pipe using the values of tightening torque specified by the manufacturer. Torque values shall be measured using approp
42、riate tools and recorded. Re-tightening of joints before leakage testing is not permissible. 4.4 Adhesively bonded assemblies 4.4.1 General The following parameters are set by the standard making reference to this part of ISO 1167: a) diametrical clearance (difference in diameter between mean inside
43、 diameter of the socket and mean outside diameter of the pipe); BS EN ISO 1167-4:2007ISO 1167-4:2007(E) 4 b) setting time (time between the application of the adhesive and the start of the test); c) curing conditions (temperature, air humidity). Where a diametrical clearance is required, the interna
44、l surface of the socket of the component shall be machined in order to obtain the required value. 4.4.2 Preparation of the assembly The surfaces of the pipes and components shall be prepared in accordance with the instructions of the adhesive manufacturer, with the parts of the assembly cut in such
45、a way that their ends are perpendicular to the axis of the pipe, free from grooving, cavities or the presence of impurities, and clean, free of grease and dry. The parts of the assembly shall be conditioned at a temperature of (23 2) C and a relative humidity of (50 5) % for at least 6 h, unless oth
46、erwise specified. 4.4.3 Bonding of the assembly The adhesive shall be prepared in accordance with the adhesive manufacturers instructions. Unless otherwise specified, a sample of the adhesive shall be taken according to EN 1066 and the adhesive shall be examined and prepared according to EN 1067. Th
47、e adhesive shall be applied and the assembly built, in accordance with the manufacturers instructions, in a draught-free area at a temperature of (23 2) C and a relative humidity of (50 5) %, unless otherwise specified. Any excess of adhesive on the exterior of the contact surface shall be removed w
48、ith clean tissue paper. The bonded assemblies shall be stored in a well-ventilated area for the specified setting time. The setting time shall be counted from the end of the insertion operation. Unless otherwise specified, the following setting times for adhesive joints are recommended: PVC-U 20 day
49、s at (23 2) C followed by four days at (60 2) C; PVC-C 20 days at (23 2) C followed by four days at (80 2) C; ABS 20 days at (23 2) C followed by four days at (40 2) C. The assembly method and the complete identification of the adhesive shall be included in the test report. 4.5 Non-end-load-bearing assemblies The test piece shall comprise an assembly containing at least one pipe sample joined to a socket of a component or to a socketed pipe, with the pipe cut in such a way that th
