BS-EN-12256-1998 BS-2782-11-METHOD-1111F-1998.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12256:1998 BS 2782-
2、11: Method 1111F:1998 The European Standard EN 12256:1998 has the status of a British Standard ICS 23.040.45 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plastics piping systems Thermoplastics fittings Test method for mechanical strength or flexibility of fabricated fitting
3、s Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 15:02:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect
4、 on 15 October 1998 BSI 1998 ISBN 0 580 29346 7 BS EN 12256:1998 Amendments issued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 12256:1998. It is also incorporated into BS 2782 Methods of testing Plastics: Part 11: Thermopl
5、astics pipes, fittings and valves, as Method 1111F:1998, for association with related test methods for plastics materials and plastics piping systems. The UK participation in its preparation was entrusted to Technical Committee PRI/61, Plastics piping systems and components, which has the responsibi
6、lity to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organization
7、s represented on this committee can be obtained on request to its secretary. Additional information a) Apparautus (clause 3) For the purposes of 6.1 air pressure or vacuum may be used instead of water as the medium for internal pressure, in which case relevant pneumatic supply and control devices wi
8、ll also be necessary. b) Water temperature When filling the assembly with water in accordance with 6.1 or 6.2, as applicable, it is important that the temperature of the water does not cause the temperature of the test piece to deviate from the specified range of (23 5) C. Hence the water introduced
9、 should be at (23 5) C or the filled assembly should be (re)conditioned at (23 5) C until the assembly and its contents are within that temperature range throughout before commencing to apply the necessary force. c)Procedure When testing in accordance with 6.1 the internal fluid may be water or air
10、pressure or a vacuum. Introduction of air pressure or vacuum as alternatives to water together with rearrangement of the text of the draft for public comment means that as ratified no limits are specified for the internal pressure, nor is any one medium identified for use in case of dispute. For con
11、sistency with 6.2, the UK technical committee makes the following recommendations. 1) When applying and maintaining the necessary force to obtain the specified moment, the internal water or air pressure should be equivalent to a water head of between 200 mm and 300 mm above the critical point. 2) If
12、 inspection is performed after relaxing the force or displacement, the internal water or air pressure or vacuum, as applicable, should be equivalent to a water head of between 200 mm and 300 mm above the critical point. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 15:02:36 GMT+00:00 2006,
13、Uncontrolled Copy, (c) BSI BSI 1998i BS EN 12256:1998 3) In case of dispute, the internal medium should be water, unless otherwise specified in the referring standard. Cross-references The British Standards which implement international or European publications referred to in this document may be fo
14、und in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Warning note: This British Standard, which is identical with EN 12256:1998, does not necessarily detail all the precaut
15、ions 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 operated only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contrac
16、t. Users of British 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, pages i and ii, the EN title page, pages 2 to 5 an
17、d a back cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 15:02:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iiblank Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 15:02:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de
18、 Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12256:1998 E EUROPEAN STANDARDEN12256 NORME EUROPE ENNE EUROPA ISCHE NO
19、RM May 1998 ICS 23.040.45 Descriptors: plastic tubes, pipe fittings, thermoplastic resins, sanitation, buried pipes, tests, mechanical strength, flexibility English version Plastics piping systems Thermoplastics fittings Test method for mechanical strength or flexibility of fabricated fittings Syste
20、 mes de canalisations en plastique Raccords thermoplastiques Me thode dessai de la re sistance me canique ou de la flexibilite des raccords faonne s Kunststoff-Rohrleitungssysteme Formstu cke aus Thermoplasten Pru fverfahren der mechanischen Festigkeit oder Elastizita t von handgefertigten Formstu c
21、ken This European Standard was approved by CEN on 9 January 1998. 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
22、references concerning 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 memb
23、er into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portu
24、gal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 15:02:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 12256:1998 BSI 1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 155 Plastics piping systems and
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- BS-EN-12256-1998 BS-2782-11-METHOD-1111F-1998 BS EN 12256 1998 2782 11 METHOD 1111
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