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1、BS EN ISO 17491-3:2008 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 3: Determination of resistance to penetration by a jet of liquid (jet test) (ISO 1749
2、1-3:2008) Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, 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 57016 2 Amendments/corrigenda
3、issued since publication DateComments BS EN ISO 17491-3:2008 National foreword This British Standard is the UK implementation of EN ISO 17491-3:2008. It supersedes BS EN 463:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PH/3/3, Protective cloth
4、ing 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. Compliance
5、with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17491-3 August 2008 ICS 13.340.10Supersedes EN 463:1994 Eng
6、lish Version Protective clothing - Test methods for clothing providing protection against chemicals - Part 3: Determination of resistance to penetration by a jet of liquid (jet test) (ISO 17491- 3:2008) Vtements de protection - Mthodes dessai pour les vtements fournissant une protection contre les p
7、roduits chimiques - Partie 3: Dtermination de la rsistance la pntration par un jet de liquide (essai au jet) (ISO 17491- 3:2008) Schutzkleidung - Prfverfahren fr Chemikalienschutzkleidung - Teil 3: Bestimmung der Bestndigkeit gegen das Durchdringen eines Flssigkeitsstrahls (Jet-Test) (ISO 17491-3:20
8、08) 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 lists and bibliographical
9、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 responsibility of a CEN me
10、mber 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, Iceland, Ireland, Italy
11、, 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: rue de Stassart, 36 B-105
12、0 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17491-3:2008: E Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 EN ISO 17491
13、-3:2008 (E) 3 Foreword This document (EN ISO 17491-3:2008) 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 “Personal safety - Prot
14、ective 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 February 2009. Attention is dr
15、awn 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 463:1994. This document has been prepared under a mandate given to CEN by
16、 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 Regulations, the national stand
17、ards 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, Netherlands, Norway, Poland, Po
18、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 EN ISO 17491-3:2008 (E) 4 Annex ZA (informative) Relationship between this p
19、art 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 to Essential Requiremen
20、ts 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 this standard, together wi
21、th 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 requirements and other EU
22、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 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 ISO 17491-3:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the Int
23、ernational 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 technical committee ha
24、s 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 matters of electrotechnical
25、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 circulated to the member bodie
26、s 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 responsible for identifying any o
27、r all such patent rights. ISO 17491-3 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 Protective clothing and e
28、quipment, Subcommittee SC 13, Protective clothing, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This first edition of ISO 17491-3, together with ISO 17491-4, cancels and replaces ISO 17491:2002, Clauses 6 and 7 of which have been technically revis
29、ed. 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 penetration by a spray
30、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 South Bank University, So
31、uth Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 ISO 17491-3:2008(E) iv ISO 2008 All rights reserved Introduction This part of ISO 17491 describes a test method for determining the liquid penetration resistance of chemical protective clothing Type 3 (with liqu
32、id-tight connections between different parts of the clothing and, if applicable, between the clothing and other items of personal protective equipment). 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 o
33、f exposure to a forceful projection of a liquid chemical. Interlaboratory testing has shown that this test method is a repeatable pass/fail method. Other requirements with regard to this type of clothing and its constituent materials can be found in the corresponding product standard (see Bibliograp
34、hy 2). A document on the selection, use and maintenance of chemical protective clothing is available (see Bibliography 3). 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
35、 be taken. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 INTERNATIONAL STANDARD ISO 17491-3:2008(E) ISO 2008 All rights reserved 1 Protective clothing Test methods for clothing providing protection against chem
36、icals Part 3: Determination of resistance to penetration by a jet of liquid (jet test) 1 Scope This part of ISO 17491 specifies a test method for determining the resistance of protective clothing against penetration by a jet of liquid. This part of ISO 17491 is applicable to clothing with liquid-tig
37、ht connections between different parts of the clothing and, if applicable, between the clothing and other items of personal protective equipment worn with it. This part of ISO 17491 does not address chemical permeation resistance of the clothing materials, which is specified in other standards. 2 No
38、rmative 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. ISO/TR 11610, Protective cloth
39、ing 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, generated by dropping a specified quant
40、ity 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. 3.3 absorbent overall overall made from an absorbent material, worn under the test suit and intended for collecting liquid penet
41、ration during spray and jet testing of chemical protective clothing Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:13, Uncontrolled Copy, (c) BSI BS EN ISO 17491-3:2008 ISO 17491-3:2008(E) 2 ISO 2008 All rights reserved 4 Principle of the test method A water jet, c
42、ontaining a fluorescent or visible dye tracer, is directed at 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 protective clothing, allows any points of inward leakage to be id
43、entified. 5 Liquid for application in the form of a jet 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 liquid (sodium lauryl ether sulphate, CAS n
44、umber 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 obtain a solution with a surface tension
45、of (30 5) 103 N/m. NOTE A typical concentrated solution 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 eventually 200 ml of it is diluted in 10 l of water. To measu
46、re 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 surface tension can be obtained. It shall be ensured that the surface te
47、nsion 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
48、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. 6 Apparatus and test subjects 6.1 Absorbent overall The absorbent overall shall be a one-piece garment with a hood
49、. It shall be made from a water-absorbent material that is sufficiently homogeneous to produce absorption spots which vary less than 10 % in surface from the mean value for a given volume of liquid, when sampled at any place on the garment.1) NOTE In order to protect the test subject from the test liquid, water-repellent undergarments should be worn under the absorbent overall. 1) Sontara PES/Woodpulp 45/55 and Poligard Adsorbent garments are suitable for this purpose. This information is given for