ISO 17225-4:2021

Solid biofuels — Fuel specifications and classes — Part 4: Graded wood chips

Publication date: 19 shk 2021

General information

Current stage: 90.20 Effective date: 15 jan 2026

Originator: ISO

Owner: ISO/TC 238

Type: International Standard

ICS: 27.190 75.160.40

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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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):
1.1 Forest, plantation and other virgin wood;
1.2 By-products and residues from wood processing industry;
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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 17225-4:2014

NOW

PUBLISHED
ISO 17225-4:2021
90.20 Standard under periodical review
15 jan 2026

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