ISO INTERNATIONAL STANDARD 18135 First edition 2017-04 Solid Biofuels Sampling Biocarburants solides-Echantillonnage Reference number ISO 18135:2017(E) International Organization for Standardization See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02017 vided by IHS under I Not for Resale, 2017/5/16 00:37:15 No reproduction or networking permitted without license from IHS IS0 18135:2017(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either Iso at the address below or Iso's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZoISQ37 -All rights reserved d by IHS unde Not for Resale, 2017/5/16 00:37:15 IS0 18135:2017(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols. ...2 5 Principle 3 6 Establishing a sampling scheme (sampling plan) 6.1 Principle. ..4 6.2 Full sampling plan ..5 6.3 Brief sampling plan .5 6.4 Division of lots. ..5 7 Visual inspection ..6 8 Number of increments. ..6 8.1 General .6 8.2 Primary increment variance (V) .7 8.3 Preparation and testing variance (Vpr) ..8 8.4 Overall precision (PL) 8.5 Calculation of number of increments per (sub-) lot ..8 9 Calculation of the size of increment ..10 10 Combined sample - Calculation of the volume of the combined sample .10 11 Sampling equipment .11 11.1 General ..11 11.2 Equipment for manual sampling .11 11.2.1 Sampling box for falling-stream ..11 11.2.2 Scoops .12 11.2.3 Shovels. .13 11.2.4 Forks. .14 11.2.5 Grabs. .15 11.2.6 Probes (thieves) ..16 11.2.7 Pipes (spears) ..16 11.2.8 Frames ..17 11.2.9 Hooks. .17 11.2.10 Drills (augers) ..18 11.3 Equipment for mechanical sampling ..19 11.3.1 Use of coal sampling standards and checking for bias ..19 11.3.2 Falling-stream sampler 19 11.3.3 Cross-belt sampler. 20 11.3.4 Mechanical probes. .21 11.3.5 Mechanical drills. .21 12 Sampling in practice .21 12.1 General .21 12.2 Methods for sampling stationary material 22 12.2.1 Sampling from small packages (<50 kg) 22 12.2.2 Sampling from containers, lorries and wagons. 22 12.2.3 Sampling from stockpiles. 23 12.2.4 Sampling from ships and barges 24 12.2.5 Sampling from bales .. 25 12.3 Methods for sampling moving material .25 ntemaonalgnzatin7-All rights reserved ii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ted without license from IHS