DIN EN ISO 8308-2016 Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls (ISO 8308 2015) German version EN ISO 8308 2015《橡.pdf

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1、February 2016 English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.70!%LSI“2414838www.din.d

2、eDIN EN ISO 8308Rubber and plastics hoses and tubing Determination of transmission of liquids through hose and tubing walls (ISO 8308:2015);English version EN ISO 8308:2015,English translation of DIN EN ISO 8308:2016-02Gummi- und Kunststoffschluche mit und ohne Einlagen Bestimmung der Durchlssigkeit

3、 von Schlauchwandungen gegenber Flssigkeiten (ISO 8308:2015);Englische Fassung EN ISO 8308:2015,Englische bersetzung von DIN EN ISO 8308:2016-02Tuyaux et tubes en caoutchouc et en plastique Dtermination de la transmission des liquides travers les parois des tuyaux et des tubes (ISO 8308:2015);Versio

4、n anglaise EN ISO 8308:2015,Traduction anglaise de DIN EN ISO 8308:2016-02SupersedesDIN EN ISO 8308:2008-06 andDIN EN ISO 8308 Corrigendum 1:2009-11www.beuth.deDocument comprises 15 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritati

5、ve.03.16 DIN EN ISO 8308:2016-02 2 A comma is used as the decimal marker. National foreword This document (EN ISO 8308:2015) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemb

6、lies” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Kautschuktechnik (DIN Standards Committee Rubber Technology), Working Committee NA 045-02-12 AA Gummi- und Kunststoffschluche sowie Schlauchleitungen (Spiegelgremium zu CEN/TC 21

7、8, ISO/TC 45/SC 1). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 4671 DIN EN ISO 4671 ISO 4788 DIN EN ISO 4788 ISO 23529 DIN ISO 23529 Amendments This standard differs from DIN EN ISO 8308:2008-06 and DIN EN ISO 8308 Corrigendum 1:20

8、09-11 as follows: a) the standard has been editorially and technically revised; b) in Clause 1, first indent, all tubing sizes are now also included; c) in Subclause 5.2, testing of three test pieces has been specified; d) in Subclause 5.4, the test pressure is now also given in kPa; e) in Subclause

9、 5.7, item b), indication of the testing standard, including year of publication (i.e. ISO 8308:2015) has been specified; f) in Subclause 6.6, item b), indication of the testing standard, including year of publication (i.e. ISO 8308:2015) has been specified. Previous editions DIN EN ISO 8308 1996-01

10、, 2008-06 DIN EN ISO 8308 Corrigendum 1: 2009-11 DIN EN ISO 8308:2016-02 3 National Annex NA (informative) Bibliography DIN EN ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assemblies DIN EN ISO 4788, Laboratory glas

11、sware Graduated measuring cylinders DIN ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods DIN EN ISO 8308:2016-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8308 October 2015 ICS 23.040.70 Supers

12、edes EN ISO 8308:2008English Version Rubber and plastics hoses and tubing - Determination of transmission of liquids through hose and tubing walls(ISO 8308:2015) Tuyaux et tubes en caoutchouc et en plastique - Dtermination de la transmission des liquides travers les parois des tuyaux et des tubes (I

13、SO 8308:2015) Gummi- und Kunststoffschluche mit und ohne Einlagen - Bestimmung der Durchlssigkeit von Schlauchwandungen gegenber Flssigkeiten(ISO 8308:2015) This European Standard was approved by CEN on 29 August 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s

14、tipulate 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 CEN-CENELEC Management Centre or to any CEN member. This Europe

15、an 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are

16、the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roma

17、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by

18、any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8308:2015 EEuropean foreword 31 Scope 52 Normative references . 53 Principle . 53.1 Method A . 53.2 Method B . 54 Test liquid . 55 Method A 65.1 Apparatus . 65.2 Test pieces 65.3 Test temperature 75.4 Test pressure 75.5 Procedure

19、 . 75.6 Expression of results . 75.7 Test report 86 Method B 86.1 Apparatus . 86.2 Test piece 96.3 Test temperature 96.4 Procedure . 96.5 Expression of results 106.6 Test report . 11Contents PageDIN EN ISO 8308:2016-02 EN ISO 8308:2015 (E) 2Foreword .4European foreword This document (EN ISO 8308:201

20、5) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, ei

21、ther by publication of an identical text or by endorsement, at the latest by April 2016, and conflicting national standards shall be withdrawn at the latest by April 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or

22、 CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 8308:2008. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,

23、Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Sw

24、itzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8308:2015 has been approved by CEN as EN ISO 8308:2015 without any modification. DIN EN ISO 8308:2016-02 EN ISO 8308:2015 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of n

25、ational standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Inter

26、national organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those inte

27、nded for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www

28、.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document w

29、ill be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expres

30、sions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommi

31、ttee SC 1, Hoses (rubber and plastics).This fourth edition cancels and replaces the third edition (ISO 8308:2006), which has been technically revised with changes in Clause 1, 5.2, 5.4, 5.7 b) and 6.6 b).DIN EN ISO 8308:2016-02 EN ISO 8308:2015 (E) 4 1 ScopeThis International Standard specifies two

32、methods for the determination of transmission of liquids through hose and tubing walls. Both methods are applicable to rubber and plastics hose and tubing, and comprise: method A, for all hose and tubing sizes and constructions: a practical comparative test, simulating working conditions; method B,

33、for hose and tubing up to 16 mm inside diameter.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition

34、of the referenced document (including any amendments) applies.ISO 4671, Rubber and plastics hoses and hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assembliesISO 4788, Laboratory glassware Graduated measuring cylindersISO 23529, Rubber General procedures f

35、or preparing and conditioning test pieces for physical test methods3 Principle3.1 Method AThis method is carried out on an assembly mounted in a test apparatus fitted with equipment to fill and measure a charged volume of a volatile liquid. The system is put under pressure, and the change in volume

36、measured at 24 h intervals until the change has become constant with time, i.e. an equilibrium state has been reached. The test result is this steady-state evaporation rate, expressed as the volume of liquid lost per hour per unit inside surface area of the hose or tubing.3.2 Method BThis method use

37、s a pressureless reservoir. A length of hose or tubing is attached to the reservoir, the other end of the hose or tubing being plugged. The reservoir is partially filled with test liquid and sealed. The assembly is weighed at the start of the test, and once every 24 h for eight days. The test result

38、 is the maximum mass of liquid lost in any one 24 h period per unit inside surface area of the hose or tubing.NOTE The method accounts for loss by permeation and evaporation and helps to minimize selective permeation of components in a fuel mixture since the liquid is agitated daily.4 Test liquidThe

39、 test liquid shall be that specified in the appropriate product standard.DIN EN ISO 8308:2016-02 EN ISO 8308:2015 (E) 5 5 Method AWARNING Because of the presence of potentially hazardous vapours, ensure that this test is carried out in a well-ventilated area.5.1 ApparatusThe apparatus consists of a

40、nitrogen gas source connected to a pipe system. The gas pressure is controlled by a regulator and pressure gauge.It is essential that the system be provided with a safety valve.The test piece is fixed vertically and is connected to the apparatus at the top via a measuring cylinder conforming to ISO

41、4788 and at the bottom via a charging valve (see Figure 1).Key1 pressurized-nitrogen source2 pressure regulator3 main valve4 safety valve5 pressure gauge6 venting valve7 measuring cylinder8 test piece9 charging valve10 safety shieldFigure 1 Apparatus for method A5.2 Test piecesEach test piece shall

42、be either a hose assembly with a free hose length of 250 mm, or a sample of tubing, in accordance with Figure 2, fitted with suitable couplings and adapters.Three test pieces shall be tested.N1)National footnote: Because of the information provided by the Nationale Kommission fr Arbeitsschutz und No

43、rmung (KAN) (National Commission for Occupational Health and Safety and Standardization), an extended text of the warning notice is given in the German version. This reads “As hazardous vapours may be present, ensure that this test is carried out under conditions commensurate with the risk assessmen

44、t and safety regulations.” N1)DIN EN ISO 8308:2016-02 EN ISO 8308:2015 (E) 6 Dimensions in millimetresFigure 2 Internal free length, with tolerance, of test piece5.3 Test temperatureThe test temperature shall be one of the standard temperatures defined in ISO 23529, i.e. either (23 2) C or (27 2) C

45、in accordance with national practice.5.4 Test pressureThe test pressure shall be 50 kPa 5 kPa (0,5 bar 0,05 bar) gauge pressure.5.5 Procedure5.5.1 Determine the internal free length, l, as indicated in Figure 2, and the inside diameter, d, as specified in ISO 4671.5.5.2 Connect the test piece to the

46、 test apparatus (see Figure 1).5.5.3 Fill the test piece and the measuring cylinder with test liquid up to the top graduation mark of the measuring cylinder.5.5.4 Maintain the test piece at the test pressure for 5 min, compensating for the dilation of the hose or tubing at the test pressure. Release

47、 the pressure and allow the dissolved nitrogen to escape over a period of 5 min, then record the initial reading, V1, shown by the measuring cylinder.5.5.5 Apply the test pressure.5.5.6 Take measurements after 24 h, 48 h, 72 h and 96 h, using the following method:Close the main valve, then release t

48、he test pressure and wait 5 min before recording the new reading of V1. Close the venting valve, and then open the main valve to re-apply the test pressure.If, after 96 h, the loss in volume per 24 h interval has not stabilized, take another measurement after 120 h (and another after 144 h, if necessary).5.6 Expression of results5.6.1 Calculate the loss in volume for each 24 h interval between measurements, and determine the point at