1、 DEUTSCHE NORMMay 2006DIN EN ISO 1167-1 ICS 23.040.20 Together with DIN EN ISO 1167-2:2006-05, supersedes DIN EN 921:1995-01 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method (ISO 1167-1:2006) Englis
2、h version of DIN EN ISO 1167-1:2006-05 Rohre, Formstcke und Bauteilkombinationen aus thermoplastischen Kunststoffen fr den Transport von Flssigkeiten Bestimmung der Widerstandsfhigkeit gegen inneren berdruck Teil 1: Allgemeines Prfverfahren (ISO 1167-1:2006) Englische Fassung DIN EN ISO 1167-1:2006-
3、05 Document comprises 13 pages No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). English price group 9 www.din.de www.beu
4、th.de !,nwu“11.06 9758482DIN EN ISO 1167-1:2006-05 2 National foreword This standard has been published in accordance with a decision taken by CEN/TC 155 to adopt, without al-teration, International Standard ISO 1167-1 as a European Standard. The responsible German body involved in its preparation w
5、as the Normenausschuss Kunststoffe (Plastics Standards Committee), Technical Committee NA 054-05-02 AA Prfverfahren fr Rohre. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as fol-lows: ISO 1167-2 DIN EN ISO 1167-2 ISO 3126 DIN EN ISO 3126 ISO 90
6、80 DIN EN ISO 9080 Amendments This standard differs from DIN EN 921, January 1995 edition, as follows: a) The standard has been editorially revised and divided into four parts. b) Specifications relating to testing are now given in two separate standards. c) Part 1 specifies a general test method. d
7、) Clause 3 Terms and definitions has been included. e) Since ISO 1167 has been adopted in its entirety, the title of the standard has been modified. Previous editions DIN EN 921: 1995-01 National Annex NA (informative) Bibliography DIN EN ISO 1167-2, Thermoplastics pipes, fittings and assemblies for
8、 the conveyance of fluids Determina-tion of the resistance to internal pressure Part 2: Preparation of pipe test pieces (ISO 1167-2:2006) DIN EN ISO 3126, Plastics piping systems Plastics components Determination of dimensions (ISO 3126:2005) DIN EN ISO 9080, Plastics piping and ducting systems Dete
9、rmination of the long-term hydrostatic strength of thermoplastics pipe materials in pipe form by extrapolation (ISO 9080:2003) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1167-1 February 2006 ICS 23.040.45; 23.040.20 Supersedes EN 921:1994 English Version Thermoplastics pipes, fittings
10、and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 1: General method (ISO 1167-1:2006) Tubes, raccords et assemblages en matires thermoplastiques pour le transport des fluides - Dtermination de la rsistance la pression interne - Partie 1: Mthode
11、 gnrale (ISO 1167-1:2006) Rohre, Formstcke und Bauteilkombinationen aus thermoplastischen Kunststoffen fr den Transport von Flssigkeiten - Bestimmung der Widerstandsfhigkeit gegen inneren berdruck - Teil 1: Allgemeines Prfverfahren (ISO 1167-1:2006) This European Standard was approved by CEN on 23 J
12、anuary 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be
13、obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central
14、Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
15、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by a
16、ny means reserved worldwide for CEN national Members. Ref. No. EN ISO 1167-1:2006: EEN ISO 1167-1:2006 (E) 2 Foreword This document (EN ISO 1167-1:2006) has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“ in collaboration with Technic
17、al Committee CEN/TC 155 “Plastics piping systems and ducting systems“, 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 August 2006, and conflicting nationa
18、l standards shall be withdrawn at the latest by August 2006. This document 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, Cyprus, Czech Republi
19、c, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1167-1:2006 has been ap
20、proved by CEN as EN ISO 1167-1:2006 without any modifications. EN ISO 1167-1:2006 (E) 3 Contents Page Foreword .2 Introduction.3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Principle .5 5 Apparatus.5 6 Test pieces .7 7 Calculation of test pressure .7 8 Calibration and accuracy of t
21、he apparatus.9 9 Conditioning 9 10 Test procedure.9 11 Test report10 Introduction Tests for determining resistance to internal pressure are essential for assessing the properties and durability of thermoplastics piping system parts. In fact, they constitute a basis for determining short-term and lon
22、g-term characteristics. Many International Standards contain requirements for the determination of the resistance to pressure of pipes, fittings or assemblies. All these documents describe the equipment for pressurizing the different test pieces considered as well as the testing procedure and the te
23、st report. In order to avoid unnecessary repetition, it is desirable to group together all these documents and to establish one International Standard divided into several parts. ISO 1167-1 contains a description of the equipment used to pressurize test pieces, the testing procedure to be applied an
24、d the test report. ISO 1167-2, ISO 1167-3 and ISO 1167-4 describe the method of preparation of test pieces corresponding to each case considered: pipes, components or assemblies. EN ISO 1167-1:2006 (E) 4 1 Scope This part of ISO 1167 specifies a general test method for determining the resistance to
25、internal hydrostatic pressure at a given temperature of thermoplastics pipes, fittings and piping systems for the transport of fluids. The method accommodates water-in-water, water-in-air and water-in-liquid tests. 2 Normative references The following referenced documents are indispensable for the a
26、pplication of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1167-2:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of th
27、e resistance to internal pressure Part 2: Preparation of pipe test pieces ISO 1167-3, Thermoplastics pipes, fittings and assemblies the conveyance of fluids Determination of the resistance to internal pressure Part 3: Preparation of components 1)ISO 1167-4, Thermoplastics pipes, fittings and assembl
28、ies for the conveyance of fluids Determination of the resistance to internal pressure Part 4: Preparation of assemblies 1)ISO 3126, Plastics piping systems Plastics components Determination of dimensions ISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strengt
29、h of thermoplastics pipe materials in pipe form by extrapolation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 component fitting or valve, in single or multiple form, that is supplied as an integral unit 3.2 standard dimension ratio SDR rat
30、io of the nominal outside diameter dnof a pipe to its nominal wall thickness en1) To be published. EN ISO 1167-1:2006 (E) 5 4 Principle After conditioning, test pieces are subjected to a specified constant internal hydrostatic pressure for a specified period of time or until a test piece or pieces f
31、ail. Throughout the test, the test pieces are kept in an environment at a specified constant temperature: this is either water (“water-in-water” test), another liquid (“water-in-liquid” test) or air (“water-in-air” test). The following test parameters shall be specified by the standard or specificat
32、ion making reference to this part of ISO 1167: a) the type of end cap to be used (see 5.1 and ISO 1167-2:2006, 4.1); b) the test temperature; c) for evaluation purposes, the SDR or S-series or size of pipe or fitting to be used; d) the number of test pieces; e) the test pressure, p, or the circumfer
33、ential (hoop) stress, , to be induced by the test pressure; f) the type of test, i.e. “water-in-water”, “water-in-liquid” or “water-in-air”; g) the duration of the test under pressure and the criteria for a failure; h) the requirements, or patterns of requirements, if any, which determine the initia
34、tion of additional testing. 5 Apparatus 5.1 End caps, fixed to the ends of the test piece. By means of an appropriate system or procedure, end caps shall allow sealing and connection to the pressurizing equipment and shall allow purging of the air before testing. The end caps shall be one of the fol
35、lowing types. Type A: fittings rigidly connected to the test piece but not to each other, and hence transmitting the hydrostatic end thrust to the test piece, e.g. as shown in Figure 1, or equivalent. They may comprise flanged plates on the ends of a large diameter pipe, optionally fused when flange
36、s, caps, plugs or plates are of a compatible material to the test pieces. Type B: sockets, made of metal, fitted with joints ensuring sealing onto the external surface of the test piece and connected to one another, and hence not transmitting the hydrostatic end thrust to the test piece. They may co
37、mprise one or more metal rods, see Figure 1, allowing sufficient longitudinal movement at the ends of the test pieces, to avoid buckling due to thermal expansion. If external rods are used, contact of the outside surface of the test piece with one or several rods shall be avoided during the test. In
38、 this case, the test shall be disregarded. Other than toothed grips, any sharp edges which would come into contact with the outside surface of the pipe shall be rounded off. The constituent material of the end cap might have an adverse effect on the test piece under test and such materials should th
39、erefore be avoided as far as possible. For testing of components, the end caps shall be replaced by pressure-tight devices as specified in ISO 1167-3. End caps of type A shall be used for determination of the long-term hydrostatic strength of materials in accordance with ISO 9080. NOTE It is recogni
40、zed that times to failure can be different depending upon the type of end caps used. EN ISO 1167-1:2006 (E) 6 a) Type A b) Type B Figure 1 Examples of end caps for internal pressure testing 5.2 Tank, filled with water or other liquid, kept at a constant temperature as specified in the referring stan
41、dard to within 1 C, or oven, the temperature of which shall be kept at the specified value to within 21+C. When an environment other than water is used, necessary precautions shall be taken, in particular those concerning safety and any interaction between liquid and the material(s) of the test piec
42、e. When environments other than water are used, tests which are intended to be comparative shall be carried out in the same environment. As the results are strongly influenced by temperature, the tolerance on temperature should be kept as small as possible within the specified limits e.g. by using f
43、orced circulation of the fluid. When testing in air, the pipe surface temperature should be checked in addition to the air. Potable water should be used and it is necessary to avoid contamination of the water by any substance likely to affect the results, e.g. detergents, lubricants. 5.3 Support or
44、hangers, enabling test pieces to be placed in the tank or oven (5.2) such that contact between them or with the sidewalls of the tank/oven is avoided as far as possible so as not to influence the test results. 5.4 Pressurizing equipment, capable of applying the required pressure gradually and smooth
45、ly in accordance with Clause 9 and then of keeping this indicated (or measured) pressure to within 21+% for the duration of the test. As the results are strongly influenced by pressure, the tolerance on pressure should be kept as small as possible within the specified limits. The pressure should pre
46、ferably be applied individually to each test piece. However, the use of equipment enabling the pressure to be applied simultaneously to several test pieces is also permitted if there is no EN ISO 1167-1:2006 (E) 7 danger of interference when failure occurs (e.g. by the use of an isolation valve or a
47、 test based on the first failure in a batch). To maintain the pressure within the specified tolerance, a system should be introduced which automatically controls the pressure within this specified tolerance (e.g. due to expansion of the test piece). 5.5 Pressure measurement devices, capable of check
48、ing conformity to the specified test pressure. The range of the gauge shall be such that the required pressure setting shall lie within the calibrated range of the device used (see Clause 7). The pressure measurement devices shall not contaminate the test fluid. In case of dispute, the reference lev
49、el of the pressure device shall be equal to the water level in the tank. Master gauges for calibration of the apparatus should be used. It is recommended to use equipment which is capable of stopping the timer (5.8) in event of failure or leakage and closing the pressure circuit to the test piece concerned. 5.6 Dimension measuring equipment, conforming to ISO 3126. 5.7 Temperature measuring equipment, capable of checking conformity to the specified test temperature (see 5.2). 5.8 Timer, capable of recording the
