1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 11114-3:2010Gas cylinders Compatibilityof cylinder and valve materialswith gas contentsPart 3: Autogenous ignition test for non-metallic materials in oxygen atmosphere(
2、ISO 11114-3:2010)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO11114-3:2010. It supersedes BS EN ISO 11114-3:1998 which iswithdrawn.The
3、 UK participation in its preparation was entrusted to TechnicalCommittee PVE/3, Gas containers.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsibl
4、e for its correctapplication. BSI 2011ISBN 978 0 580 65832 7ICS 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2011.Amendments issued since publ
5、icationDate Text affectedLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11114-3 December 2010 ICS 23.020.30 Supersedes EN ISO 11114-3:1997English Version Gas cylinders - Compatibility of cyli
6、nder and valve materials with gas contents - Part 3: Autogenous ignition test for non-metallic materials in oxygen atmosphere (ISO 11114-3:2010) Bouteilles gaz - Compatibilit des matriaux de bouteilles et de robinets avec les contenus gazeux - Partie 3: Essai dauto-inflammation des matriaux non mtal
7、liques sous atmosphre doxygne (ISO 11114-3:2010) Ortsbewegliche Gasflaschen - Vertrglichkeit von Flaschen- und Ventilwerkstoffen mit den in Berhrung kommenden Gasen - Teil 3: Prfung der Selbstentzndungstemperatur von nichtmetallischen Werkstoffen in Sauerstoffatmosphre (ISO 11114-3:2010)This Europea
8、n Standard was approved by CEN on 14 December 2010. 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 references con
9、cerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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 i
10、nto its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ire
11、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix
12、17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11114-3:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010EN ISO 11114-3:201
13、0 (E) 3 Foreword This document (EN ISO 11114-3:2010) has been prepared by Technical Committee ISO/TC 58 “Gas cylinders“ in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the secretariat of which is held by BSI. This European Standard shall be given the status of a nat
14、ional standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
15、ghts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 11114-3:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
16、Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Un
17、ited Kingdom. Endorsement notice The text of ISO 11114-3:2010 has been approved by CEN as a EN ISO 11114-3:2010 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) ISO 2010 All rights r
18、eserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Principle .1 3 Preparation of test samples .1 4 Test apparatus.1 5 Oxygen purity 3 6 Test procedure.3 7 Results4 8 Test record .4 Annex A (informative) Test record sheet.5 Bibliography6 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDAR
19、DS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International S
20、tandards 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. International organizations, governmental and non-governmental, in liaison with ISO, als
21、o take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committe
22、es is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possi
23、bility 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. This part of ISO 11114 was prepared by Technical Committee ISO/TC 58, Gas cylinders. This second edition cancels and replaces the fi
24、rst edition (ISO 11114-3:1997). No significant technical changes have been made. ISO 11114 consists of the following parts, under the general title Gas cylinders Compatibility of cylinder and valve materials with gas contents: Part 1: Metallic materials Part 2: Non-metallic materials Part 3: Autogen
25、ous ignition test for non-metallic materials in oxygen atmosphere Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) ISO
26、 2010 All rights reserved vIntroduction The following test method is referenced in ISO 11114-1 and ISO 11114-2. Further information about oxygen compatibility is given in ISO 11114-1 and ISO 11114-2. Other oxygen compatibility test methods include oxygen index (see ISO 4589-3), heat of combustion an
27、d adiabatic compression on materials (see ISO 21010). Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010INTE
28、RNATIONAL STANDARD ISO 11114-3:2010(E) ISO 2010 All rights reserved 1Gas cylinders Compatibility of cylinder and valve materials with gas contents Part 3: Autogenous ignition test for non-metallic materials in oxygen atmosphere 1 Scope This part of ISO 11114 specifies a test method to determine the
29、autogenous ignition temperature of non-metallic materials in pressurized gaseous oxygen. The autogenous ignition temperature is one criterion for ranking materials, and can be used to assist with the choice of materials used in the presence of gaseous oxygen. A comprehensive bibliography of the publ
30、ished material on which this part of ISO 11114 is based is included. It is intended that this part of ISO 11114 be used for the selection of non-metallic materials for gas cylinders and accessories, for example to select the materials in order to meet the requirement for type testing for oxygen comp
31、atibility of all cylinder valves for highly oxidizing gases as specified in ISO 10297. 2 Principle A small quantity of the test material is heated in pressurized oxygen. A continuous recording is made of pressure and temperature in order to determine the point of autogenous ignition, at which point
32、a sudden increase in temperature and pressure is observed (this point is known as the autogenous ignition temperature). 3 Preparation of test samples Test samples shall be prepared in such a manner as to prevent contamination. Test samples may be in liquid or solid form. In the case of solids, the m
33、aterial shall be finely divided. A sample mass between 0,06 g and 0,5 g is used for each test. This mass should be adjusted to take into consideration the volume of the test reaction chamber. A sample of 0,5 g in a test reaction chamber volume of between 30 cm3and 250 cm3has been found to be suitabl
34、e. 4 Test apparatus Figure 1 gives an example of a suitable test apparatus. The test sample is put into a small, carefully cleaned inert sample holder, placed in a reaction chamber within an electric oven with sufficient power to raise temperature at a constant rate as specified in Clause 6. License
35、d Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) 2 ISO 2010 All rights reservedKey 1 water 2 oxygen 3 cooling coil 4 pressure transducer 5 temperature transducer 6 sample holder 7 reaction chamber 8 electrical heate
36、r 9 test sample Figure 1 Example of apparatus for ignition test A thermocouple shall be positioned as closely as possible to the test sample. The thermocouple shall have an accuracy of 2 C between 25 C and 500 C. A pressure transducer shall be provided. The pressure transducer shall have an accuracy
37、 of 1 % at full scale. A pressure-regulating device may be used if it is intended to keep oxygen pressure constant during the test. The autogenous ignition temperature can depend on oxygen pressure. When the oxygen pressure is increased, the autogenous ignition temperature decreases and stabilizes b
38、eyond a certain pressure. Therefore, for ranking of materials, when the minimum autogenous ignition temperature has to be determined, a starting pressure of 100 bar is recommended. The equipment, and in particular the reaction chamber, shall be designed to resist violent internal reactions (explosio
39、ns). In some designs, the temperature- and pressure-measuring devices could be exposed to the flame from the test sample. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) ISO 2010 All rights reserved 35 Oxyge
40、n purity The oxygen used for the test shall have a purity of at least a volume fraction of 99,5 %. The hydrocarbon content shall be limited to 100 106by volume (volume fraction u104). 6 Test procedure The sample holder containing the test sample is placed into the reaction chamber. The reaction cham
41、ber is then sealed and purged with oxygen to remove any air and any possible residual combustion products from preceding tests. The common purging procedure is to pressurize the reaction chamber to 10 bar and vent to atmospheric pressure and to repeat this procedure three times. The oxygen pressure
42、is then increased to the pressure required for the particular test. The temperature is then raised at a constant heating rate up to the autogenous ignition temperature or up to a maximum temperature of 500 C. The heating rate shall be recorded. If constant pressure is desired, adequate control shall
43、 be performed. From the continuous recording of the two parameters (temperature and pressure), the autogenous ignition temperature is determined, which corresponds to the sudden increase in temperature and pressure caused by the internal reaction (see Figure 2). NOTE The use of a high heating rate (
44、greater then 20 C/min), when using an electrical filament furnace, can result in a lower autogenous ignition temperature than when using the normal heating rate (between 5 C/min and 20 C/min). NOTE Figure 2 shows the temperature and pressure versus time graph for a typical autogenous ignition test c
45、arried out under nearly constant pressure. Key 1 pressure 2 temperature 3 autogenous ignition temperature 4 pFigure 2 Typical autogenous ignition test graph Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) 4
46、ISO 2010 All rights reserved7 Results The autogenous ignition temperature is the temperature, expressed in degrees Celsius, at which the sudden increase in temperature and associated increase in pressure commences. This point is determined from the temperature and pressure versus time recording grap
47、h as illustrated in Figure 2. The magnitude of the increase in temperature, T, and increase in pressure, p, caused by the ignition are determined as illustrated in Figure 2. NOTE 1 In certain cases, as an acceptance criterion, a material can be required to have an autogenous ignition temperature hig
48、her than a specified critical value. NOTE 2 The temperature and pressure increases, T and p (see Figure 2), characterize the violence of the reaction. Special requirements can also apply to these two parameters. NOTE 3 Because the temperature and pressure increases, T and p, are affected by the rela
49、tionship between the size of the sample, the volume of the reaction chamber and the heating capacity of the heater, a comparison between the results from different types of test apparatus cannot easily be made. 8 Test record The test results shall be recorded on a test record sheet, an example of which is shown in Annex A. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 01/07/2011 07:10, Uncontrolled Copy, (c) BSIBS EN ISO 11114-3:2010ISO 11114-3:2010(E) ISO 2010 All rights reserved 5Annex A
