BS ISO 17491-5-2013 Protective clothing Test methods for clothing providing protection against chemicals Determination of resistance to penetration by a spray of liquid (manikin sp.pdf

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1、BSI Standards PublicationBS ISO 17491-5:2013Protective clothing Testmethods for clothing providingprotection against chemicalsPart 5: Determination of resistance topenetration by a spray of liquid (manikinspray test)BS ISO 17491-5:2013 BRITISH STANDARDNational forewordThis British Standard is the UK

2、 implementation of ISO 17491-5:2013.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/3, Chemical, Biological, Radioactive and NuclearPersonal Protective Equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This pub

3、lication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 69626 8ICS 13.340.10Compliance with a British Standard cannot confer immunity

4、 fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2013.Amendments issued since publicationDate Text affectedBS ISO 17491-5:2013 ISO 2013Protective clothing - Test methods for clothing providing protection again

5、st chemicals Part 5: Determination of resistance to penetration by a spray of liquid (manikin spray test)Vtements de protection - Mthodes dessai pour les vtements fournissant une protection contre les produits chimiques Partie 5: Dtermination de la rsistance la pntration par vaporisation de liquide

6、(essai au brouillard laide dun mannequin)INTERNATIONAL STANDARDISO17491-5First edition2013-11-15Reference numberISO 17491-5:2013(E)BS ISO 17491-5:2013ISO 17491-5:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of thi

7、s publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in th

8、e country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 17491-5:2013ISO 17491-5:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scop

9、e . 12 Normative references 13 Terms and definitions . 14 Principle 15 Test agent and test subject . 26 Apparatus . 27 Specimen preparation 48 Procedure. 59 Test report . 6Bibliography 7BS ISO 17491-5:2013ISO 17491-5:2013(E)ForewordISO (the International Organization for Standardization) is a worldw

10、ide 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 be represented on th

11、at 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.The procedures used to develop this docu

12、ment and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directiv

13、es, Part 2 (see www.iso.org/directives). 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. Details of any patent rights identified during the developme

14、nt of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO spec

15、ific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 94, Personal safety

16、 Protective clothing and equipment, Subcommittee SC 13, Protective clothing.ISO 17491 (all parts) cancels and replaces ISO 17491:2002, which has been technically revised.ISO 17491 consists of the following parts, under the general title Protective clothing Test methods for clothing providing protect

17、ion against chemicals: 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) Part 3: Determination of resistance to penetration by a jet of liquid (jet test) Part 4: D

18、etermination of resistance to penetration by a spray of liquid (spray test) Part 5: Determination of resistance to penetration by a spray of liquid (manikin spray test)iv ISO 2013 All rights reservedBS ISO 17491-5:2013ISO 17491-5:2013(E)IntroductionChemical protective clothing is worn in conjunction

19、 with appropriate respiratory protective devices when required in order to isolate the body of the wearer from the environment. Several tests exist for determining the resistance of chemical protective clothing materials to either the permeation or penetration of gaseous or liquid chemicals.However,

20、 the effectiveness of the overall protective clothing item in preventing exposure from chemical hazards depends on the integrity of the clothing items design in eliminating or reducing inward leakage of chemicals.The selection of the appropriate integrity test method will depend on the application o

21、f the chemical protective clothing and the exposure hazards present. Usually, the integrity test method will be specified in the overall chemical protective clothing specification.Evaluations of protective clothing material chemical resistance are carried out by the appropriate test.ISO 6529 specifi

22、es methods for measuring the resistance of the protective clothing materials, seams, and assemblages to permeation by either liquids or gases. ISO 13994 specifies a method for determining the penetration resistance of protective clothing materials under conditions of continuous liquid contact and pr

23、essure, and can be applied to microporous materials, seams, and assemblages. ISO 6530 specifies a procedure for measuring the penetration resistance of protective clothing materials from the impact and runoff of liquids. General protective clothing requirements are specified in ISO 13688.This Intern

24、ational Standard specifies different test methods for determining the resistance of complete protective clothing to inward leakage of either gaseous or liquid chemicals (protective clothing integrity). These test methods apply to either liquid or gaseous chemicals, or aerosols, and range in the leve

25、l of severity.The integrity test methods specified by this International Standard are as follows: Part 1 specifies a method to be performed either at minimum test settings (method 1) or at more rigorous test settings (method 2), for assessing the resistance of a gas-tight suit to outward leakage of

26、air through, for example, essential openings, fastenings, seams, interface areas between items, pores, and any imperfections in the materials of construction. Part 2 specifies two different methods for determining the inward leakage of chemical protective clothing in an aerosol environment (method 1

27、) or gaseous environment (method 2). The procedure is applicable to gas-tight suits and non-gas-tight suits according to ISO 16602 and provides an evaluation of chemical protective suit integrity, particularly leakage in the breathing zone, under dynamic conditions through the use of human subjects.

28、 Part 3 specifies a method for determining the resistance of chemical protective clothing to penetration by jets of liquid chemicals. This procedure is applicable to clothing worn where there is a risk of exposure to a forceful projection of a liquid chemical and intended to be resistant to penetrat

29、ion under conditions which require total body surface cover but not gas-tight clothing. Part 4 specifies a method to be performed either at minimum test settings (method A, low-level spray test) or at more rigorous test settings (method B, high-level spray test), for determining the resistance of ch

30、emical protective clothing to penetration by sprays of liquid chemicals. This procedure applies to protective clothing intended to be worn when there is a risk of exposure to slight splashes of a liquid chemical or to spray particles that coalesce and run off the surface of the garment and intended

31、to be resistant to penetration under conditions which require total body surface cover but not gas-tight clothing. Part 5 specifies an alternative test method for determining the resistance to spray penetration. It uses a static manikin instead of a test subject; it also uses a different spray confi

32、guration and duration.The methods specified in this International Standard are not appropriate for evaluating the permeation or penetration of liquid chemicals through the material from which the clothing is made. ISO 2013 All rights reserved vBS ISO 17491-5:2013BS ISO 17491-5:2013Protective clothin

33、g - Test methods for clothing providing protection against chemicals Part 5: Determination of resistance to penetration by a spray of liquid (manikin spray test)1 ScopeThis part of ISO 17491 specifies an alternative test method to the one described in ISO 17491-4.The method for determining the resis

34、tance to chemical spray penetration differs from the method in ISO 17491-4 in that it uses a static manikin instead of a test subject. It also uses a different spray configuration and duration.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this docu

35、ment and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 13688, Protective clothing General requirementsISO/TR 11610, Protective clothing Vocabula

36、ry3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/TR 11610 and the following apply.3.1absorbent overalloverall made from an absorbent material, worn under the test suit and intended for collecting liquid penetration during spray and jet testing of che

37、mical protective clothing4 PrincipleThe chemical protective clothing is placed on a manikin that is already dressed in an absorbent overall covering the portions of the manikin form that are of interest. Water, treated to achieve a surface tension of ()30 5103N/m, is sprayed at the chemical protecti

38、ve clothing from five nozzles positioned in a specific configuration with respect to the specimen.The specimen is exposed to the liquid spray for a period of 15 min in each of four specimen orientations; thus 60 min spray in total on one specimen. Liquid penetration resistance is determined by the a

39、bsence of liquid inside the chemical protective clothing on the inner liquid-absorptive garment. The chemical protective clothing is rated as passing if liquid does not penetrate and as failing if liquid does penetrate.INTERNATIONAL STANDARD ISO 17491-5:2013(E) ISO 2013 All rights reserved 1BS ISO 1

40、7491-5:2013ISO 17491-5:2013(E)5 Test agent and test subject5.1 Test agent, unless specified in the performance specification, the following standard test agent shall be used.Prepare the test agent by dissolving a wetting agent and water-soluble fluorescent or visible dye in water at ambient temperat

41、ure to form a non-toxic, non-foaming solution with the following characteristics.The surface tension shall be ()30 5103N/m. Any method may be used to determine the surface tension of the test agent provided it can measure to the tolerance given above, for example, a Wright surface tension and interf

42、acial tension torsion balance using a standard 12-mm-diameter platinum ring would be acceptable.NOTE A typical concentrated solution can be made by dissolving 4 g methyl blue (CAS number 28983564), 2 ml anionic surfactant liquid sodium lauryl ether sulphate (CAS number 009004824), and, as stabilizer

43、 for the dye, 125 g citric acid (CAS number 77929, analytical grade) 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.It shall be ensured that the surface tension is stable throughout the test, i.e. the s

44、urface 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 coloure

45、d spot.The necessary measures shall be taken to avoid contamination of the surface water drainage system.5.2 Test subject, consisting of a human-form manikin, appropriately sized for testing the protective clothing or protective ensemble.The selected manikin should provide as much contact with the p

46、rotective clothing or protective ensemble as possible. The manikin shall have a water-resistant coating. The manikin shall have straight arms and legs with the arms at the manikins sides.The necessary measures shall be taken to protect the test subject and to avoid contamination of the surface water

47、 drainage system.6 Apparatus6.1 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 % in surface from the mean value for a given volume of liquid, when sample

48、d at any place on the garment.1)6.2 Calibration stain, shall be produced on every absorbent overall used under the test suit.This can be done before the spray test is performed or immediately afterwards.Select an area of the absorbent overall that is not likely to be contaminated. Put under it a pie

49、ce 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 calibration stain, such as a planimeter. The minimum area of the stain shall be 1 cm2.1) Details of suitable