BS EN ISO 11114-2-2013 Gas cylinders Compatibility of cylinder and valve materials with gas contents Non-metallic materials《气瓶 气瓶和瓶阀材料与盛装气体的相容性 非金属材料》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 11114-2:2013Gas cylinders Compatibility of cylinder and valve materials with gas contentsPart 2: Non-metallic materialsBS EN ISO 11114-2:2013 BRITISH STANDARDNational f

2、orewordThis British Standard is the UK implementation of EN ISO 11114-2:2013. It supersedes BS EN ISO 11114-2:2001,which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e P V E / 3 , G a s c o n t a i n e r s .A list of organizations represente

3、d on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 6

4、8976 5 ICS 23.020.30; 23.060.40 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationDate T e x t a f f e c t e dEUROP

5、EAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11114-2 April 2013 ICS 23.020.30 Supersedes EN ISO 11114-2:2000English Version Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 2: Non-metallic materials (ISO 11114-2:2013) Bouteilles gaz - Compatibilit des mat

6、riaux des bouteilles et des robinets avec les contenus gazeux - Partie 2: Matriaux non mtalliques (ISO 11114-2:2013) Gasflaschen - Vertrglichkeit von Flaschen- und Ventilwerkstoffen mit den in Berhrung kommenden Gasen - Teil 2: Nichtmetallische Werkstoffe (ISO 11114-2:2013) This European Standard wa

7、s approved by CEN on 9 February 2013. 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 concerning such n

8、ational 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 into its own la

9、nguage 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, Former Yugoslav Republic of Macedonia, France, Germany, Gree

10、ce, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG

11、Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11114-2:2013: EBS EN ISO 11114-2:2013 EN ISO 11114-2:2013 (E) 3 Foreword This document (EN ISO 11114-2:2013) has been pre

12、pared by Technical Committee ISO/TC 58 “Gascylinders“ in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the secretariatof which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by end

13、orsement, at the latest by October 2013, and conflicting national standards shall be withdrawn atthe latest by October 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for ident

14、ifying any or all such patent rights. This document supersedes EN ISO 11114-2:2000. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, CzechRepub

15、lic, 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, Switzerland, Turkey and the United Kingdom. Endorse

16、ment notice The text of ISO 11114-2:2013 has been approved by CEN as EN ISO 11114-2:2013 without any modification. BS EN ISO 11114-2:2013ISO 11114-2:2013(E) ISO 2013 All rights reserved iiiContents Page Foreword iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Mat

17、erials . 2 4.1 General . 2 4.2 Types of material . 2 5 General considerations. 3 6 Specific considerations 4 6.1 General . 4 6.2 Non-compatibility risks . 4 6.2.1 Violent reaction (oxidation/burning) (F) 4 6.2.2 Weight loss (W) 5 6.2.3 Swelling of material (S) . 6 6.2.4 Change in mechanical properti

18、es (M) . 6 6.2.5 Other compatibility considerations . 6 7 Compatibility data . 7 7.1 Table of compatibility 7 7.2 Symbols and abbreviations 8 7.2.1 Symbols for compatibility 8 7.2.2 Abbreviations for materials 8 7.2.3 Abbreviations for non-compatibility risks 9 7.2.4 Examples 9 Bibliography 14 BS EN

19、 ISO 11114-2:2013ISO 11114-2:2013(E) iv ISO 2013 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 Standards is normally carried out through ISO technica

20、l 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, also take part in the work. ISO collaborates closely wit

21、h 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 committees is to prepare International Standards. Draft Inter

22、national 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 possibility that some of the elements of this document may

23、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11114-2 was prepared by Technical Committee ISO/TC 58, Gas cylinders, in collaboration with Technical Committee CEN/TC 23, Transportable Gas cylinders in accordance with the Agreeme

24、nt on technical cooperation between ISO and CEN (Vienna Agreement). This second edition cancels and replaces the first edition, Clauses 4 and 6, and Table 1 of which have been technically revised. Annex A has been deleted. ISO 11114 consists of the following parts, under the general title Gas cylind

25、ers Compatibility of cylinder and valve materials with gas contents: Part 1: Metallic materials; Part 2: Non-metallic materials; Part 3: Autogenous ignition test for non-metallic materials in oxygen atmosphere; Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement

26、. BS EN ISO 11114-2:2013ISO 11114-2:2013(E) ISO 2013 All rights reserved vIntroduction This part of ISO 11114 deals with the compatibility of non-metallic materials used for gas cylinders and gas cylinder valves with the gas contents of the cylinder. Compatibility of metallic materials is treated in

27、 ISO 11114-1. Non-metallic materials are very often used for the construction of gas cylinder valves as seals, e.g. o-ring, gland packing, seats, or as lubrication products to avoid friction. They are also commonly used to ensure sealing of the valve/cylinder connection. For gas cylinders, they are

28、sometimes used as an internal coating or as a liner for composite materials. Non-metallic materials not in contact with the gas are not covered by this part of ISO 11114. This part of ISO 11114 is based on current international experience and knowledge. Some data are derived from experience involvin

29、g a mixture of the gas concerned with a dilutant, where no data for single component gases were available. This part of ISO 11114 has been written to be in conformity with the UN Recommendations on the Transport of Dangerous Goods: Model Regulations. When published it will be submitted to the UN Sub

30、 Committee of Experts on the Transport of Dangerous Goods with a request that it be included in the Model Regulations. Where there is any conflict between this part of ISO 11114 and any applicable regulation, the regulation always takes precedence. BS EN ISO 11114-2:2013BS EN ISO 11114-2:2013INTERNA

31、TIONAL STANDARD ISO 11114-2:2013(E) ISO 2013 All rights reserved 1Gas cylinders Compatibility of cylinder and valve materials with gas contents Part 2: Non-metallic materials 1 Scope This part of ISO 11114 gives guidance in the selection and evaluation of compatibility between non-metallic materials

32、 for gas cylinders and valves and the gas contents. It also covers bundles, tubes and pressure drums. This part of ISO 11114 can be helpful for composite and laminated materials used for gas cylinders. It does not cover the subject completely and is intended to give guidance only in evaluating the c

33、ompatibility of gas/material combinations. Only the influence of the gas in changing the material and mechanical properties is considered (for example chemical reaction or change in physical state). The basic properties of the materials, such as mechanical properties, required for design purposes ar

34、e normally available from the materials supplier and are not considered in this part of ISO 11114. The compatibility data given are related to single component gases but can be used to some extent for gas mixtures. Ceramics, glasses, and adhesives are not covered by this part of ISO 11114. Other asp

35、ects such as quality of delivered gas are not considered. This part of ISO 11114 is not intended to be used for cryogenic fluids (see ISO 21010). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application

36、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 11114-3, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 3: Autogenous ignition test

37、for non-metallic materials in oxygen atmosphere ISO 10297, Gas cylinders Refillable gas cylinder valves Specification and type testing ISO 15001, Anaesthetic and respiratory equipment Compatibility with oxygen 3 Terms and definitions For the purposes of this document, the following terms and definit

38、ions apply. BS EN ISO 11114-2:2013ISO 11114-2:2013(E) 2 ISO 2013 All rights reserved3.1 competent person person who has the necessary technical knowledge, qualification, experience and authority to assess and approve materials for use with gases and to define any special conditions of use that are n

39、ecessary 3.2 acceptable material/gas combination that is satisfactory under normal conditions of use (as defined in Clause 5), provided that any indicated non-compatibility risks, as given in Table 1, are taken into account 3.3 not acceptable material/single gas combination that is not safe under no

40、rmal conditions of use (as defined in Clause 5) NOTE For gas mixtures special conditions can apply. 3.4 dynamic sealing where in normal operation the non-metallic material is used to provide a pressure seal between two surfaces that have relative motion to each other 3.5 static sealing where in norm

41、al operation the non-metallic material is used to provide a pressure seal between two surfaces that have not relative motion to each other 4 Materials 4.1 General Non-metallic materials shall be suitable for the intended service. They are suitable if their compatibility is stated as acceptable in Ta

42、ble 1, or the necessary properties have been proved by tests or long and safe experience to the satisfaction of a competent person. If coated materials are used the suitability of the combination shall be assessed and approved if all technical aspects have been considered and validated by a competen

43、t person. These technical aspects include but are not limited to compatibility of the coating material with the intended gas, durability of the coating during all its intended use and gas permeability through it. 4.2 Types of material The most commonly used non-metallic materials for gas cylinders a

44、nd cylinder valves can be grouped as follows: plastics; elastomers; fluid lubricants. NOTE Solid lubricants are sometimes used, e.g. MoS2. Materials considered in this part of ISO 11114 are as follows: a) Plastics: Polytetrafluoroethylene (PTFE); BS EN ISO 11114-2:2013ISO 11114-2:2013(E) ISO 2013 Al

45、l rights reserved 3 Polychlorotrifluoroethylene (PCTFE); Polyvinylidenefluoride (PVDF); Polyamide (PA); Polypropylene (PP); Polyetheretherketone (PEEK); Polypropylene sulphide (PPS); Polyvinyl chloride (PVC) Polyimide (PI); Polyoxymethylene (POM). b) Elastomers: Butyl rubber (IIR); Nitrile rubber (N

46、BR); Chloroprene rubber (CR); Fluorocarbon rubber (FKM); Methyl-vinyl-silicon e rubber (VMQ); Ethylene propylene diene monomer (EPDM); Polyacrylate rubber (ACM); Polyurethane rubber (PUR); Methyl-fluoro-silicone rubber (FVMQ). c) Fluid lubricants: Hydrocarbon (HC); Fluorocarbon (FC). 5 General consi

47、derations It is important to note that these materials are generic types. Within each material type there are variations in the properties of the materials due to polymer differences and formulations used by manufacturers to modify physical and chemical properties of the material. The user of the ma

48、terial should therefore consult the manufacturer and if necessary carry out tests before using the material (for example for critical services such as oxygen and other oxidizing gases). Lubricants are often used in valves to reduce friction and wear in the moving parts. For valves used for oxidizing

49、 gases or for gases supporting combustion, if lubrication is required, it shall be ensured that the lubricant is compatible for the intended application when the lubricated components are in contact with the oxidizing gas or the gas supporting combustion. BS EN ISO 11114-2:2013ISO 11114-2:2013(E) 4 ISO 2013 All rights reservedWhere the lubricant is listed as “not acceptable“ in Table 1 for reasons other than violent reaction (F), it may be used safely and usually satisfactori