DIN EN 16523-2-2015 Determination of material resistance to permeation by chemicals - Part 2 Permeation by gaseous chemical under conditions of continuous contact German version EN.pdf

1、April 2015 Translation by DIN-Sprachendienst.English price group 9No 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、3.340.01!%BEnglish version EN 16523-2:2015,English translation of DIN EN 16523-2:2015-04Bestimmung des Widerstands von Materialien gegen die Permeation von Chemikalien Teil 2: Permeation durch eine gasfrmige Chemikalie unter Dauerkontakt;Englische Fassung EN 16523-2:2015,Englische bersetzung von DIN

3、 EN 16523-2:2015-04Dtermination de la rsistance des matriaux la permation par des produitschimiques Partie 2: Permation par un produit chimique gazeux dans des conditions de contactcontinu;Version anglaise EN 16523-2:2015,Traduction anglaise de DIN EN 16523-2:2015-04www.beuth.deIn case of doubt, the

4、 German-language original shall be considered authoritative.Document comprises 13 pages 03.15 DIN EN 16523-2:2015-04 2 A comma is used as the decimal marker. Start of application The start of application of this standard is 2015-04-01. National foreword This standard includes safety requirements. Th

5、is document (EN 16523-2:2015) 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 S

6、tandards Committee Personal Protective Equipment), Working Committee NA 075-05-13 AA Testverfahren fr Permeation von Chemikalien durch Materialien fr Schuhe, Handschuhe und Kleidung. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16523-2 February 2015 ICS 13.340.01 English Version Determinatio

7、n of material resistance to permeation by chemicals - Part 2: Permeation by gaseous chemical under conditions of continuous contact Dtermination de la rsistance des matriaux la permation par des produits chimiques - Partie 2: Permation par un produit chimique gazeux dans des conditions de contact co

8、ntinu Bestimmung des Widerstands von Materialien gegen die Permeation von Chemikalien - Teil 2: Permeation durch eine gasfrmige Chemikalie unter Dauerkontakt This European Standard was approved by CEN on 5 December 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which

9、 stipulate the 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 Euro

10、pean Standard 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 ar

11、e the national 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, Ro

12、mania, Slovakia, 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 2015 CEN All rights of exploitation in any form and

13、by any means reserved worldwide for CEN national Members. Ref. No. EN 16523-2:2015 EEN 16523-2:2015 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Test principle 5 5 Collecting media 5 6 Apparatus .6 6.1 General 6 6.2 Sampling compartme

14、nt of the challenge chemical 6 6.3 Challenge gas introduction system .6 7 Test specimens 6 8 Procedure .6 8.1 Calibration 6 8.2 Preparation of test specimens and apparatus 6 8.3 Test procedure .7 8.4 Calculation of results 8 8.5 Expression of results 8 8.6 Uncertainty of measurements 8 9 Test report

15、 8 Annex A (informative) Example of appropriate technique for the detection of gaseous chemicals 9 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC on PPE . 10 Bibliography . 11 DIN EN 16523-2:2015-04 EN 16523-2:2015(E)3 For

16、eword This document (EN 16523-2:2015) 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. This European Standard shall be given the status of a national standard, either by publication o

17、f an identical text or by endorsement, at the latest by August 2015 and conflicting national standards shall be withdrawn at the latest by August 2015. 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 b

18、e held responsible 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, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see inform

19、ative Annex ZA, which is an integral part of this document. EN 16523, Determination of material resistance to permeation by chemicals, is composed of the following parts: Part 1: Permeation by liquid chemical under conditions of continuous contact; Part 2: Permeation by gaseous chemical under condit

20、ions of continuous contact the present document. NOTE CEN/TC 162 WG 13 has foreseen to work on other test methods in the future that will spread in several standard parts: Permeation by solid chemical under conditions of continuous contact; Permeation by chemical under conditions of intermittent con

21、tact; Permeation by chemical of seams, joins, assemblages and closers; Permeation by chemical in a form of droplets; Guide on testing and interpretation. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eur

22、opean Standard: 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, Slovakia, Sl

23、ovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16523-2:2015-04 EN 16523-2:2015(E)4 Introduction This European Standard is used in conjunction with EN 16523-1. A future part of EN 16523 will explain the use of the series of standards EN 16523. This standard includes only th

24、e specific aspects linked with the testing with gaseous challenge chemicals. DIN EN 16523-2:2015-04 EN 16523-2:2015 (E) 5 1 Scope This European Standard specifies a test method for the determination of the resistance of protective clothing, gloves and footwear materials to permeation by potentially

25、hazardous gaseous chemicals under the condition of continuous contact. This test method is applicable to the assessment of protection against gazeous chemicals that can be collected only by liquid or gaseous collecting media. This test method is not adapted for the assessment of gaseous chemical mix

26、tures. This test method describes the modifications to EN 16523-1 necessary to test against gaseous chemicals that can be collected by liquid or gaseous collecting media. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispen

27、sable 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 16523-1:2015, Determination of material resistance to permeation by chemicals Part 1: Permeation by liquid che

28、mical under conditions of continuous contact 3 Terms and definitions For the purposes of this document, the terms and definitions in EN 16523-1:2015 together with the following apply. 3.1 gaseous challenge chemical chemical that is gaseous at the test conditions (atmospheric pressure and 23 C) and t

29、hat is used to challenge the PPE (protective clothing, gloves and footwear) material specimen Note 1 to entry: Annex A lists the most common gaseous challenge chemicals. Other gases may be tested. Note 2 to entry: The gas may be either pure or diluted in air or in nitrogen. 4 Test principle The resi

30、stance of a PPE (protective clothing, gloves and footwear) material to permeation by a gaseous chemical is determined by measuring the normalized breakthrough time (NBT). In the permeation test apparatus, the PPE (protective clothing, gloves and footwear) material separates the challenge chemical fr

31、om the collecting medium. The collecting medium, which can be a gas or, a liquid, is analysed quantitatively for its concentration of the chemical and thereby the amount of that chemical that has permeated the barrier as a function of time after its initial contact with the PPE (protective clothing,

32、 gloves and footwear) material. 5 Collecting media See EN 16523-1:2015, Clause 5. When selecting the collecting media, the following points should be taken in consideration: a) oxidation; DIN EN 16523-2:2015-04 EN 16523-2:2015 (E) 6 b) solubility; c) hydrolysis; d) other items as appropriate. 6 Appa

33、ratus 6.1 General See EN 16523-1:2015, Clause 6, except for the sampling compartment of the challenge chemical. 6.2 Sampling compartment of the challenge chemical The sampling compartment for the challenge chemical is described in Figure 1. Key 1 sampling compartment for challenge chemical 2 pipe (i

34、n and out) for the gas setting, whose diameter shall be sufficiently large to avoid any deformation of the sample by the pressure of the incoming gas Figure 1 Important dimensions for the sampling compartment for challenge chemical 6.3 Challenge gas introduction system The challenge gas shall be reg

35、ulated to a pressure just above ambient. This pressure shall be sufficient to allow a flow of (5 0,5) volumes of cell per minute without any significant deformation of the test piece. 7 Test specimens See EN 16523-1:2015, Clause 7. 8 Procedure 8.1 Calibration See EN 16523-1:2015, 8.1. 8.2 Preparatio

36、n of test specimens and apparatus See EN 16523-1:2015, 8.2. DIN EN 16523-2:2015-04 EN 16523-2:2015 (E) 7 8.3 Test procedure The test temperature shall be (23 1) C. The challenge gaseous chemical entering in the permeation cell and the collecting medium shall be at (23 1) C. Permeation is affected by

37、 temperature and so additional tests may be run at other temperatures if they are relevant to the use of the PPE (protective clothing, gloves and footwear). The collecting medium is connected to the cell and the flow adjusted to the required rate (see EN 16523-1:2015, 6.3). Then the detection equipm

38、ent (see EN 16523-1:2015, 6.5) is connected. The signal of the detector is observed to verify the blank steady-state. After a few minutes (between 1 min and 5 min) of blank steady-state, the following procedure shall be followed. a) The flow of the test gas into the challenge chamber of the permeati

39、on test cell (the chamber to which the normal outside surface of the material specimen is facing) shall be commenced. Timing of the test begin once the equivalent of 5 chamber volumes of gas have passed through the chamber as determined by the mean of a rotameter or other monitoring device placed in

40、 the inlet stream of the chamber. The volumes of gas shall be passed through the chamber within approximately 1 min. Following this initial period, the gas flow may be reduced to a minimal level sufficient to ensure that the sample is always in contact with the test gas and that no air can leak-back

41、 into the challenge chamber. If the test is to be carried out at a non-ambient temperature, the challenge gas should be brought to the non-ambient temperature before it enters the test cell. b) Care shall be taken so as not to pressurize the challenge or collection chamber. Overly high pressures may

42、 develop at high gas flow or as a result of attachments that restrict the flow of gas from the chamber. Tightly-packed activated carbon beds or highly restrictive sparger tubes are examples of such attachments. The concentration of the chemical test in the collecting medium shall be measured periodi

43、cally or continuously. For periodical measurement, the number of measurement shall be sufficient to define the breakthrough time. The frequency of analysis of the collecting medium immediately before the time at which the NPR is measured shall be as listed in Table 1. Table 1 Minimum sampling rates

44、for collection medium Final result Minimum rate of sampling 10 min Every 75 s 10 min but 30 min Every 150 s 30 min but 60 min Every 150 s 60 min but 120 min Every 6 min 120 min but 240 min Every 6 min 240 min but 480 min Every 11 min 480 min At least one measurement after 8 h In cases where the resu

45、lt cannot reliably be estimated more frequent analysis may be prudent. NOTE 1 The values of 75 s, 150 s, 6 min and 11 min are intended as maximum permissible values of nominal 60 s, 120 s, 5 min and 10 min sampling frequencies. DIN EN 16523-2:2015-04 EN 16523-2:2015 (E) 8 NOTE 2 For certain chemical

46、s, the continuous analysis is not possible (complexity, specificity, use of complex detection techniques). The NBT is deemed to have occurred when the permeation rates of the challenge chemical reaches the NPR; see EN 16523-1:2015, 8.5.1 and 8.5.2. If required, continue the test until the permeation

47、 steady-state (see EN 16523-1:2015, Figure 1) has been reached. The 3 test specimens shall be tested. Each visual change (with the naked eye optical devices,) in the test specimen after the test shall be registered (see EN 16523-1:2015, Annex B). The test can be stopped in case a severe degradation

48、of the test specimen or saturation of the detector or any situation that damages the test equipment. 8.4 Calculation of results See EN 16523-1:2015, 8.4. 8.5 Expression of results See EN 16523-1:2015, 8.5. 8.6 Uncertainty of measurements See EN 16523-1:2015, 8.6. 9 Test report Apply EN 16523-1:2015, Clause 9, except for the indented line 2, the reference to this standard shall be made. DINEN 16523-2:2015-04EN 16523-2:2015 (E) 9 Annex A (informative) Example of appropriate technique for the detect