Overview
ISO 20023:2018 - "Solid biofuels - Safety of solid biofuel pellets - Safe handling and storage of wood pellets in residential and other small-scale applications" provides principles and requirements for safe transport, delivery, handling and storage of wood pellets used in residential and small-scale settings. The standard addresses the full small-scale supply chain (loading, delivery trucks, connections to end‑user stores and filling), plus the design and construction of pellet storage systems. It covers hazards such as fire, dust explosion, off‑gassing, oxygen depletion, pellet swelling and other health risks. ISO 20023:2018 applies to wood pellets specified in ISO 17225‑2 and is intended mainly for facilities with storage capacities up to 100 t.
Key Topics and Requirements
- Transport and delivery: requirements for bulk delivery (including blower trucks), tipping into troughs/bunkers, big bag and bagged deliveries; safe connection and filling procedures.
- Bulk storage systems: location, construction, moisture protection, measures to reduce fines, prevention of dust movement, ventilation, electrical and extraction requirements, and fire/explosion protection.
- Design and installation: guidance for individual custom-made stores, pre‑fabricated systems, impact protection, sloping floors and access hatches.
- Health protection: safe entry procedures, requirements for small stores (up to 15 t) and larger/underground stores, and the role of stationary CO monitors and equipment used inside stores.
- Hazard assessment and documentation: informative and normative annexes provide hazard descriptions, model ventilation calculations, example store designs, a required hand‑over document template and filling checklists.
Practical Applications
Who uses ISO 20023:2018?
- Homeowners and installers managing residential pellet stores and heating systems.
- Pellet delivery companies and logistics providers ensuring safe bulk or bagged deliveries.
- Manufacturers and suppliers of pre‑fabricated pellet stores and storage accessories.
- Safety assessors, insurers and regulators evaluating risks for small‑scale pellet installations.
- Facility owners operating multiple small stores or >15 t stores who need guidance on ventilation, off‑gassing and fire/explosion prevention.
Benefits: improved safety and reduced risk of fire, explosion and health incidents; clearer installation and delivery requirements; better insurance and regulatory compliance.
Related Standards
- ISO 17225‑2 - Fuel specifications and classes (wood pellets)
- ISO 16559 - Solid biofuels terminology
- IEC 60529 - Degrees of protection (IP Code)
- EN 13237 - Terms and definitions for potentially explosive atmospheres
For implementation or certification guidance, consult your national standards body or ISO.