BS EN ISO 17491-4-2008 Protective clothing - Test methods for clothing providing nprotection against chemicals - Part 4 Determination of nresistance to penetration by a spray of li.pdf

1、BS EN ISO17491-4:2008ICS 13.340.10,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDProtective clothing Test methods forclothing providingprotection againstchemicalsPart 4: Determination of resistance topenetration by a spray of liquid (spraytest) (ISO 17491-4:20

2、08)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 57017 9Amendments/corrigenda issued since publicationDate

3、 CommentsBS EN ISO 17491-4:2008National forewordThis British Standard is the UK implementation of EN ISO17491-4:2008. It supersedes BS EN 468:1995 and which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/3, Protective clothing from chemicals and radioac

4、tivecontamination.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confe

5、r immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 17491-4August 2008ICS 13.340.10 Supersedes EN 468:1994 English VersionProtective clothing - Test methods for cloth

6、ing providingprotection against chemicals - Part 4: Determination ofresistance to penetration by a spray of liquid (spray test) (ISO17491-4:2008)Vtements de protection - Mthodes dessai pour lesvtements fournissant une protection contre les produitschimiques - Partie 4: Dtermination de la rsistance l

7、apntration par vaporisation de liquide (essai au brouillard)(ISO 17491-4:2008)Schutzkleidung - Prfverfahren frChemikalienschutzkleidung - Teil 4: Bestimmung derBestndigkeit gengen das Durchdringen vonFlssigkeitsspray (Spray-Test) (ISO 17491-4:2008)This European Standard was approved by CEN on 14 Aug

8、ust 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtain

9、ed on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management

10、 Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol

11、and, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any

12、 means reservedworldwide for CEN national Members.Ref. No. EN ISO 17491-4:2008: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIBS EN ISO 17491-4:2008EN ISO 17491-4:2008 (E) 3 Foreword This document (EN ISO 17491-4:2008) has been prepared by Techni

13、cal Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets“, the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 94 “Personal safety - Protective clothing and equipment“. This European Standard shall be given the status of a

14、national standard, either by publication of an identical text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn at the latest by February 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject o

15、f patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 468:1994. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essenti

16、al requirements of EC Directive(s). For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta

17、ndard: Austria, Belgium, Bulgaria, 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 United Kingdom

18、. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIBS EN ISO 17491-4:2008EN ISO 17491-4:2008 (E) 4 Annex ZA (informative) Relationship between this part of ISO 17491 and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipm

19、ent This part of ISO 17491 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide one means of conforming to Essential Requirements of the New Approach Directive 89/686/EEC. Once this part of ISO 17491 is cited in the Official Jou

20、rnal of the European Communities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard, together with the relevant requirements given in the product standards, confers, within the limits of the scope

21、of both standards, a presumption of conformity with the Essential Requirements of Directive 89/686/EEC Personal Protective Equipment, Annex II, Clause 3.10.2. WARNING Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard. Licensed Co

22、py: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIBS EN ISO 17491-4:2008ISO 17491-4:2008(E) ISO 2008 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodie

23、s). 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, governmental and n

24、on-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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Pa

25、rt 2. The main task of technical committees 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 castin

26、g a vote. 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. ISO 17491-4 was prepared by the European Committee for Standardization (CEN) Technical Comm

27、ittee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets, in collaboration with Technical Committee ISO/TC 94, Personal safety Protective clothing and equipment, Subcommittee SC 13, Protective clothing, in accordance with the Agreement on technical cooperation between

28、ISO and CEN (Vienna Agreement). This first edition of ISO 17491-4, together with ISO 17491-3, cancels and replaces ISO 17491:2002, Clauses 6 and 7 of which have been technically revised. ISO 17491 consists of the following parts, under the general title Protective clothing Test methods for clothing

29、providing protection against chemicals: Part 3: Determination of resistance to penetration by a jet of liquid (jet test) Part 4: Determination of resistance to penetration by a spray of liquid (spray test) The following parts are under development: Part 1: Determination of resistance to outward leak

30、age of gases (internal pressure test) Part 2: Determination of resistance to inward leakage of aerosols and gases (inward leakage test) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIBS EN ISO 17491-4:2008ISO 17491-4:2008(E) iv ISO 2008 All rights

31、reservedIntroduction This part of ISO 17491 describes a test method for determining the spray penetration resistance of chemical protective clothing Type 4 (with spray-tight connections between different parts of the clothing and, if applicable, between the clothing and other items of personal prote

32、ctive equipment) and Type 6 (limited performance protective clothing). Such clothing comprises one or more items covering the full surface of the body and is intended to be worn under conditions where there is a risk of exposure to a spray of a liquid chemical. Other requirements with regard to this

33、 type of clothing and its constituent materials can be found in the respective product standards (see Bibliography 4). Interlaboratory testing has shown that this test method is a repeatable pass/fail method. A document on the selection, use and maintenance of chemical protective clothing is availab

34、le (see Bibliography 5). CAUTION Some of the procedures specified in this part of ISO 17491 involve the use of processes which could lead to hazardous situations and hence appropriate precautions should be taken. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled C

35、opy, (c) BSIBS EN ISO 17491-4:2008INTERNATIONAL STANDARD ISO 17491-4:2008(E) ISO 2008 All rights reserved 1Protective clothing Test methods for clothing providing protection against chemicals Part 4: Determination of resistance to penetration by a spray of liquid (spray test) 1 Scope This part of IS

36、O 17491 specifies methods for determining the resistance of chemical protective clothing to penetration by sprays of liquid chemicals at two different levels of intensity: a) Method A: low-level spray test. This is applicable to clothing that covers the full body surface and is intended to be worn w

37、hen there is a potential risk of exposure to small quantities of spray or accidental low-volume splashes of a liquid chemical. b) Method B: high-level spray test. This is applicable to clothing with spray-tight connections between different parts of the clothing and, if applicable, between the cloth

38、ing and other items of personal protective equipment, which covers the full body surface and which is intended to be worn when there is a risk of exposure to sprayed particles of liquid. This part of ISO 17491 does not address chemical permeation resistance of the materials from which the chemical p

39、rotective clothing is made. 2 Normative references The following referenced documents are indispensable for the application 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

40、. ISO/TR 11610, Protective clothing Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/TR 11610 and the following apply. 3.1 connection assemblage or join 3.2 calibrated stain fluorescent or visible stain, with a defined minimum area, generat

41、ed by dropping a specified quantity of test liquid on to an absorbent overall NOTE The calibrated stain is used to measure liquid penetration during spray and jet testing of chemical protective clothing. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c)

42、BSIBS EN ISO 17491-4:2008ISO 17491-4:2008(E) 2 ISO 2008 All rights reserved3.3 absorbent overall overall made from an absorbent material, worn under the test suit and intended for collecting liquid penetration during spray and jet testing of chemical protective clothing 4 Principle of test method An

43、 aqueous spray, containing a fluorescent or visible dye tracer, is directed under controlled conditions at the chemical protective clothing worn by a human test subject. Inspection of the inside surface of the clothing and the outside surface of the absorbent overall worn under the test garment allo

44、ws any points of inward leakage to be identified. 5 Liquid for application in the form of a spray A test liquid containing the following substances shall be used: water at (20 2) C; a water-soluble fluorescent or visible dye, e.g. methyl blue (CAS number 28983-56-4); a surfactant, e.g. Genapol LRO l

45、iquid (sodium lauryl ether sulphate, CAS number 009004-82-4); a stabilizer for the dye (if needed), e.g. citric acid (CAS number 77-92-9, analytical grade). Prepare the test liquid by dissolving the dye in water. Add the surfactant and the dye stabilizer (if needed) in the appropriate proportions to

46、 obtain a solution with following characteristics: a) for method A: a surface tension of (52 7,5) 103N/m; b) for method B: a surface tension of (30 5) 103N/m. NOTE A typical concentrated solution for a high-level spray test can be made by dissolving 4 g methyl blue, 25 ml Genapol LRO liquid and 125

47、g citric acid in 1 l of tap water. The mixture is stirred for 15 min to 20 min with a magnetic stirrer and eventually 200 ml of the mixture is diluted in 10 l of water. To measure the surface tension within the stated tolerance, any suitable method may be used, e.g. a Wright torsion balance using a

48、standard 12 mm diameter platinum ring. Agents other than surfactants may be mixed with water if the same surface tension can be obtained. It shall be ensured that the surface tension is stable throughout the test, i.e. the surface tension of the liquid leaving the nozzle as well as the tension of th

49、e liquid in the tank shall meet the requirements. This shall be verified before and after each test. Avoid dyes that adhere too strongly to the fibres of the absorbent material resulting in a wet spot larger than the coloured spot. The necessary measures shall be taken to protect the test subject and to avoid contamination of the surface water drainage system. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/02/2009 02:27, Uncontrolled Copy, (c) BSIBS EN ISO 17491-4:2008ISO 17491-4:2008(E)