Abstract Preview

This document determines the fuel quality classes and specifications of graded hog fuel and wood chips for industrial use. It covers only hog fuel and wood chips produced from the following raw materials (see ISO 17225-1, Table 1):

—    1.1 Forest, plantation and other virgin wood;

—    1.2 By-products and residues from wood processing industry;

—    1.3 Used wood;

—    1.4 Blends and mixtures.

This document covers hog fuel that has pieces of varying size and shape, produced by crushing with blunt tools such as rollers, hammers, or flails, and wood chips which are defined as chipped woody biomass with a sub-rectangular shape and a typical length of 5 mm to 50 mm typically in the form of pieces with a defined particle size produced by mechanical treatment with sharp tools such as knives.

See 1.1.2 in ISO 17225-1, Table 1 for by-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated), are not allowed to contain halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values or higher than typical values of the country of origin (see Annex B in ISO 17225-1).

NOTE       If 1.4 Blends and mixtures includes 1.3.2 Chemically treated used wood, it can be only used in the installations permitted to use 1.3.2.


General information

  • Status :  Published
    Publication date : 2021-07
  • Edition : 1
    Number of pages : 8
  • :
    ISO/TC 238
    Solid biofuels
  • 27.190
    Biological sources and alternative sources of energy
    75.160.40
    Biofuels

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal:

Buy this standard

Format Language
PDF + ePub
Paper
  • CHF58

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.