ISO 11601:2017

Overview

ISO 11601:2017 - Fire fighting - Wheeled fire extinguishers - Performance and construction specifies the principal requirements to ensure the safety, reliability and performance of wheeled fire extinguishers. The standard covers design, materials, manufacturing tests, performance verification and marking so that wheeled extinguishers perform predictably in operational and environmental conditions.

Key topics and technical requirements

ISO 11601:2017 addresses both performance and construction aspects. Major technical topics include:

• Types of wheeled fire extinguishers - classification by extinguishing agent and pressure system.
• Extinguishing media, propellants and fill densities - requirements for CO2, powders, foam concentrates and clean agents, including fill tolerances and nominal charges.
• Performance requirements:
  • Operating temperature ranges
  • Effective discharge time and bulk range of discharge
  • Resistance to temperature changes and retention of charge
  • Intermittent discharge testing
  • Resistance to external and internal corrosion
  • Durability and electrical conductivity of discharge
• Fire performance tests - suitability and testing for different fire classes (A, B, D as applicable).
• Construction requirements:
  • High- and low-pressure cylinder requirements; materials (welded low‑carbon steel, stainless steel, aluminium)
  • Minimum wall thickness, caps, valves, closures
  • Safety and anti‑overfill devices
  • Manufacturing and leakage tests
  • Requirements for plastics, hoses, siphon tubes, discharge assemblies and control valves
  • Pressure gauge specifications and testing (calibration, burst, overpressure, impulse)
  • Carriage and mobility requirements, hose retaining units
• Colour, marking and documentation - color coding, labels, operating and inspection instructions, recharging instructions, and required user/service manuals.
• Annexes - normative data for clean agents (FK-5-1-12, HCFC Blend B, HFC-227ea, HFC-236fa) and their physical properties.

Practical applications - who uses ISO 11601:2017

ISO 11601:2017 is essential for stakeholders involved with wheeled fire extinguishers:

• Manufacturers and designers - to design compliant, safe, and reliable wheeled extinguishers.
• Testing laboratories and certification bodies - to perform prescribed performance and construction tests.
• Fire safety engineers and specifiers - to select appropriate equipment for industrial, marine, aviation or large‑facility applications.
• Procurement, regulators and insurers - to verify compliance for procurement, regulatory approval and risk assessments.
• Service and maintenance organizations - to follow inspection, recharging and documentation requirements.

Adoption of ISO 11601:2017 supports product safety, regulatory compliance and consistent field performance of wheeled fire extinguishers.

Related standards

ISO 11601:2017 complements other international and national fire‑fighting equipment standards and test methods (including standards covering portable extinguishers, clean agents and material/test procedures). Consult relevant national regulations and additional ISO standards for integrated fire protection system design and certification.