BS EN 714-1995 Thermoplastics piping systems Non-end-load-bearing elastomeric sealing ring type joints between pressure pipes and moulded fittings Test method for leaktightness und.pdf

1、BRITISH STANDARD BS EN 714:1995 BS 2782-11: Method 1123F:1995 Thermoplastics piping systems Non-end-load-bearing elastomeric sealing ring type joints between pressure pipes and moulded fittings Test method for leaktightness under internal hydrostatic pressure without end thrust The European Standard

2、 EN 714:1994 has the status of a British Standard UDC 621.643.4-036.074:621.643.2-98:62-76:620.165.29BSEN714:1995 This British Standard, having been prepared under the directionof the Sector Board forMaterials and Chemicals, waspublished under the authorityof the Standards Boardand comes into effect

3、 on 15May1995 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference PRI/61 Draft for comment 92/41354 DC ISBN 0 580 23967 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/6

4、1, Plastics piping systems and components, upon which the following bodies were represented: British Gas plc British Plastics Federation British Plumbing Fittings Manufacturers Association British Valve and Actuator Manufacturers Association Department of the Environment (British Board of Agrment) D

5、epartment of the Environment (Building Research Establishment) Department of the Environment (Property and Buildings Directorate) Department of Transport Electricity Association Federation of Civil Engineering Contractors Health and Safety Executive Institute of Building Control Institute of Materia

6、ls Institution of Civil Engineers Institution of Gas Engineers Institution of Water and Environmental Management National Association of Plumbing, Heating and Mechanical Services Contractors Pipeline Industries Guild Plastics Land Drainage Manufacturers Association Society of British Water Industrie

7、s Water Companies Association Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and panels: ERA Technology Ltd. Engineering Equipment and Materials Users Association Amendments issued since publication Am

8、d. No. Date CommentsBSEN714:1995 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Principle 3 3 Apparatus 3 4 Test piece 3 5 Procedure 3 6 Test report 4 Figure 1 Illustration of method of connection 3BSEN714:1995 ii BSI 11-1999 Nationa

9、l foreword This British Standard has been prepared by Technical Committee PRI/61 and is the English language version of EN714:1994 Thermoplastics piping systems Non-end-load-bearing elastomeric sealing ring type joints between pressure pipes and moulded fittings Test method for leaktightness under i

10、nternal hydrostatic pressure without end thrust, published by the European Committee for Standardization (CEN). It is incorporated into BS2782 Methods of testing plastics Part 11: Thermoplastics pipes, fittings and valves, as Method1123F:1995. It is a new method intended for use in conjunction with

11、European Standards under preparation for plastics piping specifications and for any new or revised UK piping standards for which it is considered applicable. WARNING. This British Standard which is the English language version of EN714:1994 does not necessarily detail all the precautions necessary t

12、o meet the requirements of the Health and Safety at Work etc. Act1974. Attention should be paid to any appropriate safety precautions and the method should be operated only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contract. Users of Briti

13、sh Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theENtitle page, pages2 to4 and a back cover. This st

14、andard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN714 April1994 UDC 621.643.4-036.074:621.643.2-98:62-76:620.165.29 Descriptors: Pipelines,

15、 pressure pipes, plastics tubes, pipe fittings, thermoplastic resins, joining, sealing rings, rubber, fluid-tightness test, pressure tests, hydrostatic pressure English version Thermoplastics piping systems Non-end-load-bearing elastomeric sealing ring type joints between pressure pipes and moulded

16、fittings Test method for leaktightness under internal hydrostatic pressure without end thrust Systmes de canalisations thermoplastiques Assemblages bague dtanchit en lastomre sans effet de fond entre tubes avec pression et raccords mouls Mthode dessai dtanchit sous pression hydrostatique interne san

17、s effet de fond Rohrleitungssysteme aus Thermoplasten Nicht zugfeste Verbindungen mit elastomeren Dichtringen zwischen Druckrohren und Formstcken Prfverfahren fr die Dichtheit unter hydrostatischen Innendruck ohne Axialbeanspruchung This European Standard was approved by CEN on 1994-04-11. CEN membe

18、rs 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 obtained on applicatio

19、n to the Central Secretariat or to any CEN member. The European Standards exist 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 Secretariat has the sam

20、e status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardizatio

21、n Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 714:1994 EEN714:1994 BSI 11-1999 2 Foreword This standard was prepared by CEN/TC 155, Plastics piping systems and ducting system

22、s. This standard is based on the International Standard ISO3603:1977 Fittings for unplasticized polyvinyl chloride (PVC) for pressure pipes with elastic sealing ring type joints Pressure test for leakproofness, prepared by the International Organization for Standardization (ISO). It is a modificatio

23、n of ISO3603:1977 for reasons of applicability to other plastics materials and/or other test conditions and alignment with texts of other standards on test methods. The modifications are: no specific material is mentioned; test parameters, except those common to all plastics, are omitted; no materia

24、l-dependent requirements are given; editorial changes have been introduced. The material-dependent parameters and/or performance requirements are incorporated in the System Standard(s) concerned. No existing European Standard is superseded by this standard. This standard is one of a series of standa

25、rds on test methods which support System Standards for plastics piping systems and ducting systems. 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 October1994, and conflicting national standards

26、shall be withdrawn at the latest by October1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Un

27、itedKingdom.EN714:1994 BSI 11-1999 3 1 Scope This European Standard specifies a method for testing the leaktightness, under internal hydrostatic pressure without end thrust, of assemblies between fittings with elastomeric sealing rings and thermoplastics components for pressure piping systems. 2 Pri

28、nciple A test piece consisting of a pipe and fitting assembly having at least one joint of the type to be tested is exposed at a specified temperature to a specified internal hydrostatic pressure without associated end thrust. The leaktightness of the assembled joint in air is checked during the tes

29、t period, when the pressure is higher than the nominal pressure for which the pipe is rated. NOTEIt is assumed that the following test parameters are set by the standard making reference to this standard: a) the free length, L, of the pipe in the test assembly (seeclause4 andFigure 1); b) the test t

30、emperature, T, in degrees Celsius (seeclause5); c) the test pressure, p (seeclause5). 3 Apparatus WARNING. It is necessary to take account of the consequences of failure of the components under pressure and to contain the test piece or apparatus accordingly. 3.1 Pressure source, connected to the tes

31、t piece, capable of maintaining a specified internal water pressure to an accuracy of 2%. 3.2 Compensating device, to prevent longitudinal forces being imposed on the test piece by end thrust induced by internal hydrostatic pressure. 3.3 Pressure measuring device, capable of checking conformity of t

32、he test pressure to3.1 and clause5. NOTEMeans may be necessary for control of temperature. 4 Test piece The test piece shall consist of an assembly of pipe-section(s) and fitting(s) or socketed pipe(s) including at least one joint of the type to be tested. Components for the test piece shall not be

33、assembled until at least24h after their production. The assembly shall comprise the combination, within the applicable tolerances, of the smallest available spigot diameter, the largest available socket diameter in the zone of the sealing ring housing and, if not anchored, a seal of the smallest ava

34、ilable cross section. The length(s) of the section(s) of pipe to be connected shall be such that the free length, L, of pipe between sockets and between a socket and the test equipment(s) or terminal seal(s) shall be at least equal to the nominal outside diameter of the pipe with a minimum of250mm u

35、nless otherwise specified in the referring standard (seeFigure 1). The assembly of the joints shall be carried out in accordance with the manufacturers instructions. 5 Procedure Set up the test piece in the test equipment, with seals and supports such that longitudinal stresses will be compensated (

36、see3.2). Fill the test piece with water at the specified temperature T 2 C. Ensure that all air is removed and excluded from the test piece for the remainder of the procedure. Secure the test piece to the apparatus. Wait at least20min, to ensure equalization of temperature. Remove any moisture from

37、the outside surface of the test piece. Apply pressure at a steady rate so as to achieve the specified hydrostatic test pressure, p see item c) of the note to clause2, in (30 5) s, except for testing fittings for pipes of nominal outside diameters greater than630mm. Key L is the free length of the pi

38、pe Figure 1 Illustration of method ofconnectionEN714:1994 4 BSI 11-1999 In such cases, achieve the specified hydrostatic test pressure, p, in the shortest time practicable between30s and300s, depending on the size of the test piece components and capabilities of the pressurizing equipment. Record th

39、e time taken to achieve the test pressure. Maintain the specified temperature, T, within 2 C, and pressure, p, within 2%, while monitoring the apparatus for any indication of a loss of pressure and the test piece for any signs of leakage for a period of at least1h or until prior failure as follows:

40、a) terminate the test and record the observations if the pressure cannot be maintained and the losses occurred at or within one pipe diameter of the joint under test; b) repeat the test if the pipe(s) fail(s) at a position further than one diameter from the joint(s) under test. 6 Test report The tes

41、t report shall include the following information: a) a reference to this standard and to the referring standard; b) the identity of the components e.g. fitting(s), pipe(s), seal(s) comprising the joints under test and their measured dimensions; c) the free length(s), L, of the pipe component(s) of t

42、he test piece, in millimetres; d) the test temperature, T, in degrees Celsius; e) the test pressure, p, in bars 1) ; f) the time taken to achieve the test pressure, p, and the time under pressure, t, in minutes; g) a report of any signs of leakage observed or otherwise a statement that the joint(s)

43、did not leak; h) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard; i) the date of test. 1) 1 bar = 10 5N/m 2 .blankBS EN 714:1995 BS 2782-11: Method 1123F:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsIn

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