EN ISO 17491-3-2008 en Protective clothing - Test methods for clothing providing protection against chemicals - Part 3 Determination of resistance to penetration by a jet of liquid.pdf

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1、BS EN ISO17491-3:2008ICS 13.340.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDProtective clothing Test methods forclothing providingprotection againstchemicalsPart 3: Determination of resistance topenetration by a jet of liquid (jet test)(ISO 17491-3:2008)Th

2、is British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 57016 2Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 17491-3:2008National forewordThis British Standard is the UK implementation of EN ISO

3、17491-3:2008. It supersedes BS EN 463:1995 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/3, Protective clothing from chemicals and radioactivecontamination.A list of organizations represented on this committee can be obtained onrequest to its sec

4、retary.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 confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 17491-3August 2008ICS

5、 13.340.10 Supersedes EN 463:1994 English VersionProtective clothing - Test methods for clothing providingprotection against chemicals - Part 3: Determination ofresistance to penetration by a jet of liquid (jet test) (ISO 17491-3:2008)Vtements de protection - Mthodes dessai pour lesvtements fourniss

6、ant une protection contre les produitschimiques - Partie 3: Dtermination de la rsistance lapntration par un jet de liquide (essai au jet) (ISO 17491-3:2008)Schutzkleidung - Prfverfahren frChemikalienschutzkleidung - Teil 3: Bestimmung derBestndigkeit gegen das Durchdringen einesFlssigkeitsstrahls (J

7、et-Test) (ISO 17491-3:2008)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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists

8、 and bibliographical references concerning such nationalstandards 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 translationunder the responsi

9、bility of a CEN member into its own language and notified to the CEN Management 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,

10、 Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart

11、, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 17491-3:2008: EBS EN ISO 17491-3:2008EN ISO 17491-3:2008 (E) 3 Foreword This document (EN ISO 17491-3:2008) has been prepared by Technical Committee CEN/TC

12、 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 national standard, e

13、ither 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 of patent rights. CEN

14、 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 the European Commission and the European Free Trade Association, and supports essential requirements of E

15、C 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 Standard: Austria, Belg

16、ium, 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. BS EN ISO 17491-3:

17、2008EN ISO 17491-3:2008 (E) 4 Annex ZA (informative) Relationship between this part of ISO 17491 and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment This part of ISO 17491 has been prepared under a mandate given to CEN by the European Commission and the European F

18、ree 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 Journal of the European Communities under that Directive and has been implemented as a national standard in at least one M

19、ember 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 of both standards, a presumption of conformity with the Essential Requirements of Directive 89/686/EEC Personal Protect

20、ive 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. BS EN ISO 17491-3:2008ISO 17491-3:2008(E) ISO 2008 All rights reserved iiiForeword ISO (the International Organization for Standar

21、dization) 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 has been established has the right to

22、 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 standardization. International Stan

23、dards 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 bodies for voting. Publication as an Int

24、ernational 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 or all such patent rights. ISO 17491

25、-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 equipment, Subcommittee SC 13, Prote

26、ctive 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 revised. ISO 17491 consists of the follo

27、wing 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 of liquid (spray test) The followin

28、g 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) BS EN ISO 17491-3:2008ISO 17491-3:2008(E) iv ISO 2008 All rights reservedIntroduct

29、ion This part of ISO 17491 describes a test method for determining the liquid penetration resistance of chemical protective clothing Type 3 (with liquid-tight connections between different parts of the clothing and, if applicable, between the clothing and other items of personal protective equipment

30、). 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 forceful projection of a liquid chemical. Interlaboratory testing has shown that this test method is a repeatable pass/fail method. Ot

31、her requirements with regard to this type of clothing and its constituent materials can be found in the corresponding product standard (see Bibliography 2). A document on the selection, use and maintenance of chemical protective clothing is available (see Bibliography 3). CAUTION Some of the procedu

32、res 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. BS EN ISO 17491-3:2008INTERNATIONAL STANDARD ISO 17491-3:2008(E) ISO 2008 All rights reserved 1Protective clothing Test methods for clothin

33、g providing protection against chemicals 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 app

34、licable to clothing with liquid-tight 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

35、 specified in other standards. 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) appl

36、ies. 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, gene

37、rated 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. 3.3 absorbent overall overall made from an absorbent material, worn under the test suit and i

38、ntended for collecting liquid penetration during spray and jet testing of chemical protective clothing BS EN ISO 17491-3:2008ISO 17491-3:2008(E) 2 ISO 2008 All rights reserved4 Principle of the test method A water jet, containing a fluorescent or visible dye tracer, is directed at chemical protectiv

39、e 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 identified. 5 Liquid for application in the form of a jet A test liquid containing

40、 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 acid (CAS

41、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 of (30 5) 103N/m. NOTE A typical concentrated solution can be made by dissolving

42、 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 measure the surface tension within the stated tolerance, any suitable method may be us

43、ed, 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 tension is stable throughout the test, i.e. the surface tension of the liquid leavi

44、ng 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 sha

45、ll 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. It shall be made from a water-absorbent material that is sufficiently homogeneo

46、us 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

47、) Sontara PES/Woodpulp 45/55 and Poligard Adsorbent garments are suitable for this purpose. This information is given for the convenience of users of this part of ISO 17491 and does not constitute an endorsement by ISO of the products named. Equivalent products may be used if they can be shown to le

48、ad to the same results. BS EN ISO 17491-3:2008ISO 17491-3:2008(E) ISO 2008 All rights reserved 36.2 Calibration stain A calibration stain shall be produced on every absorbent overall used under the test suit. This can be done before the jet test is performed or immediately afterwards. Select an area

49、 of the absorbent overall that is not likely to be contaminated. Put under it a piece of undergarment and ensure that both layers are in contact. Put the assembly under a dispenser. The lower tip of the dispenser shall be at a vertical distance of (5 0,5) cm from the assembly. Dispense a volume of (25 5) l of the test liquid to produce a clearly visible stain on the surface of the overall. Define the outline of the stain before it is measured. Several methods can be used to measure the calibrat