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1、BS EN ISO 17491-4:2008 ICS 13.340.10, NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Protective clothing Test methods for clothing providing protection against chemicals Part 4: Determination of resistance to penetration by a spray of liquid (spray test) (ISO
2、 17491-4:2008) Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2008 BSI 2008 ISBN 978 0 580 57017 9 Amendments/corrig
3、enda issued since publication DateComments BS EN ISO 17491-4:2008 National foreword This British Standard is the UK implementation of EN ISO 17491-4:2008. It supersedes BS EN 468:1995 and which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PH/3/3, Protect
4、ive clothing from chemicals and radioactive contamination. A list of organizations represented 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. Co
5、mpliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17491-4 August 2008 ICS 13.340.10Supersedes EN 468
6、:1994 English Version Protective clothing - Test methods for clothing providing protection against chemicals - Part 4: Determination of resistance to penetration by a spray of liquid (spray test) (ISO 17491-4:2008) Vtements de protection - Mthodes dessai pour les vtements fournissant une protection
7、contre les produits chimiques - Partie 4: Dtermination de la rsistance la pntration par vaporisation de liquide (essai au brouillard) (ISO 17491-4:2008) Schutzkleidung - Prfverfahren fr Chemikalienschutzkleidung - Teil 4: Bestimmung der Bestndigkeit gengen das Durchdringen von Flssigkeitsspray (Spra
8、y-Test) (ISO 17491-4:2008) This European Standard was approved by CEN on 14 August 2008. 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 lis
9、ts and bibliographical references concerning such national standards may be obtained 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 translation under the res
10、ponsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
11、Iceland, Ireland, 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: ru
12、e de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17491-4:2008: E Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17
13、491-4:2008 EN ISO 17491-4:2008 (E) 3 Foreword This document (EN ISO 17491-4:2008) has been prepared by Technical 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
14、“Personal safety - Protective clothing and equipment“. 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 February 2009, and conflicting national standards shall be withdrawn at the latest by Februar
15、y 2009. 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 document supersedes EN 468:1994. This document has been prepared under a
16、mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential 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 Regulati
17、ons, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
18、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17491-4:2008 EN ISO 17491-4:2008 (E) 4 Annex ZA (informative) Rela
19、tionship between this part of ISO 17491 and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment 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
20、to Essential Requirements of the New Approach Directive 89/686/EEC. Once this part of ISO 17491 is cited in the Official Journal 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 thi
21、s standard, together with the relevant requirements given in the product standards, confers, within the limits of the scope 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 req
22、uirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17491-4:2008 ISO 17491-4:2008(E) ISO 2008 All rights reserved ii
23、i Foreword 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 technical committees. Each member body interested in a subject for which a
24、 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 with the International Electrotechnical Commission (IEC) on all matte
25、rs 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 International Standards adopted by the technical committees are circula
26、ted 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 be the subject of patent rights. ISO shall not be held responsibl
27、e for identifying any or all such patent rights. ISO 17491-4 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets, in collaboration with Technical Committee ISO/TC 94, Personal safety Pr
28、otective clothing and equipment, Subcommittee SC 13, Protective clothing, in accordance with the Agreement on technical cooperation between 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
29、 been technically revised. ISO 17491 consists of the following parts, under the general title Protective clothing Test methods for clothing providing protection against chemicals: Part 3: Determination of resistance to penetration by a jet of liquid (jet test) Part 4: Determination of resistance to
30、penetration by a spray of liquid (spray test) The following parts are under development: Part 1: Determination of resistance to outward leakage of gases (internal pressure test) Part 2: Determination of resistance to inward leakage of aerosols and gases (inward leakage test) Licensed Copy: London So
31、uth Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17491-4:2008 ISO 17491-4:2008(E) iv ISO 2008 All rights reserved Introduction This part of ISO 17491 describes a test method for determining the spray penetration resistance of chemical protective clot
32、hing Type 4 (with spray-tight connections between different parts of the clothing and, if applicable, between the clothing and other items of personal protective equipment) and Type 6 (limited performance protective clothing). Such clothing comprises one or more items covering the full surface of th
33、e 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 type of clothing and its constituent materials can be found in the respective product standards (see Bibliography 4). Interlaboratory testing h
34、as shown that this test method is a repeatable pass/fail method. A document on the selection, use and maintenance of chemical protective clothing is available (see Bibliography 5). CAUTION Some of the procedures specified in this part of ISO 17491 involve the use of processes which could lead to haz
35、ardous situations and hence appropriate precautions should be taken. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17491-4:2008 INTERNATIONAL STANDARD ISO 17491-4:2008(E) ISO 2008 All rights reserved 1 Protective clothing T
36、est 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 ISO 17491 specifies methods for determining the resistance of chemical protective clothing to penetration by sprays of liquid chem
37、icals 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 when there is a potential risk of exposure to small quantities of spray or accidental low-volume splashes of a liquid chemical. b
38、) 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 clothing and other items of personal protective equipment, which covers the full body surface and which is intended to be worn when t
39、here 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 protective clothing is made. 2 Normative references The following referenced documents are indispensable for the application of t
40、his document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/TR 11610, Protective clothing Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definiti
41、ons 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, generated by dropping a specified quantity of test liquid on to an absorbent overall NOTE The calibrated stain is used to measure liqui
42、d penetration during spray and jet testing of chemical protective clothing. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:14, Uncontrolled Copy, (c) BSI BS EN ISO 17491-4:2008 ISO 17491-4:2008(E) 2 ISO 2008 All rights reserved 3.3 absorbent overall overall made fr
43、om 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 aqueous spray, containing a fluorescent or visible dye tracer, is directed under controlled conditions at the c
44、hemical 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 allows any points of inward leakage to be identified. 5 Liquid for application in the form of a spray A test liquid
45、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 liquid (sodium lauryl ether sulphate, CAS number 009004-82-4); a stabilizer for the dye (if needed), e.g. citric
46、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 obtain a solution with following characteristics: a) for method A: a surface tension of (52 7,5) 103 N/m; b) fo
47、r method B: a surface tension of (30 5) 103 N/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 g citric acid in 1 l of tap water. The mixture is stirred for 15 min to 20 min with a magnetic stirrer and eve
48、ntually 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 standard 12 mm diameter platinum ring. Agents other than surfactants may be mixed with water if the same surfa
49、ce 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 the 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 avo
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