EN ISO 8331-2016 en Rubber and plastics hoses and hose assemblies - Guidelines for selection storage use and maintenance《橡胶和塑料软管和软管组件选择 贮存 使用和维修(ISO 8331 2016)》.pdf

1、BS EN ISO 8331:2016Rubber and plastics hoses and hose assemblies Guidelines for selection, storage, use and maintenance (ISO 8331:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 8331:2016 BRITISH STANDARDNational forewordThis British Standard is the UK

2、 implementation of EN ISO 8331:2016.It supersedes BS EN ISO 8331:2014 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be obtained on

3、 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 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89092 5 ICS 23.040.70 Compliance with a B

4、ritish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPIS

5、CHE NORM EN ISO 8331 November 2016 ICS 23.040.70 Supersedes EN ISO 8331:2014English Version Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance (ISO 8331:2016) Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la slection,

6、le stockage, lutilisation et la maintenance (ISO 8331:2016) Gummi- und Kunststoffschluche und -schlauchleitungen - Richtlinien fr die Auswahl, Lagerung, Verwendung und Wartung (ISO 8331:2016)This European Standard was approved by CEN on 19 October 2016. CEN members are bound to comply with the CEN/C

7、ENELEC 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 national standards may be obtained on application to the CEN-CENELEC Management Centr

8、e 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 language and notified to the CEN-CENELEC Management Centre has the same status as the

9、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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla

10、nds, Norway, Poland, Portugal, Romania, 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 2016 CEN All rights

11、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8331:2016 EBS EN ISO 8331:2016EN ISO 8331:2016 (E) 3 European foreword This document (EN ISO 8331:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ in collabo

12、ration 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, either by publication of an identical text or by endorsement, at the latest by May 2017, and co

13、nflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This docume

14、nt supersedes EN ISO 8331:2014. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Re

15、public 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. Endorsement notice The text of ISO 8331:2016 has been a

16、pproved by CEN as EN ISO 8331:2016 without any modification. BS EN ISO 8331:2016ISO 8331:2016(E)Foreword v1 Scope . 12 Normative references 13 Terms and definitions . 14 General recommendations 14.1 Selection criteria 14.2 Storage conditions . 24.2.1 General 24.2.2 Storage period 24.2.3 Temperature

17、34.2.4 Humidity . 34.2.5 Light 34.2.6 Ozone . 34.2.7 Environment 34.2.8 Sources of heat . 34.2.9 Electric and magnetic fields . 34.2.10 Method of storing 34.2.11 Rodents 34.2.12 Issue from storage 44.2.13 Return to storage . 44.3 Use and maintenance 44.3.1 Handling 44.3.2 Pressure . 44.3.3 Temperatu

18、re 44.3.4 Products conveyed . 44.3.5 Environment 44.3.6 Bending radii . 44.3.7 Torsional stress . 44.3.8 Tensile stress . 54.3.9 Vibration . 54.3.10 Assembly of end fittings 54.3.11 Leakage 54.3.12 Electrical properties . 54.3.13 Fixed installations . 54.3.14 Moving parts 54.3.15 Marking/identificat

19、ion . 54.3.16 Maintenance 64.3.17 Repairing of hoses 65 Additional recommendations for specific applications. 65.1 General . 65.2 Welding and gas-cutting hoses 65.3 Steam hoses . 65.4 Hoses for the conveyance of foodstuffs and drinking water 75.5 Hoses for the conveyance of abrasive products 75.6 Ho

20、ses for the conveyance of corrosive or aggressive products 75.7 Hoses for the conveyance of flammable products 75.8 Automotive hoses . 85.9 Fire-fighting hoses . 85.9.1 General 85.9.2 Special points to be observed . 95.10 Oil-industry hoses and hose assemblies 105.10.1 General. 105.10.2 Special poin

21、ts to be observed 10 ISO 2016 All rights reserved iiiContents PageBS EN ISO 8331:2016ISO 8331:2016(E)Bibliography .13iv ISO 2016 All rights reservedBS EN ISO 8331:2016ISO 8331:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodi

22、es (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. International organizations

23、, 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 intended for its further m

24、aintenance 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.iso.org/directives).A

25、ttention 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 will be in the Introduc

26、tion 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 expressions related to confo

27、rmity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommit

28、tee SC 1, Rubber and plastics hoses and hose assemblies.This fourth edition cancels and replaces the third edition (ISO 8331:2014), which has been technically revised with the following change: 4.9 has been deleted. ISO 2016 All rights reserved vBS EN ISO 8331:2016BS EN ISO 8331:2016Rubber and plast

29、ics hoses and hose assemblies Guidelines for selection, storage, use and maintenance1 ScopeThis document sets out recommendations designed to maintain rubber and plastics hoses and hose assemblies, prior to use, in a condition as close as possible to the condition they were in when they were receive

30、d and to obtain the expected service life.NOTE It is intended that this document be used in conjunction with any applicable national statutory regulations.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirement

31、s of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testingISO 2230, Rubber products Guidelines for stora

32、geISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance and conductivity3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 8330 apply.ISO and IEC maintain terminological databases for use in standardization at the

33、 following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 General recommendations4.1 Selection criteriaIt is in the best interests of the user to select hoses or hose assemblies complying with national or intern

34、ational standards whenever such standards exist for the intended application. For applications outside the scope of such standards, needing special requirements or for which the necessary information is not available, the hose manufacturer or trade association should be consulted.The following point

35、s should be taken into consideration when selecting a hose or hose assembly for a specific application:a) Operational environment: ambient temperature; atmospheric conditions; contact with chemically aggressive liquids;INTERNATIONAL STANDARD ISO 8331:2016(E) ISO 2016 All rights reserved 1BS EN ISO 8

36、331:2016ISO 8331:2016(E) contact with other deleterious media.b) Media conveyed: liquid; gaseous; solids; combinations of the above.c) Method of conveyance: pressure (including rate of flow); suction (including rate of flow); gravity (including rate of flow); assisted (mixture of solid/fluid, solid/

37、air).d) Operating conditions: pressure and temperature of product conveyed; frequency of use.e) Installation: degree of curvature (minimum bend radius); vibration of system; risk of damage by impact and abrasion; use of correct type of connection; type of movement and frequency.4.2 Storage condition

38、s4.2.1 GeneralDuring storage, especially for long periods, and when hoses and hose assemblies are exposed to certain adverse influences, the physical properties of hoses and hose assemblies can undergo changes that may result in them no longer having the optimum characteristics corresponding to thei

39、r application when they are put into service. The storage conditions should be such as will offer maximum protection and minimize deterioration of the articles during storage.4.2.2 Storage periodThe storage period should be kept to a minimum. Rotation of stock is therefore essential and the “first-i

40、n first-out” rule applied. For long-term storage, the following maximum storage periods are recommended: for bulk hoses (without fittings attached), maximum of 4 years; for hose assemblies, maximum of 2 years.These two periods can be interpreted as consecutive for a maximum storage duration of 6 yea

41、rs (4 years as bulk hose + 2 years as hose assembly).2 ISO 2016 All rights reservedBS EN ISO 8331:2016ISO 8331:2016(E)4.2.3 TemperatureThe storage temperature should be below 25 C and articles stored away from direct heat sources. Storage above 25 C may shorten the life of the hose or hose assembly.

42、 Articles should not be subjected to temperatures over 50 C or below 30 C or to abnormal fluctuations in temperature during the storage period. See ISO 2230 for information on the effect of higher and lower temperatures on the storage time.4.2.4 HumidityThe relative humidity should not exceed 70 % o

43、r 65 % for polyurethane hose products.4.2.5 LightThe articles should be stored in a dark place away from sunlight and strong artificial light. If the storage area has windows or glazed openings, they should be obscured with red, orange or white coverings.4.2.6 OzoneDue to the harmful effect of ozone

44、 on rubber-based articles, storage areas should not contain equipment capable of generating ozone, for example mercury vapour lamps or tubes, high-voltage electrical equipment, electric motors or other equipment likely to cause sparks or electrical discharges.4.2.7 EnvironmentArticles should not be

45、placed in contact with certain products or exposed to their vapours, particularly solvents, oils, greases, acids, disinfectants, etc. Some metals, such as copper, iron and manganese, have a harmful effect on certain rubber compounds.4.2.8 Sources of heatArticles should not be stored in close proximi

46、ty to heat sources. The distance between the articles and the heat sources should be sufficient to ensure compliance with the recommendations of 4.2.3.4.2.9 Electric and magnetic fieldsStorage areas should not be in the vicinity of equipment that may generate electric or magnetic fields, as variatio

47、ns/fluctuations in such fields could induce currents in metallic joints, which in turn generate heat.4.2.10 Method of storingArticles should be stored in such a way that they are not subjected to excessive stress, elongation or deformation. Contact with sharp, pointed or abrasive objects or surfaces

48、 should be avoided, and storage racks should be provided whenever possible.Coiled hose or hose assemblies should be stored flat and preferably not stacked. When stacking is unavoidable, the height of the stack should be restricted so that the articles at the bottom do not suffer permanent deformatio

49、n. The hanging of coils on pegs is not recommended. Hoses and hose assemblies supplied in straight lengths should be stored flat and unbent. End caps should be kept on hoses supplied with them.4.2.11 RodentsArticles should be secure from attack by rodents and adequate protection should be provided if there are any risks. ISO 2016 All rights reserved 3BS EN ISO 8331:2016ISO 8331:2016(E)4.2.12 Issue from storageCare should be taken to ensure that articles issued from stock are in their correct condition and correspond