DANSK DSF/PREN ISO 21945 PDF

This International Standard describes simplified methods for taking samples of solid biofuels in small scale applications and stores including preparation of sampling plans and certificates. Usually the focus is on stores with a size of 100 t. The standard is applicable to the following solid biofuels: - 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; - 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; - large pieces (above 200 mm nominal top size) which are picked manually (e.g. firewood and briquettes); It may be possible to use this standard on other solid biofuels. The methods described in this International Standard may 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. This International Standard can be used also for applications and stores > 100 t if the involved parties, e.g. provider and consumer of a biofuel, agree with. For sampling in general, if higher precision of analytical results are needed or in doubt if this standard is applicable ISO 18135 should be used.