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

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1、December 2008DEUTSCHE NORM English price group 9No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.340.10!$Tq5“1497818

2、www.din.deDDIN EN ISO 17491-3Protective clothing Test methods for clothing providing protection against chemicals test) (ISO 17491-3:2008)English version of DIN EN ISO 17491-3:2008-12Schutzkleidung Prfverfahren fr Chemikalienschutzkleidung Teil 3: Bestimmung der Bestndigkeit gegen das Durchdringen e

3、ines Flssigkeitsstrahls(Jet-Test) (ISO 17491-3:2008)Englische Fassung DIN EN ISO 17491-3:2008-12SupersedesDIN EN 463:1994-09www.beuth.deDocument comprises 13 pagesPart 3: Determination of resistance to penetration by a jet of liquid (jetDIN EN ISO 17491-3:2008-12 2 Start of validity This standard ta

4、kes effect on 1 December 2008. National foreword This standard has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets” (Secretariat: DIN, Germany) in collaboration with Technical Committee ISO/TC 94 “Personal safety Protective cloth

5、ing and equipment”, Subcommittee SC 13 “Protective clothing”. The responsible German body involved in its preparation was the Normenausschuss Persnliche Schutz-ausrstung (Personal Protective Equipment Standards Committee), Technical Committee NA 075-05-03 AA The DIN-Fachbericht corresponding to the

6、ISO Technical Report referred to in clause 2 of this standard is as follows: ISO/TR 11610 Amendments This standard differs from DIN EN 463:1994-09 as follows: a) The standard has been revised in form and substance. b) New terms and definitions have been included. c) The test method has been modified

7、. Previous editions DIN EN 463: 1994-09 National Annex NA (informative) Bibliography DIN-Fachbericht (DIN Technical Report) CEN ISO/TR 11610, Protective clothing Vocabulary DIN-Fachbericht CEN ISO/TR 11610 Kontamination.Schutzkleidung gegen Chemikalien und radioaktiveEUROPEAN STANDARD NORME EUROPENN

8、E EUROPISCHE NORM EN ISO 17491-3 August 2008 ICS 13.340.10 Supersedes EN 463:1994 English 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 p

9、rotection - Mthodes dessai pour les vtements fournissant une protection contre les produits 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 Best

10、ndigkeit gegen das Durchdringen eines Flssigkeitsstrahls (Jet-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 European Standard the status o

11、f 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A ver

12、sion in any other language made by translation under the responsibility 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, D

13、enmark, Estonia, Finland, France,Germany, Greece, Hungary, 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 NORMALI

14、SATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17491-3:2008: E2 DIN EN ISO 17491-3:2008-12 EN ISO 17491-3:2008 (E) Contents Page

15、 Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .5 4 Principle of the test method .6 5 Liquid for application in the form of a jet6 6 Apparatus and test subjects 6 6.1 Absorbent overall6 6.2 Calibration stain 7 6.3 Jet nozzle .7 6.4 Hydraulic pump .7 6.5 Test liq

16、uid container .7 6.6 Stopwatch 8 6.7 Test subject8 7 Preparation for the jet test8 8 Test procedure.8 8.1 Selection of test spots 8 8.2 Jet test 8 9 Test report9 Annex ZA (informative) Relationship between this part of ISO 17491 and the Essential Requirements of EU Directive 89/686/EEC Personal Prot

17、ective Equipment.10 Bibliography11 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

18、“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

19、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 463:1994. This document has been prepared under a

20、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

21、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

22、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN ISO 17491-3:2008-12 EN ISO 17491-3:2008 (E) Introduction This part of ISO 17491 describes a test method for determining the liquid penetration resistance of chemical protective cloth

23、ing 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). Such clothing comprises one or more items covering the full surface of the body and is intended to be worn under conditions wh

24、ere 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. Other requirements with regard to this type of clothing and its constituent materials can be found in the corresponding product sta

25、ndard (see Bibliography 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 appropria

26、te precautions should be taken. 4 DIN EN ISO 17491-3:2008-12 EN ISO 17491-3:2008 (E) 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-tight

27、 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 Norm

28、ative 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 clothin

29、g 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 quantit

30、y 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 penetra

31、tion during spray and jet testing of chemical protective clothing 5 DIN EN ISO 17491-3:2008-12 EN ISO 17491-3:2008 (E) 4 Principle of the test method A water jet, containing a fluorescent or visible dye tracer, is directed at chemical protective clothing worn by a human test subject. Inspection of t

32、he 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 the following substances shall be used: water at (20 2)

33、 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 number 77-92-9, analytical grade). Prepare the test liqu

34、id 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 4 g methyl blue, 25 ml Genapol LRO liquid and 125 g cit

35、ric 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 used, e.g. a Wright torsion balance using a standard 12 mm

36、 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 the liquid in th

37、e 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 con

38、tamination 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 homogeneous to produce absorption spots which vary less than 10 %

39、 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 garm

40、ents 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 lead to the same results. 6 DIN EN ISO 17491-3:2008-12 EN

41、ISO 17491-3:2008 (E) 6.2 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 of the absorbent overall that is not likely to be contaminated. Put under

42、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 surfac

43、e of the overall. Define the outline of the stain before it is measured. Several methods can be used to measure the calibration stain, such as a planimeter. The minimum area of the stain shall be 1 cm2. The calibrated stain shall be used as a reference for the pass/fail evaluation of the tested suit

44、. Pass/fail criteria shall be defined in the corresponding product standard (see Bibliography 2). 6.3 Jet nozzle A nozzle, as shown in Figure 1, shall be used to generate the jet of test liquid. A pressure gauge capable of providing an accurate reading at a liquid pressure of (150 15) kPa shall be a

45、ttached to the nozzle. In order to avoid fluctuations in the distance between nozzle and target, the nozzle shall be fixed on a spray boom for example. Key dndiameter of the opening of the nozzle, (4 0,1) mm lnlength of the opening of the nozzle, (4 0,1) mm d1inner diameter of the tube, (12,5 1) mm

46、lnmdistance between the opening of the nozzle and the manometer, (80 1) mm Figure 1 Shape of nozzle 6.4 Hydraulic pump A self-priming, recirculating-type pump shall be used. The pump shall be equipped with a pressure gauge and adjustment, a variable output control filter and hoses to convey the test

47、 liquid from the test liquid container to the nozzle. The pump shall be capable of supplying a minimum pressure of 400 kPa. Provisions shall be taken to avoid the test starting before the pressure is completely built up. 6.5 Test liquid container The test liquid shall be prepared and stored in a con

48、tainer. 7 DIN EN ISO 17491-3:2008-12 EN ISO 17491-3:2008 (E) 6.6 Stopwatch A stopwatch accurate to 1 s shall be used. 6.7 Test subject Some of the procedures specified in this part of ISO 17491 involve the use of processes which could lead to a hazardous situation for a human test subject. Attention

49、 is drawn to the hazards for the test subjects eyes, ears, nose, mouth, abdomen and genitals deriving from the application of a pressurized jet of liquid. NOTE 1 This part of ISO 17491 does not claim to indicate all hazards which might occur during its application. For the protection of the test subject, national laws and requirements apply. Tests shall only be carried out by test subjects whose body dimensions are within the range indicated on the size label of the suit to be tested. NOTE 2 Garment size