EN 374-2-2014 en Protective gloves against dangerous chemicals and micro-organisms - Part 2 Determination of resistance to penetration《防危险化学品和微生物的手套 第2部分 耐渗透性的测定》.pdf

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1、BSI Standards PublicationBS EN 374-2:2014Protective gloves againstdangerous chemicals andmicro-organismsPart 2: Determination of resistance topenetrationBS EN 374-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 374-2:2014. Itsupersedes BS EN 374-2:2003 wh

2、ich is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/8, Protective gloves.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contra

3、ct. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 82485 2ICS 13.340.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authori

4、ty of theStandards Policy and Strategy Committee on 31 January 2015.Amendments issued since publicationDate Text affectedBS EN 374-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 374-2 December 2014 ICS 13.340.40 Supersedes EN 374-2:2003English Version Protective gloves against dangerous

5、chemicals and micro-organisms - Part 2: Determination of resistance to penetration Gants de protection contre les produits chimiques et les micro-organismes dangereux - Partie 2 : Dtermination de la rsistance la pntration Schutzhandschuhe gegen gefhrliche Chemikalien und Mikroorganismen - Teil 2: Be

6、stimmung des Widerstandes gegen Penetration This European Standard was approved by CEN on 22 November 2014. 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 alterat

7、ion. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 b

8、y translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

9、 Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARD

10、IZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 374-2:2014 EBS EN 374-2:2014EN 374-2:2014 (

11、E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle of tests 4 4.1 Air leak test .4 4.2 Water leak test 4 4.3 Remarks 4 5 Sampling .4 6 Apparatus .5 6.1 Air leak test .5 6.2 Water leak test 6 7 Procedure .8 7.1 General 8 7.2 Air leak test .8 7.3 Wa

12、ter leak test 9 8 Test report 9 Annex A (informative) Informative annex to be used for quality assurance during production 10 BS EN 374-2:2014EN 374-2:2014 (E) 3 Foreword This document (EN 374-2:2014) has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm pro

13、tection and lifejackets”, the secretariat of which is held by DIN. 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 June 2015, and conflicting national standards shall be withdrawn at the latest by

14、 June 2015. This document supersedes EN 374-2:2003. 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 has been prepared un

15、der a mandate given to CEN by the European Commission and the European Free Trade Association. The major changes in comparison to EN 374-2:2003 are: reference to EN 374-3 changed to EN 16523-1; no classification concerning effective barrier to micro-biological hazards by resistance to penetration; c

16、learer wording in test principles and test report; informative Annex A (AQL) not be tested, for the purpose of production control only, e. g. by the manufacturer or auditing organization. EN 374 consists of the following parts under the general title, Protective gloves against chemicals and micro-or

17、ganisms: - Part 1: Terminology and performance requirements - Part 2: Determination of resistance to penetration - Part 3: Determination of resistance to permeation by chemicals - Part 4: Determination of resistance to degradation by chemicals - Part 5: Terminology and performance requirements for m

18、icro-organisms risks According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of M

19、acedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 374-2:2014EN 374-2:2014 (E) 4 1 Scope This European Standard

20、 specifies a test method for the penetration resistance of gloves that protect against dangerous chemicals and/or micro-organisms. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated ref

21、erences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 374-1, Protective gloves against chemicals and micro-organisms - Part 1: Terminology and performance requirements ISO 2859 (all parts), Sampling proce

22、dures and tables for inspection by attributes 3 Terms and definitions For the purposes of this document the terms and definitions given in EN 374-1 apply. 4 Principle of tests 4.1 Air leak test A glove is immersed in water, and its interior is pressurised with air. A leak is detected by a stream of

23、air bubbles from the surface of the glove. 4.2 Water leak test A glove is filled with water. A leak is detected by the appearance of water droplets on the outside of the glove. 4.3 Remarks The air leak procedure is not suitable for all gloves. For example parts of some gloves may be overinflated whi

24、le other parts of the same gloves can only be partially inflated. If the air leak test proves unsuitable, then only the water penetration test is carried out. For both methods disregard leaks within the area of 40 mm from the edge of the liquid proof area. 5 Sampling For the purpose of testing, the

25、test sample will be one glove of each size, with an overall minimum of 4 samples per performed test. For certain reasons some gloves cannot be tested, e.g. non-homogenous overinflating of the samples or thickness of the liners disables the fitting on the mandrel. If one sample fails the penetration

26、test, the test shall be reported as having failed. For the purpose of production control, e. g. by the manufacturer or auditing organisation, see Annex A. BS EN 374-2:2014EN 374-2:2014 (E) 5 6 Apparatus 6.1 Air leak test 6.1.1 A circular fixing mandrel, tapered with an appropriate diameter range to

27、effect an airtight seal with the glove to be tested. It should be capable of rotation through 180. 6.1.2 Means of air inflation. 6.1.3 Water tank. 6.1.4 Pressure gauge reading 0 kPa to 10 kPa. 6.1.5 Means of regulating the desired pressure. Figure 1 and Figure 2 show an example of a suitable apparat

28、us. Key 1 To pressure gauge 2 Non-return valve 3 To instrument panel 4 Circular fixing mandrel Figure 1 Enlarged detail of the circular fixing mandrel BS EN 374-2:2014EN 374-2:2014 (E) 6 Key 1 Pressure gauge 6 Pressure gauge 2 Flexible pipes 7 Pressure regulator 3 Non return valve 8 Instrument panel

29、 4 Circular fixing mandrel 9 Compressed air supply 5 Water supply 10 Tank Figure 2 Typical arrangement of air pressure testing apparatus 6.2 Water leak test 6.2.1 A clear open ended plastic tube is fitted with a hook at the upper end. The tube measures 380 mm in length and has a diameter wide enough

30、 to fit the gloves under test. It has a mark 40 mm from the lower end (see Figure 3). BS EN 374-2:2014EN 374-2:2014 (E) 7 Dimensions in millimetres Figure 3 Filltube with a hook 6.2.2 Elastic strapping with a “touch and close“ fastener or other fastening material. 6.2.3 Stand with horizontal rod for

31、 hanging the hook end of the tube (see Figure 4). The supported rod shall be capable of taking the weight of the total number of gloves that will be suspended at any one time. 6.2.4 A device capable of delivering a minimum of 1 000 ml water. 6.2.5 An alternative means of holding the glove may be use

32、d. The apparatus shall be capable of securing the glove on a mandrel, with a diameter appropriate to fit the glove, so that it can be filled with water to within 40 mm from the edge of the liquid proof area. It shall be capable of holding water in excess of that required to fill the glove. BS EN 374

33、-2:2014EN 374-2:2014 (E) 8 Figure 4 Stand for suspending the filltube 7 Procedure 7.1 General Carefully remove the glove from the wrapper, box or its packaging. Record the identity code, lot number, size and brand of samples. Visually examine for tears, rips and holes. If these are present, the glov

34、es shall be reported as having failed. 7.2 Air leak test 7.2.1 The glove is fastened to the circular mandrel and is inflated after immersion at ambient temperature, with air, to a gauge pressure of X kPa (see Table 1) plus an overpressure of 1 kPa per 100 mm of immersion measured at the fingertips c

35、losest to the bottom of the water tank. For example, for 250 mm of immersion at the fingertips, 2,5 kPa shall be added to the air pressure specified in Table 1. The inflation pressure shall be reached with a 10 % limit deviation within 2 min and the control of possible air bubbles shall take an addi

36、tional (30 5) s. Table 1 Air pressure Nominal glove thickness (e) mm As provided by the manufacturer Air pressure (X) kPa e 1,0 6,0 BS EN 374-2:2014EN 374-2:2014 (E) 9 7.2.2 For gloves up to 250 mm in length the immersion shall be carried out with the hand vertically downwards so that the water cove

37、rs the maximum possible surface of the glove. For gloves over 250 mm in length the immersion is to be carried out, with the hand at a downward angle, to a vertical depth of (250 10) mm above the tip of the middle finger and so that the water covers the maximum possible surface of the glove. Rotate t

38、he mandrel and examine the whole glove surface for the emergence of air bubbles (see Figure 2). 7.3 Water leak test 7.3.1 The glove is attached to an open-ended plastic tube by bringing the edge of the cuff to the 40 mm mark (see Figure 3) and fastening it with the elastic strap to make a watertight

39、 seal. 7.3.2 A minimum of 1 000 ml of water is added through the tube to fill the glove completely and to reach at least the 40 mm mark level of the liquid proof area of the glove. The water shall be at ambient temperature. Some of the 1 000 ml of water may remain in the fill tube depending on the g

40、love being tested. If it is required, the glove can be supported by some suitable means in order to avoid excessive distortion from the weight of water. 7.3.3 The gloves are examined immediately for water leaks. The glove should not be squeezed. Only minimal handling is required to detect leaks. Wat

41、er droplets may be blotted to confirm leakage, or talcum powder may be used to enhance droplet visibility. 7.3.4 If the glove does not leak immediately, the tube with the glove attached is suspended vertically (see Figure 4) and re-examined 2 min ( 10s) after the initial addition of water. Again, us

42、ing minimum handling, the glove surface is checked for leaks. 8 Test report The test report shall include: A reference to this International Standard; Full identity of the tested glove; Visual inspection: pass or fail; Air leak test and water leak test: pass or fail; For the air leak test: air press

43、ure used; Reason of non-testing of any of the penetration tests; Reporting of any deviation to the present standard. BS EN 374-2:2014EN 374-2:2014 (E) 10 Annex A (informative) Informative annex to be used for quality assurance during production Gloves from a single lot or batch shall be sampled and

44、inspected in accordance with ISO 2859 (all parts). The inspection levels and acceptable quality levels (AQL) shall comply with those given in Table A.1 or as agreed between the purchaser and the seller, if the latter is more stringent. Table A.1 Inspection levels and acceptable quality levels Perfor

45、mance level Acceptable quality level unit Inspection levels Level 3 0,65 G1 Level 2 1,5 G1 Level 1 4,0 S4 This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Ro

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