ISO 21945-2020 固体生物燃料--小型应用的简化取样方法 Solid biofuels — Simplified sampling method for small scale applications

This document describes simplified methods for taking samples of solid biofuels in small scale
applications and storages including preparation of sampling plans and reports. The main focus is on
storages with a size of ≤100 t. This document is applicable to the following solid biofuels:
1) fine (up to about 10 mm nominal top size) and regularly-shaped particulate materials that can be
sampled using a scoop or pipe, e.g. sawdust, olive stones and wood pellets;
2) coarse or irregularly-shaped particulate materials (up to 200 mm nominal top size) that can be
sampled using a fork or shovel, e.g. wood chips, hog fuel and nut shells;
3) large pieces (above 200 mm nominal top size) which are picked manually (e.g. firewood and
briquettes).
This document can also be used for other solid biofuels not listed above if the procedures described in this document are applicable. This document specifies methods to be used, for example, when a sample is to be tested for moisture content, ash content, calorific value, bulk density, mechanical durability,
particle size distribution, ash melting behaviour and chemical composition.
Additionally, it describes a method for the reduction of sample size and defines requirements on
handling and storage of samples.
NOTE 1 If higher precision of analytical results is needed or when in doubt if this document is applicable ISO 18135 can be used. Using the number of increments given in this document the resulting precision for analytical results can be estimated with the formulas given in ISO 18135.
 NOTE 2 Pellets can generate CO and CO₂ off gasses by nature. If pellets are sampled, check for CO and CO2 and O₂ levels prior and during the sample taking process in a confined space like a container, silo or shed and have another person standby at the entrance.st edition 2020-02 Solid biofuels — Simplified sampling method for small scale applications Biocombustibles solides — Méthode d'échantillonnage simplifiée pour les applications à petite échelle Reference number ISO 21945:2020(E) ？ ISO 2020 ISO 21945:2020(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2020 All rights reserved. Unless otherwise specified, or req