EN 802-1994 en Plastics Piping and Ducting Systems - Injection-Moulded Thermoplastics Fittings for Pressure Piping Systems - Test Method for Maximum Deformation by Crushing《塑料管道和管道.pdf

1、CEN EN*8OE! 94 3404589 0100168 674 - -_- -#.A BRITISH STANDARD Plastics piping and ducting systems - Injection-moulded thermoplastics fittings for pressure piping systems - Test method for maximum deformat ion by crushing The European Standard EN 802 : 1994 has the status of a British Standard UDC 6

2、21 643.06-9X6:678-073.620.173 HS EN WL : 1995 BS 2782 : Part 11 : Method 1114F : 1995 CEN EN*802 94 m 3404589 OLOOLb9 500 m BS EN 802 : 1995 published under the authority of the Standards Board and Amd. No. Date comes into effect on 15 July 1995 O BSI 1995 The following BSI references relate to the

3、work on this standard: Committee reference PRI/61 Draft for comment 92/45389 DC ISBN O 680 24227 7 Committees responsible for this British Standard lxt affected The preparation of this British Standard was entrusted to lchnical Committee PRI/61, Plastics piping systems and components, upon which the

4、 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 Research Establish

5、ment) 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 of Gas Engi

6、neers Institution of Water and Environmental Management National Association of Plumbing, Heating and Mechanical Services Pipeline Industries Guild Plastics Land Drainage Manufacturers Association Society of British Gas Industries Society of British Water Industries Water Companies Association Water

7、 Services Association of England and Wales Contractors The following bodies were also represented in the drafting of the standard, through subcommittees and panels: ERA lchnology Ltd. Engineering Equipment and Materials Users Association RAPRA Tchnology Ltd . Contents Committees responsible Page Ins

8、ide front cover National foreword ii Method Fore word 2 Introduction 2 1 Scope 3 2 Principle 3 3 Apparatus 3 4 Test pieces 3 5 Conditioning 3 6 Procedure 3 7 Test report 4 1 CEN ENM802 94 m 3404589 010017L lb7 BS EN 802 : 1995 National foreword This British Standard has been prepared under the direc

9、tion of the Sector Board for Materials and Chemicals and is the English language version of EN 802 : 1994 Phtics piping and ducting systems - Injection-moulded thermoplastics fittings for pressure piping systems - Dst method for maximum deformation by crushing, published by the European Committee fo

10、r Standardization (CEN). It is incorporated into BS 2782 Methods of testing plastics Part 11 %ermoplastics pipes, fittings and valves, as Method 11 14F : 1995, for association with related test methods for plastics materials and plastics piping components. This test method has been prepared for refe

11、rence 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 national standard

12、s 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 appropriate. W

13、arning note. This British Standard, which is identical with EN 802 : 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 be operat

14、ed by trained personnel only. Compliance with a British Standard does not of itself confer immunity from legal obligations. ii CEN EN*802 94 m 3404589 OLOO172 OT5 W EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 802 April 1994 UDC 62 lt643.O6-C)86: 678.073: 620.173 Descriptors: Plastics, therm

15、oplastics, piping, fitting, iqjection-moulding, pressure, crushing, test English version Plastics piping and ducting systems - Injection-moulded therrnoplastics fittings for pressure piping systems - Test method for maximum deformation by crushing Systmes de canalisations et de gaines en plastiques

16、- Raccords thermoplastiques mouls par injection pour canalisations avec pression - Mthode dessai de dformation maximale par crasement Kunstsoff-Rohrleitungs- und Schutzrohrsysteme - SpritzguB-Formstcke aus Thermoplasten fr Druckrohrleitungen - Prfverfahren fr die Verformung durch Quetschen This Euro

17、pean Standard was approved by CEN on 1994-04-11. CEN members are bound to comply with the CENKENELEC 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 concern

18、ing such national standards may be 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 la

19、nguage and notified to the Central Secretariat has the same 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 an

20、d United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1994 Copyright reserved to CEN members Ref. No. EN 802 : 1994 E Page 2 EN 802: 1994 CEN ENa802 94 W 3404589 OLOOL73 73

21、1 W Foreword This standard was prepared by CENTC 155, Plastics piping systems and ducting systems. This standard is based on ISO/DIS 9853 : 1989 Injection-moulded unplastkized poly(wny1 chloride) (PVC- U) fittings for pressure pipe systems - Crushing test und basic specifkution, prepared by the Inte

22、rnational Organization for Standardization (ISO). It is a modification of ISO/DIS 9853 : 1989 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 material is mentioned; - test p

23、arameters, except those common to all plastics, are omitted; - no material-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

24、 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 by publication of an identical text or by end

25、orsement, at the latest by October 1994, and conflicting national standards shall be withdrawn at the latest by October 1994. According to the CENXENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany,

26、Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Introduction This method of test was initially developed for use with unplasticized poly(viny1 chloride) (PVC-U) fittings, which can be crushed without failure if they contain l

27、ittle residual stress as a result of the moulding process. However, if these stresses are too great, such fittings will break while a crushing force is applied. The selection of a given percentage deformation of a fitting, in relation to its initial diameter, constitutes a simple criterion for selec

28、ting PVC-U fittings which have an acceptable level of internal stresses. The method is particularly applicable to PVC-U fittings for pressure pipelines, with solvent sockets or with sockets with elastic sealing rings, but may be applicable to fittings of other materials, through reference by the rel

29、evant System Standard. 1 Scope This standard specifies a method for applying a crushing test to injection-moulded thermoplastics fittings intended for pressure piping systems to determine whether or not fracture will occur at a specified deformation. 2 Principle The fitting to be tested is placed be

30、tween two plates of a press and subjected at a constant speed to the necessary force to give a specified percentage deformation (see 6.5). The fitting is monitored for fracture before or when the specified deformation has been reached and, if applicable, the type of fracture is determined. NUTE. It

31、is assumed that the following test parameters are set by the standard making reference to this standard: a) the speed of closure of the press plates (see 3.1 and 6.5); b) the minimum period, tl, between manufacture and testing (see 5.1); c) the conditioning period, t2 (see 5.2); d) the percentage de

32、formation, X, to be attained (see 6.4). 3 Apparatus 3.1 Press, capable of applying sufficient force to carry out the test, with a closing speed of the plates that can be controlled to I 10 O/n of the specified closing speed. 3.2 Non-deformable supports, if applicable (see 6.2), to permit the applica

33、tion of the force between the seal ring housing(s) of a fitting, or to a fitting where the shape adjacent to the socket under test is complicated. 3.3 Deformation control or measurement device, capable of setting and/or measuring the amount of deformation applied to the test piece (see 6.4 and item

34、d) of the note to clause 2). 4 Test pieces 4.1 Each test piece shall be a fitting in its condition as manufactured, i. e. without having been subjected to any subsequent process. 4.2 In the case of fittings containing sealing rings, the rings shall be removed before testing. 4.3 Unless otherwise spe

35、cified in the referring standard, test at least three test pieces for each fitting pattern or feature, e.g. socket, cap, reducer, to be tested. If there are weld lines, provide three test pieces for testing in position 1 and another three for testing in position 2 (see 6.2). Page 3 EN 802 : 1994 5 C

36、onditioning 5.1 The fittings shall not be tested until at least ti h after their manufacture (see item b) of the note to clause 2). 5.2 Before testing, condition the test pieces at (23 f 2) OC for at least t2 h (see item c) of the note to clause 2). 6 Procedure 6.1 Carry out the following procedure

37、for at least three test pieces (see 4.3) using any ambient temperature in the range of 15 OC to 25 OC providing that for each test piece the temperature does not vary by more than f 2 OC. 6.2 Place the fitting flat on the centre of the lower plate of the press, in such a way that the axis of the soc

38、ket(s) is (are) parallel to the plane of the plate, using, if necessary, supports conforming to 3.2. If there is a weld line in the fitting and if the shape of the fitting allows it, position the weld line in either position 1 or position 2, as follows, so that at least three test pieces are tested

39、in position 1 and at least three others in position 2: a) position 1: weld line at 90 to the contact lines between the fitting and the plates of the press; b) position 2: weld line in contact with the plates. 6.3 Adjust the mobile plate until both plates, or supports (see 3.2), are in contact with t

40、he fitting, without the application of force. Measure and record the distance ho, in millimetres, between the plates. 6.4 For a specified percentage deformation, X, calculate the limiting distance hl, in millimetres, between the plates, or supports, using the following equation: ho (100 - X) 1 00 hl

41、 = where ho is the distance, in millimetres, between the plates, or supports, when in contact with the test piece, without applying any force (see 6.3). 6.5 Set the closing speed of the plates at the specified speed (see item a) of the note to clause 2) and start the compression. 6.6 Stop the compre

42、ssion when the distance between the plates, or supports, reaches hl mm (see 6.4), or when the test piece fractures, whichever occurs first. If the test piece has fractured, record a description of the type e. brittle or ductile) and position of the fracture. Page 4 EN 802: 1994 CEN EN*802 94 3404589

43、 0100175 804 7 Test report The test report shall include the following information: a) a reference to this standard and to the referring standard; b) the type of fitting and the material of which it is made; c) the nominal diameter of the fitting and any other sizes and identification; d) the type o

44、f socket(s) on the fitting; e) the number of test pieces tested; f) the conditioning period, b, in hours and conditioning temperature, in degrees Celsius; g) whether supports were used or not; h) if applicable, the position of the weld line in relation to the plates; i) the speed of closure of the t

45、est plates, in millimetres per minute; j) the values of ho and hl, in millimetres, and X, as a percentage; k) the result of the test and, if applicable, the type and position of the fracture; 1) any factors which may have affected the results, such as any incidents or any operating details not speci

46、fied in this standard; m) the date of test. BSEN 802 : 1995 BS 2782 : Part 11 : Method 1114F : 1995 BSI 389 Chiswick High Road London W4 4AL 9507-4- U.5k- FP CEN EN*802 9q 3404589 OLOOL76 740 BSI - British Standards Institution MI is the independent national body responsible for preparing British St

47、andards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Contract requirements A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a

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