1 Scope
This document determines the fuel quality classes and specifications of graded wood chips. This document covers only wood chips produced from the following raw materials (see ISO 17225‑1:2021, Table 1):
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• 1.1 Forest, plantation and other virgin wood;
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• 1.2 By-products and residues from wood processing industry;
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• 1.3.1 Chemically untreated used wood.
This document covers only wood chips, which are produced with sharp tools, and does not cover hog fuel, which is produced with blunt tools.