1、BRITISH STANDARDBS EN ISO 1167-1:2006Incorporating corrigendum May 2008Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General methodICS 23.040.45; 23.040.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g
2、37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 1167-1:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2008ISBN
3、978 0 580 62285 4National forewordThis British Standard is the UK implementation of EN ISO 1167-1:2006. It is identical with ISO 1167-1:2006. Together with BS EN ISO 1167-2:2006, it supersedes BS 2782-11:Method 1127P:1997 which is withdrawn. Together with BS EN ISO 1167-2:2006, BS EN ISO 1167-3:2007
4、 and BS EN ISO 1167-4:2007, it supersedes BS EN 921:1995 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic pipes, to Subcommittee PRI/88/4, Test methods.A list of organizations represented on this subcommittee can be obtained on request t
5、o its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate Comments30 M
6、ay 2008 Supersession details updated in national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1167-1February 2006ICS 23.040.45; 23.040.20 Supersedes EN 921:1994 English VersionThermoplastics pipes, fittings and assemblies for theconveyance of fluids - Determination of the resistance
7、 to internalpressure - Part 1: General method (ISO 1167-1:2006)Tubes, raccords et assemblages en matiresthermoplastiques pour le transport des fluides -Dtermination de la rsistance la pression interne - Partie1: Mthode gnrale (ISO 1167-1:2006)Rohre, Formstcke und Zubehr aus thermoplastischenKunststo
8、ffen fr den Transport von Flssigkeiten -Bestimmung der Widerstandsfhigkeit gegen innerenberdruck - Teil 1: Allgemeines Prfverfahren (ISO 1167-1:2006)This European Standard was approved by CEN on 23 January 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
9、 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 Central Secretariat or to any CEN member.This European Standard exists in
10、 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of A
11、ustria, Belgium, 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, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR
12、STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 1167-1:2006: EForeword This document (EN ISO 1
13、167-1:2006) 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 systems“, the secretariat of which is held by NEN. This European Standard shall
14、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 national standards shall be withdrawn at the latest by August 2006. This document supersedes EN 921:1994. According to the CEN/CENELEC Internal Regu
15、lations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N
16、orway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1167-1:2006 has been approved by CEN as EN ISO 1167-1:2006 without any modifications. BS EN ISO 1167-1:2006iiiContents Page Introduction v 1 Scope . 1 2 Normative r
17、eferences . 1 3 Terms and definitions. 1 4 Principle. 2 5 Apparatus 2 6 Test pieces 4 6.1 Preparation of test pieces 4 6.2 Number of test pieces 4 7 Calculation of test pressure 4 7.1 General. 4 7.2 Pressure calculations based on the measured dimensions of the test piece . 5 7.3 Pressure calculation
18、s based on the nominal dimensions of the test piece. 5 7.4 Pressure calculations based on SDR of pipe(s) of the test piece . 5 8 Calibration and accuracy of the apparatus 6 9 Conditioning 6 10 Test procedure 6 11 Test report . 7 BS EN ISO 1167-1:2006blankvIntroduction Tests for determining resistanc
19、e 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 long-term characteristics. Many International Standards contain requirements for the determination of the resistance
20、 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 test report. In order to avoid unnecessary repetition, it is desirable to group together all these documents and to
21、 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 and the test report. ISO 1167-2, ISO 1167-3 and ISO 1167-4 describe the method of preparation of test pieces corres
22、ponding to each case considered: pipes, components or assemblies. BS EN ISO 1167-1:2006blank1Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method 1 Scope This part of ISO 1167 specifies a general test m
23、ethod for determining the resistance to 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 referenc
24、ed documents are indispensable for the application 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
25、conveyance of fluids Determination of the 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, Th
26、ermoplastics pipes, fittings and assemblies 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 Determinat
27、ion of the long-term hydrostatic strength 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 u
28、nit 3.2 standard dimension ratio SDR ratio of the nominal outside diameter dnof a pipe to its nominal wall thickness en1) To be published. BS EN ISO 1167-1:20062 4 Principle After conditioning, test pieces are subjected to a specified constant internal hydrostatic pressure for a specified period of
29、time or until a test piece or pieces fail. 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 s
30、pecified by the standard or specification 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)
31、the test pressure, p, or the circumferential (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 requiremen
32、ts, if any, which determine the initiation 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
33、. The end caps shall be one of the following 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 diame
34、ter pipe, optionally fused when flanges, 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
35、 thrust to the test piece. They may comprise 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 rod
36、s shall be avoided during the test. In 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 u
37、nder test and such materials should therefore 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 accord
38、ance with ISO 9080. NOTE It is recognized that times to failure can be different depending upon the type of end caps used. BS EN ISO 1167-1:20063a) 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
39、 as specified in the referring standard 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 a
40、nd the material(s) of the test piece. 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 t
41、he specified limits e.g. by using forced 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. dete
42、rgents, lubricants. 5.3 Support or 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 req
43、uired pressure gradually and smoothly 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 specif
44、ied limits. The pressure should preferably 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 BS EN ISO 1167-1:20064 danger of interference when failure occurs (e.g. by t
45、he use of an isolation valve or a 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 meas
46、urement devices, capable of checking 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 c
47、ase of dispute, the reference level 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 pres
48、sure 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 duration of the pressure applications up to the mo
49、ment of failure or leakage, to within 0,5 % of the expected testing time. 6 Test pieces 6.1 Preparation of test pieces The preparation of test pieces shall conform to ISO 1167-2, ISO 1167-3 or ISO 1167-4, as applicable. Measure and record test piece component parameters, e.g. preparation conditions, dimensions, as necessary. 6.2 Number of test pieces Prepare a minimum of three test pieces unless otherwise specified in the referring standard or specification. 7 Calculation of test pressure 7.1 General For material testing, the test
