BS EN 804-1995 Plastics piping systems Injection-moulded socket fittings for solvent-cemented joints for pressure piping Test method for resistance to a short-term internal hydrost.pdf

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1、BRITISH STANDARD BS EN 804:1995 BS 2782-11: Method 1123K:1995 Plastics piping systems Injection-moulded socket fittings for solvent-cemented joints for pressure piping Test method for resistance to a short-term internal hydrostatic pressure The European Standard EN 804:1994 has the status of a Briti

2、sh Standard UDC 621.643.413.06-986:678.073:620.162.4BSEN 804:1995 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 on 15 July 1995 BSI 11-1999 The following BSI r

3、eferences relate to the work on this standard: Committee reference PRI/61 Draft for comment 92/45391 DC ISBN 0 580 24222 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/61, Plastics piping systems and components, up

4、on 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) Department of the Environment (Building Resear

5、ch 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 Materials Institution of Civil Engineers Institution

6、 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 Gas Industries Society of British Water Industries Water Com

7、panies 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 RAPRA Technology Ltd. Amendments issued since pub

8、lication Amd. No. Date CommentsBSEN 804:1995 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 4BSEN 804:1995 ii BSI 11-1999 National foreword This British Standard ha

9、s been prepared by Technical Committee PRI/61 and is the English language version of EN 804:1994 Plastics piping systems Injection-moulded socket fittings for solvent-cemented joints for pressure piping Test method for resistance to a short-term internal hydrostatic pressure published by the Europea

10、n Committee for Standardization (CEN). It is incorporated into BS 2782 Methods of testing plastics Part 11 Thermoplastics pipes, fittings and valves, as Method 1123K:1995, for association with related test methods for plastics materials and plastics piping components. This test method has been prepa

11、red for reference by other standards under preparation by CEN for specification of plastics piping systems and components. It has been implemented to enable experience of the method to be gained and for use for other fresh applications. It is also for use for the revision or amendment of other natio

12、nal standards as practicable, but it should not be presumed to apply to any existing standard or specification which contains or makes reference to a different test method until that standard/specification has been amended or revised to make reference to this method and adjust any requirements as ap

13、propriate. WARNING NOTE. This British Standard, which is identical with EN804:1994, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should

14、be operated by trained personnel only. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Su

15、mmary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside fron

16、t cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 804 April 1994 UDC 621.643.413.06-986:678.073:620.162.4 Descriptors: Plastics, fittings, socket, injection mouldings, pressure, solvent cemented, joint, internal pressure, hydrostatic, test English version Plastics piping systems Injection

17、-moulded socket fittings for solvent-cemented joints for pressure piping Test method for resistance to a short-term internal hydrostatic pressure Systmes de canalisations en plastiques Raccords mouls par injection joints colls pour canalisations avec pression Mthode dessai de la rsistance une pressi

18、on hydrostatique interne de courte dure Kunststoff-Rohrleitungssysteme Spritzgu- Formstckemit Klebmuffenverbingdungen fr Druckrohrleitungen Prfverfahren fr die Widerstandsfhigkeit gegen hydrostatischen Kurzzeit- Innendruck This European Standard was approved by CEN on 1994-04-11. CEN members are bou

19、nd 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 application to the C

20、entral 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 Secretariat has the same status

21、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 United Kingdom. CEN European Committee for Standardization Comit

22、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 804:1994 EEN804:1994 BSI 11-1999 2 Foreword This standard has been prepared by CEN/TC 155, Plastics piping systems and ducting systems.

23、This standard is based on the International Standard ISO 2044:1974 Unplasticized polyvinyl chloride (PVC) injection-moulded solvent-welded socket fittings for use with pressure pipe Hydraulic internal pressure test, published by the International Organization for Standardization (ISO). It is a modif

24、ication of ISO 2044:1974 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: The material-dependent parameters and/or performance requirements are incorporated in the system standard

25、(s) concerned. No existing European Standard is superseded by this standard. This standard is one of a series of standards 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 b

26、y publication of an identical text or by endorsement, at the latest by October 1994, and conflicting national standards shall be withdrawn at the latest by October 1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria,

27、 Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. no material is mentioned; test parameters, except those common to all plastics, are omitted; editorial changes have been introduced.EN

28、804:1994 BSI 11-1999 3 1 Scope This standard specifies a method for testing the resistance to internal hydrostatic pressure at20 C of injection-moulded thermoplastics fittings for connecting, by means of solvent cementing, to pressure pipes of the same type of material, having a nominal diameter, d

29、n , less than or equal to315mm. This method is intended for testing fittings over a period of the order of1hto10h at a pressure which is material-dependent and typically several times higher than the nominal pressure of the fitting. 2 Principle A specified pressure is applied for a specified period

30、at(20 2) C to a test piece consisting of the fitting solvent-cemented to a section of pipe of the same type of material. The test piece is inspected for signs of failure of the fitting. NOTEIt is assumed that the following test parameters are set by the standard making reference to this standard: a)

31、 the test pressure, p, generally expressed as a multiple, not necessarily integer, of the nominal pressure rating of the fitting; b) the period of time, t, that the test piece is subjected to pressure. 3 Apparatus 3.1 Pressurizing device, including thermostatic and/or environmental controls, capable

32、 of maintaining the specified hydrostatic pressure, p, see item a) of the note to clause 2 to within 2,5 %, for the specified period of time, see item b) of the note to clause 2, and of maintaining the test piece at (20 2) C. 3.2 Pressure gauge, capable of checking conformity to the specified test p

33、ressure, p (see 3.1). 4 Test piece The test piece shall comprise an assembly of one or more pipe sections and fittings including at least one fitting of the type to be tested, solvent-cemented to pipe of the same type of material. Unless otherwise specified in the referring standard the section(s) o

34、f pipe to be connected shall have a length of three times d nwith a minimum of250mm. They shall be capable of withstanding the test pressure, p, required by the referring standard. Assembling of the test piece shall be carried out in accordance with the manufacturers instructions. Unless a longer pe

35、riod is required in accordance with the manufacturers instructions, a period of at least10days shall be allowed to ensure satisfactory setting of the joint before the following procedure is applied. 5 Procedure In any convenient order carry out the following steps. a) Connect the end of one of the p

36、ipe sections of the test piece to the pressurizing device (see 3.1). b) Close by appropriate means the ends of the test piece. c) Fill the test piece with water at(20 2) C, taking care to bleed off all internal air. Wait for at least20min after filling, to ensure equalization of the temperature to(2

37、0 2) C. Suspend or support the test piece so that stresses induced in the test piece by hydrostatic test pressure are not affected by external forces. Apply hydrostatic pressure progressively in such a way that the test pressure, p, is reached in not less than30s and not more than 300s. Maintain the

38、 test piece environment at(20 2) C for the specified period, t, or until prior failure occurs. Maintain the pressure, p, for the specified period, t, checking by means of the pressure gauge that the pressure is within 2,5% and ensuring that no leakage occurs at any area of the test piece, unless pri

39、or failure occurs. Inspect the test piece for signs of deterioration, leakage, fracture or any other form of failure as specified by the referring standard. Record the results accordingly. Repeat the test if a pipe bursts or if the solvent-cemented joint(s) leak(s) within the specified period of tim

40、e.EN 804:1994 4 BSI 11-1999 6 Test report The test report shall include the following information: a) a reference to this standard and to the referring standard; b) the size, type and nominal pressure of the fitting and the material from which the fitting is made; c) the identity of the batch or pro

41、duction run from which the fitting was sampled; d) the type of pipe(s) solvent-cemented to the fitting and the material(s) from which the pipe(s) is(are) made; e) the test pressure, p, in bars 1) ; f) the period of time, t, in hours, during which the test piece was subjected to pressure; g) the test

42、 temperature, in degrees Celsius; h) whether or not the fitting and/or its joints exhibited any signs of deterioration, leakage, fracture or any other form of failure as specified by the referring standard; i) if applicable, observations of any failure causing repetition of the test; j) any factors

43、which may have affected the results, such as any incidents or any operating details not specified in this standard; k) the date of test. 1) 1 bar = 10 5N/m 2 .blankBS EN 804:1995 BS 2782-11: Method 1123K:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independ

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