Overview
EN ISO 22580:2021 (ISO 22580:2020) specifies requirements for the design, manufacture, installation and operation of flares for the combustion of biogas. The standard covers test methods and performance requirements and applies to biogas systems used across industries - for example, food & beverage plants, wastewater treatment works, waste and landfill sites, agricultural and small-scale/household plants. The primary aims are to ensure safe flare systems, prevent hazardous atmospheres, and reduce methane emissions from biogas streams.
Key topics and technical requirements
EN ISO 22580:2021 addresses both engineering and operational aspects of biogas flares. Major technical topics include:
- Classifications of flares (e.g., open vs enclosed flares) and related definitions.
- Design and construction principles covering flare efficiency, system pressure, air supply and gas flow management.
- Pilot burner design, ignition systems and flame monitoring devices for reliable ignition and flame detection.
- Materials and flame arresters to manage corrosive or hazardous gas constituents and prevent flashback.
- Control systems including burner control units, safety valves, flow measurement and gas analysis requirements.
- Auxiliary systems such as condensate removal, insulation/heating, heat protection, buildings/cabinets, lightning protection and earthing.
- Strength, stability and siting considerations, including recommended distances to other objects.
- Operations, testing and maintenance: requirements for operation and maintenance manuals, commissioning and performance testing, routine inspection and upkeep.
The standard cross-references several normative documents for safety and control device requirements (see Related Standards).
Practical applications and users
EN ISO 22580 is practical for organizations involved in the lifecycle of biogas flare systems:
- Designers and manufacturers specifying and building flares compliant with recognized safety and performance criteria.
- Plant owners and operators at wastewater treatment plants, biogas/landfill sites, food & beverage facilities, farms and small-scale installations who need safe, auditable flare operation and maintenance regimes.
- Installers and commissioning teams responsible for safe installation, testing and handover.
- Regulators, consultants and auditors using the standard to develop permitting conditions, methane mitigation programs or procurement specifications.
- Testing laboratories performing performance and safety tests referenced by the standard.
Related standards
Relevant referenced documents include (among others):
Using EN ISO 22580 helps organizations improve safety, reduce odor and greenhouse gas emissions, and align with regional regulations for biogas flare systems.
