1、March 2015 Translation by DIN-Sprachendienst.English price group 8No part of this translation 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 1
2、3.340.40!%ARD“2304733www.din.deDDIN EN 374-2Protective gloves against dangerous chemicals and micro-organisms Part 2: Determination of resistance to penetration;English version EN 374-2:2014,English translation of DIN EN 374-2:2015-03Schutzhandschuhe gegen gefhrliche Chemikalien und Mikroorganismen
3、Teil 2: Bestimmung des Widerstandes gegen Penetration;Englische Fassung EN 374-2:2014,Englische bersetzung von DIN EN 374-2:2015-03Gants de protection contre les produits chimiques et les micro-organismes dangereux Partie 2: Dtermination de la rsistance la pntration;Version anglaise EN 374-2:2014,Tr
4、aduction anglaise de DIN EN 374-2:2015-03SupersedesDIN EN 374-2:2003-12www.beuth.deDocument comprises 12 pagesIn case of doubt, the German-language original shall be considered authoritative.02.15DIN EN 374-2:2015-03 2 A comma is used as the decimal marker. National foreword This document (EN 374-2:
5、2014) has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the DIN-Normenausschuss Persnliche Schutzausrstung (DIN Standards Committee Perso
6、nal Protective Equipment), Working Committee NA 075-05-08 AA Handschutz. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 2859 DIN ISO 2859 (all parts) Amendments This standard differs from DIN EN 374-2:2003-12 as follows: a) reference to E
7、N 374-3 has been changed to EN 16523-1; b) there is no classification concerning effective barrier to micro-biological hazards by resistance to penetration; c) wording in test principles and test report has been rendered more precise; d) informative Annex A “Informative annex to be used for quality
8、assurance during production” (AQL) is not to be used for the purpose of production control, only e.g. by the manufacturer or auditing organization. Previous editions DIN 23304: 1966-03 DIN 23314: 1966-03 DIN 23315: 1966-03 DIN 23316: 1966-03 DIN 23317: 1969-04 DIN 23324: 1969-04 DIN 4841-1: 1976-12,
9、 1981-11, 1990-06 DIN 4841-2: 1979-05 DIN 4841-3: 1982-03 DIN 4841-5: 1987-01, 1987-04 DIN EN 374-2: 1994-04, 2003-12 National Annex NA (informative) Bibliography DIN ISO 2859 (all parts), Sampling procedures for inspection by attributes EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 374-2 Dec
10、ember 2014 ICS 13.340.40 Supersedes EN 374-2:2003English Version Protective gloves against dangerous 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 r
11、sistance la pntration Schutzhandschuhe gegen gefhrliche Chemikalien und Mikroorganismen - Teil 2: Bestimmung 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 th
12、e conditions for giving this European Standard the status of 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-CENELEC Management Centre or to any CEN member. This European Standard
13、 exists in three official versions (English, French, German). A version in any other language made by 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 nationa
14、l standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovak
15、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION 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
16、reserved worldwide for CEN national Members. Ref. No. EN 374-2:2014 EEN 374-2:2014 (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 te
17、st .5 6.2 Water leak test 6 7 Procedure .8 7.1 General 8 7.2 Air leak test .8 7.3 Water leak test 9 8 Test report 9 Annex A (informative) Informative annex to be used for quality assurance during production 10 DIN EN 374-2:2015-03 EN 374-2:2014 (E) 3 Foreword This document (EN 374-2:2014) has been p
18、repared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection 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 la
19、test by June 2015, and conflicting national standards shall be withdrawn at the latest by 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 resp
20、onsible for identifying any or all such patent rights. This document has been prepared under 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
21、 concerning effective barrier to micro-biological hazards by resistance to penetration; clearer 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
22、following parts under the general title, Protective gloves against chemicals and micro-organisms: - 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 resist
23、ance to degradation by chemicals - Part 5: Terminology and performance requirements for micro-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,
24、Croatia, Cyprus, Czech Republic, Denmark, Estonia, 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 a
25、nd the United Kingdom. DIN EN 374-2:2015-03 EN 374-2:2014 (E) 4 1 Scope This European Standard 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 no
26、rmatively referenced in this document 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. EN 374-1, Protective gloves against chemicals and micro-org
27、anisms - Part 1: Terminology and performance requirements ISO 2859 (all parts), Sampling procedures 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 i
28、mmersed in water, and its interior is pressurised with air. A leak is detected by a stream of 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 proc
29、edure is not suitable for all gloves. For example parts of some gloves may be overinflated while 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 are
30、a of 40 mm from the edge of the liquid proof area. 5 Sampling For the purpose of testing, the 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 thi
31、ckness of the liners disables the fitting on the mandrel. If one sample fails the penetration 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. DIN EN 374-2:2015-03 EN 374-2:2014 (E) 5 6 Apparatu
32、s 6.1 Air leak test 6.1.1 A circular fixing mandrel, tapered with an appropriate diameter range to 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 Me
33、ans of regulating the desired pressure. Figure 1 and Figure 2 show an example of a suitable apparatus. 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 DIN EN 374-2:2015-03 EN 374-2:2014 (E) 6 Key 1 Pre
34、ssure gauge 6 Pressure gauge 2 Flexible pipes 7 Pressure regulator 3 Non return valve 8 Instrument panel 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 i
35、s fitted with a hook at the upper end. The tube measures 380 mm in length and has a diameter wide enough to fit the gloves under test. It has a mark 40 mm from the lower end (see Figure 3). DIN EN 374-2:2015-03 EN 374-2:2014 (E) 7 Dimensions in millimetres Figure 3 Filltube with a hook 6.2.2 Elastic
36、 strapping with a “touch and close“ fastener or other fastening material. 6.2.3 Stand with horizontal rod for 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
37、capable of delivering a minimum of 1 000 ml water. 6.2.5 An alternative means of holding the glove may be used. 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 li
38、quid proof area. It shall be capable of holding water in excess of that required to fill the glove. DIN EN 374-2:2015-03 EN 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,
39、 lot number, size and brand of samples. Visually examine for tears, rips and holes. If these are present, the gloves 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
40、pressure of X kPa (see Table 1) plus an overpressure of 1 kPa per 100 mm of immersion measured at the fingertips closest 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 sh
41、all be reached with a 10 % limit deviation within 2 min and the control of possible air bubbles shall take an additional (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 DIN EN 374-2:2015-03 EN 374-2:2014 (E) 9 7.2.2 For glo
42、ves up to 250 mm in length the immersion shall be carried out with the hand vertically downwards so that the water covers 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)
43、 mm above the tip of the middle finger and so that the water covers the maximum possible surface of the glove. Rotate the 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 brin
44、ging the edge of the cuff to the 40 mm mark (see Figure 3) and fastening it with the elastic strap to make a watertight 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.
45、The water shall be at ambient temperature. Some of the 1 000 ml of water may remain in the fill tube depending on the glove 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 examine
46、d immediately for water leaks. The glove should not be squeezed. Only minimal handling is required to detect leaks. Water 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 atta
47、ched is suspended vertically (see Figure 4) and re-examined 2 min ( 10s) after the initial addition of water. Again, using 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 gl
48、ove; Visual inspection: pass or fail; Air leak test and water leak test: pass or fail; For the air leak test: air pressure used; Reason of non-testing of any of the penetration tests; Reporting of any deviation to the present standard. DIN EN 374-2:2015-03 EN 374-2:2014 (E) 10 Annex A (informative)
49、Informative annex to be used for quality assurance during production Gloves from a single lot or batch shall be sampled and 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 Performance level Acceptable quality level unit Inspection levels Level 3 0,65 G1 Level 2 1,5 G1 Level 1 4
