DIN EN 15414-3-2011 Solid recovered fuels - Determination of moisture content using the oven dry method - Part 3 Moisture in general analysis sample German version EN 15414-3 2011《.pdf

1、May 2011 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 75.

2、160.10!$p_i“1776070www.din.deDDIN EN 15414-3Solid recovered fuels Determination of moisture content using the oven dry method Part 3: Moisture in general analysis sampleEnglish translation of DIN EN 15414-3:2011-05Feste Sekundrbrennstoffe Bestimmung des Wassergehaltes unter Verwendung des Verfahrens

3、 der Ofentrocknung Teil 3: Wassergehalt in gewhnlichen AnalysenprobenEnglische bersetzung von DIN EN 15414-3:2011-05Combustibles solides de rcupration Dtermination de lhumidit par la mthode de schage ltuve Partie 3: Humidit de lchantillon pour analyse gnraleTraduction anglaise de DIN EN 15414-3:2011

4、-05SupersedesDIN CEN/TS 15414-3:2007-01www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1204.11 DIN EN 15414-3:2011-05 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee C

5、EN/TC 343 “Solid recovered fuels” (Secretariat: SFS, Finland). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05-83 AA Sekundrbrennstoffe. The DIN Standard corresponding to the Internati

6、onal Standard referred to in this document is as follows: ISO 5725-5 DIN ISO 5725-5 Amendments This standard differs from DIN CEN/TS 15414-3:2007-01 as follows: a) the prestandard status has been changed to that of a full standard; b) the use of automatic equipment has been permitted under specific

7、conditions; c) the specification to observe a defined repeatability limit has been deleted: d) Annex A (informative) “Interlaboratory test results” has been included; e) the standard has been editorially revised. Previous editions DIN CEN/TS 15414-3: 2007-01 National Annex NA (informative) Bibliogra

8、phy DIN ISO 5725-5, Accuracy (trueness and precision) of measurement methods and results Part 5: Alternative methods for the determination of the precision of a standard measurement method 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15414-3 March 2011 ICS 75.160.10 Supersedes CEN/TS 15414

9、-3:2006English Version Solid recovered fuels - Determination of moisture content using the oven dry method - Part 3: Moisture in general analysis sample Combustibles solides de rcupration - Dtermination de lhumidit par la mthode de schage ltuve - Humidit de lchantillon pour analyse gnrale Feste Seku

10、ndrbrennstoffe - Bestimmung des Wassergehaltes unter Verwendung des Verfahrens der Ofentrocknung - Teil 3: Wassergehalt in gewhnlichen Analysenproben This European Standard was approved by CEN on 22 January 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula

11、te 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 European Sta

12、ndard 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 na

13、tional standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz

14、erland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.

15、EN 15414-3:2011: EEN 15414-3:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .46 Sample preparation .57 Procedure .58 Calculation 59 Precision .610 Test report 6Annex A (informative) Interlaboratory test results 7Bibliography . 1

16、0DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 3 Foreword This document (EN 15414-3:2011) has been prepared by Technical Committee CEN/TC 343 “Solid recovered fuels”, the secretariat of which is held by SFS. This European Standard shall be given the status of a national standard, either by publication

17、of an identical text or by endorsement, at the latest by September 2011, and conflicting national standards shall be withdrawn at the latest by September 2011. This document supersedes CEN/TS 15414-3:2006. Attention is drawn to the possibility that some of the elements of this document may be the su

18、bject 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 under a mandate given to CEN by the European Commission and the European Free Trade Association. CEN/TS 15414/EN 15414 Solid recovered fuels Determi

19、nation of moisture content using the oven dry method consists of the following parts: Part 1: Determination of total moisture by a reference method Part 2: Determination of total moisture content by a simplified method Part 3: Moisture in general analysis sample This document differs from CEN/TS 154

20、14-3:2006 mainly as follows: a) use of automatic equipments under specific conditions permitted; b) specification to observe a defined repeatability limit deleted; c) results of interlaboratory tests supplemented as an informative Annex A; d) whole document editorially revised. According to the CEN/

21、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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith

22、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 4 1 Scope This European Standard specifies a method for the determination of moisture in an analysis sample by dryin

23、g the sample in an oven. This method is suitable for use for general analysis samples in accordance with CEN/TS 15414-1. It is applicable to all solid recovered fuels. NOTE 1 The term moisture content when used with recovered materials can be misleading since solid recovered materials e.g. biomass f

24、requently contain varying amounts of volatile compounds (extractives) which can evaporate when determining the moisture content of the general analyses sample by oven drying. NOTE 2 This European Standard is based on EN 14774-3. 2 Normative references The following referenced documents are indispens

25、able for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 15357:2011, Solid recovered fuels Terminology, definitions and descriptions EN 15443, Solid re

26、covered fuels Methods for the preparation of the laboratory sample 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15357:2011 apply. 4 Principle The analysis sample of recovered fuel is dried at a temperature of 105 C under air atmosphere, nitrogen at

27、mosphere or vacuum conditions. The percentage of moisture is calculated from the loss in mass of the test sample. If the sample material is susceptible to oxidation (at 105 C), drying in nitrogen atmosphere or vacuum conditions is performed. 5 Apparatus 5.1 Drying oven, capable of being controlled a

28、t (105 2) C (see declaration of the manufacturer) and in which the air atmosphere changes between three and five times per hour. The air velocity shall be such that the sample particles are not dislodged from their weighing dish (5.2). NOTE For the use of vacuum drying oven, see EN 14774-3. 5.2 Weig

29、hing dish, of glass or corrosion resistant and temperature resistant material, with a well-fitting lid and of such a size that the sample layer does not exceed 0,2 g/cm2. 5.3 Balance, with a sufficient accuracy to weigh the sample to the nearest 0,1 mg. 5.4 Dessicator, to avoid absorption of moistur

30、e from the atmosphere to the sample. DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 5 6 Sample preparation The sample used for the determination shall be the general analysis test sample with a particle size 1 mm prepared in accordance with EN 15443. Before commencing the determination, mix the analysis

31、 sample preferably by mechanical means. 7 Procedure A minimum of two determinations shall be carried out on the test sample. Dry an empty weighing dish (5.2) with its lid at (105 2) C until constant mass is reached and allow it to cool to room temperature in the dessicator (5.4). NOTE 1 Several weig

32、hing dishes can be handled at the same time. Weigh the weighing dish (5.2) with its lid to the nearest 0,1 mg. Add minimum 1 g of the analysis sample into the weighing dish (5.2) in an even layer and weigh the weighing dish with its lid plus sample to the nearest 0,1 mg. Heat the uncovered weighing

33、dish (5.2) and its lid together with the sample at (105 2) C until constant mass is reached. Constancy in mass is defined as a change not exceeding 1 mg in mass during a further period of heating at (105 2) C over a period of 60 min. If the sample material is susceptible to oxidation at the given te

34、mperature, dry in nitrogen atmosphere or under vacuum conditions (see EN 14774-3 for vacuum conditions). Report the drying atmosphere. NOTE 2 The drying time required is usually between 2 h to 3 h. WARNING For some materials present in solid recovered fuels there can be a risk of self-ignition when

35、drying at 105 C. Replace the lid while the weighing dish (5.2) is still in the drying oven (5.1). Transfer the weighing dish and its contents to the dessicator (5.4). Allow it to cool to room temperature. Weigh the weighing dish (5.2) and its lid with the sample to the nearest 0,1 mg. Since small pa

36、rticle size recovered fuels are very hygroscopic, weigh rapidly once the sample is cooled. NOTE 3 Since recovered fuels in small particle size are very hygroscopic, their moisture content will vary with change of humidity of the atmosphere and therefore, the moisture of the analyses sample should al

37、ways be determined simultaneously when portions are weighed out for other analytical determinations, for example, calorific value, carbon, nitrogen. Automatic equipments may be used if the method is validated by parallel measurements. These automatic equipments shall fulfil all the requirements rega

38、rding sample size, heating procedure, temperature, atmosphere and weighing accuracy. Deviations from this paragraph shall be reported and justified. 8 Calculation For each determination, the moisture content, Mad, in the analysis sample, as analysed, expressed as mass fraction in percent, shall be c

39、alculated using Equation (1): 100)()(1232ad=mmmmM (1) DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 6 where m1is the mass of the empty weighing dish (5.2) plus lid, in grams; m2is the mass of the weighing dish (5.2) plus lid plus sample before drying, in grams; m3is the mass of the weighing dish (5.2)

40、plus lid plus sample after drying, in grams. The test result for each individual determination shall be calculated on analysed basis to two decimal places and for reporting purposes, the mean value of the individual test results shall be calculated and rounded to the nearest 0,1 %. 9 Precision 9.1 R

41、epeatability The maximum difference to be expected between two independent single test results of one laboratory at a confidence level of 95 % will not exceed the repeatability limit in more than 5 % of cases when measuring the same measurand in the same medium, using the same facilities and fulfill

42、ing all requirements of the test method (interlaboratory testing). Precision data derived from the interlaboratory test are given in Annex A. 9.2 Reproducibility The maximum difference to be expected between two independent single test results of different laboratories at a confidence level of 95 %

43、will not exceed the reproducibility limit in more than 5 % of cases when measuring the same measurand in the same medium, each laboratory using their own facilities and fulfilling all requirements of the test method (interlaboratory testing). Precision data derived from the interlaboratory test are

44、given in Annex A. 10 Test report The test report shall include at least the following information: a) identification of the laboratory and the testing date; b) identification of the product or sample tested; c) a reference to this document, i.e. EN 15414-3; d) any deviation from this document; e) dr

45、ying atmosphere used; f) test results on wet basis as specified in Clause 8; g) any unusual features observed during the test procedure which may have affected the test result. DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 7 Annex A (informative) Interlaboratory test results The statistic evaluation of

46、 the interlaboratory test results was carried out in accordance with ISO 5725-5. The precision data obtained are shown in Table A.1. Table A.1 Precision data Designation Shreddedtyre Demolition wood Dried sludge Municipal waste Plastic/paper fluff Number of laboratories participated 14 14 14 14 14 T

47、otal number of values (without outliers) 50 50 50 52 50 Mean value, in % mass fraction 2,48 11,79 2,13 5,96 6,49 Laboratory effect, in % mass fraction 0,11 0,43 0,45 0,18 Sample effect, in % mass fraction 0,47 0,14 0,16 0,25 Repeatability standard deviation, sr, in % mass fraction 0,19 0,29 0,08 0,1

48、4 0,14 Repeatability limit, r: (r = 2,8 sr) in % mass fraction 0,53 0,81 0,22 0,39 0,39 Reproducibility standard deviation, sRin % mass fraction 0,22 0,29 0,44 0,47 0,23 Reproducibility limit, R: (R = 2,8 sR) in % mass fraction 0,62 0,81 1,23 1,32 0,64 The deviations of the test results between the

49、individual laboratories for each sample type are shown in Figures A.1 a) to A.1 e). DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 8 a) Shredded tyre b) Demolition wood c) Dried sludge d) Municipal waste DIN EN 15414-3:2011-05 EN 15414-3:2011 (E) 9 e) Plastic and paper fluffs Key Madmass fraction of moisture in % N number of the individual laboratory Figure A.1 Deviations of the test results between the individual laboratories DIN EN 15414-3:2011-