1、October 2015 Translation by DIN-Sprachendienst.English price group 16No 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).IC
2、S 13.220.40; 53.040.20!%Fm“2357456www.din.deDIN EN 12881-1Conveyor belts Fire simulation flammability testing Part 1: Propane burner tests;English version EN 128811:2014,English translation of DIN EN 12881-1:2015-10Frdergurte Brandtechnische Prfungen Teil 1: Prfungen mit dem Propanbrenner;Englische
3、Fassung EN 128811:2014,Englische bersetzung von DIN EN 12881-1:2015-10Courroies transporteuses Essais de simulation dinflammation Partie 1: Essais avec brleur propane;Version anglaise EN 128811:2014,Traduction anglaise de DIN EN 12881-1:2015-10SupersedesDIN EN 128811:201411 andDIN 22118:199108www.be
4、uth.deDocument comprises 38 pagesIn case of doubt, the German-language original shall be considered authoritative.D09.15DIN EN 12881-1:2015-10 2 A comma is used as the decimal marker. National foreword This document (EN 12881-1:2014) has been prepared by Technical Committee CEN/TC 188 “Conveyor belt
5、s” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation was the DIN-Normenausschuss Kautschuktechnik (DIN Standards Committee Rubber Technology), Working Committee NA 045-02-05 AA Frdergurte. This standard contains specifications giving detail to the essential req
6、uirements set out in Annex I of the “Machinery Directive”, Directive 2006/42/EC, and which apply to machines that are either first placed on the market or commissioned within the EEA. This standard serves to facilitate proof of compliance with the essential requirements of that directive. Once this
7、standard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (“presumption of conformity”). The DIN Standards corresponding to the European
8、Standards referred to in Clause 2 of this standard are as follows: EN 10088-3 DIN EN 10088-3 EN 22768-1 DIN ISO 2768-1 Amendments This standard differs from DIN EN 12881-1:2010-01 as follows: a) the standard has been editorially revised; b) in Clause 6 “Method C Mid-scale fire propagation test”, Sub
9、clause 6.1.1 “Test gallery”, the thermal conductivity of the refractory material has been included; c) in Clause 6 “Method C Mid-scale fire propagation test”, Subclause 6.1.4 “Gas burner”, the diameter of the bore jets used has been added; d) Clause 7 “Method D Laboratory scale fire propagation test
10、” has been added. Compared with DIN EN 12881-1:2014-11, the following corrections have been made: a) DIN 22118:1991-08 has been added to the previous editions; b) the standard has been editorially revised. Previous editions DIN 22118: 1991-08 DIN EN 12881-1: 2006-04, 2010-01, 2014-11 DIN EN 12881-1:
11、2015-10 3 National Annex NA (informative) Bibliography DIN EN 10088-3, Stainless steels Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes DIN ISO 2768-1, General tolerances Tolerances fo
12、r linear and angular dimensions without individual tolerance indications DIN EN 12881-1:2015-10 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12881-1 May 2014 ICS 13.220.40; 53.040.20 Supersedes EN 12881-1:2005+A1:2008English Version Conveyor belts - Fire si
13、mulation flammability testing - Part 1: Propane burner tests Courroies transporteuses - Essais de simulation dinflammation - Partie 1: Essais avec brleur propane Frdergurte - Brandtechnische Prfungen - Teil 1: Prfungen mit dem Propanbrenner This European Standard was approved by CEN on 15 February 2
14、014. 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained
15、 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 by translation under the responsibility of a CEN member into its own language and notified to the CEN-CE
16、NELEC 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, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, It
17、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Av
18、enue 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 12881-1:2014 EEN 12881-1:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Propane gas supply .5 4 Method A
19、 null Two metre single burner test .6 4.1 Apparatus .6 4.2 Preparation of test pieces .9 4.3 Temperature at commencement of test 9 4.4 Number of tests 9 4.5 Procedure .9 4.6 Termination of tests 10 4.7 Measurement of damage to test pieces . 10 4.8 Test report . 11 5 Method B null Double burner test
20、. 12 5.1 Apparatus 12 5.2 Preparation of test pieces 13 5.3 Temperature at commencement of test . 13 5.4 Number of tests . 13 5.5 Procedure 14 5.6 Termination of tests 14 5.7 Measurement of damage to test pieces . 14 5.8 Test report . 15 6 Method C null Mid-scale fire propagation test . 15 6.1 Appar
21、atus 15 6.2 Preparation of test pieces 23 6.3 Installation of the test pieces and burner 23 6.4 Temperature at commencement of test . 23 6.5 Number of tests . 23 6.6 Procedure 23 6.7 Termination of tests 24 6.8 Measurement of damage to test pieces . 24 6.9 Exhaust temperature calibration . 25 6.10 T
22、est report . 25 7 Method D Laboratory scale Fire Propagation Test . 26 7.1 Apparatus 26 7.2 Preparation of test pieces 27 7.3 Installation of the test piece and burner 27 7.4 Test Conditions . 27 7.5 Procedure 27 7.6 Termination of tests 28 7.7 Measurement of damage to test pieces . 28 7.8 Test repo
23、rt . 28 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 33 Bibliography . 34 DIN EN 12881-1:2015-10 EN 12881-1:2014 (E) 3 Foreword This document (EN 12881-1:2014) has been prepared by Technical Committee CEN/TC 188 “Conve
24、yor belts”, the secretariat of which is held by SNV. 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 November 2014 and conflicting national standards shall be withdrawn at the latest by November 2
25、014. 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 12881-1:2005+A1:2008. This document has been prepared
26、 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 informative Annex ZA, which is an integral part of this document. The main changes with respect to the
27、previous edition are listed below: Laboratory scale fire propagation test was added (Method D); Mid-scale fire propagation test (Method C, 6.1.1 Test gallery) thermal conductivity of the refractory material was included; Mid-scale fire propagation test (Method C, 6.1.4 Gas burner) the diameter of th
28、e bore jets used was added. 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 Republ
29、ic 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 the United Kingdom. DIN EN 12881-1:2015-10 EN 12881-1:2014 (E) 4 Introduction T
30、his European Standard is a type B1 standard as stated in EN ISO 12100. The provisions of this European Standard may be supplemented or modified by a type C standard. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of thi
31、s European Standard. NOTE For machines which are covered by the scope of a type C standard and which have been designed and built according to the provisions of that standard, the provisions of that type C standard take precedence over the provisions of this type B1 standard. The methods of test des
32、cribed in EN 12881-1 are intended to provide an indication of the reaction of a conveyor belt to a fire situation. However, in doing so attention is drawn to the fact that in assessing the overall flammability characteristics of conveyor belting for specific installations, it is not sufficient to re
33、ly solely on any single method of test but consideration has also to be given to the individual site location. WARNING The tests described in EN 12881-1 can generate large amounts of smoke and heat. It is therefore essential to conduct the tests with caution, having due regard to health and safety c
34、onsiderations and to terminate any test immediately if at any time it is considered advisable to do so. In this regard it is recommended that no test should be supervised by only one person. DIN EN 12881-1:2015-10 EN 12881-1:2014 (E) 5 1 Scope EN 12881-1 describes four methods for measuring the prop
35、agation of a flame along a conveyor belt which has been exposed to a relatively high localized heat source such as a fire. The damage suffered by the conveyor belt, as well as its tendency to support combustion, is measured by observing the extent to which the fire spreads along the test piece. Meth
36、od A uses a test piece 2 m in length and consumes propane gas through the burner at the rate of (1,30 0,05) kg per 10 min. Method B uses a test piece 2,5 m in length and consumes propane gas through two burners mounted above and below the test piece trestle at the rate of (1,30 0,05) kg per 10 min f
37、or each burner. Method C uses a test piece 1,5 m in length and consumes propane gas through the burner at the rate of (565 10) g per 50 min. Method D uses a test piece 1,2 m in length and consumes propane gas through the burner at the rate of 150 l/hr (D1) or 190 l/hr (D2). 2 Normative references Th
38、e following documents, in whole or in part, are normatively 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 10088-
39、3, Stainless steels Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes EN 22768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance ind
40、ications (ISO 2768-1) ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1 ISO 9162, Petroleum products Fuels (class F) Liquefied petroleum gases Specifications 3 Propane gas supply The burners used in each method shall be supplied from bottled propane gas complying with ISO 9
41、162 which shall be fed to each burner, using high pressure propane hose having a minimum internal diameter of 6,3 mm, either: a) through a pressure reducing valve, a non-return valve and an orifice plate 1,7 mm thick with a 2,5 mm diameter hole; or b) through a pressure reducing valve and a non-retu
42、rn valve followed by a flow meter calibrated to ensure that the correct mass of gas is consumed. Before and during the test, immerse each gas cylinder to approximately two-thirds of its height in a bath of water at a temperature of (25 3) C. Ensure that each gas cylinder is not emptied at the end of
43、 a test by more than 90 % of its gas mass capacity. DIN EN 12881-1:2015-10 EN 12881-1:2014 (E) 6 4 Method A null Two metre single burner test 4.1 Apparatus 4.1.1 Gallery (see Figure 1) having a cross section not greater than 6 m2, a height of not less than 1,9 m and not greater than 2,25 m and a wid
44、th of not less than 1,9 m and not greater than 2,75 m through which air is drawn by an adjustable fan. The gallery shall have a concrete floor and shall be not less than 15,0 m long measured from the gallery entrance. 4.1.2 Trestle (see Figure 2) comprising a framework having internal dimensions 2,2
45、5 m long x 1,25 m wide and constructed of steel tubing complying with ISO 65, having a bore designation of DN 15 heavy series. The upper sides of the trestle frame shall be fitted with rod retainers to position and retain 15 steel bars manufactured from an austenitic chrome/nickel steel of an approp
46、riate quality, such as 1.4310X10CrNi18-8 complying with EN 10088-3, resistant to rust, acid and heat. The bars shall be 10 mm diameter x 1,4 m in length and form the frame on which the belting rests. The upper surface of the bars shall be 350 mm from the floor. 4.1.3 Burner, constructed in accordanc
47、e with Figure 3, comprising a square having side dimensions of (450 9) mm and an overall height of (220 5) mm. The burner shall be made of welded steel tube complying with ISO 65, having a bore designation of DN 15 medium or heavy series. The tubing shall have 52 holes, each having a diameter of (1,
48、5 0,1) mm, spaced at 50 mm intervals. 4.1.4 Anemometer, or other means of measuring the air velocity in the gallery, which shall be located at a height of 350 mm on the centreline of the gallery, at least 7,25 m inside the gallery entrance and 750 mm from the end of the trestle nearest the gallery e
49、ntrance. It is important that the air flow in the gallery is laminar and to this end equipment to assist in producing laminar flow may be used. 4.1.5 Thermocouple, to measure the temperature of the incoming air, located as shown in Figure 1. DIN EN 12881-1:2015-10 EN 12881-1:2014 (E) 7 Dimensions in millimetres a) Plan view of gallery b) Cross-section of front of gallery Key 1 rear of gallery 2 position of thermocouple on centre line 3 front of gallery Figure 1 Location of thermocouple for measuring th
