Overview
EN 27201-1:1994 (aligned with ISO 7201-1:1989) specifies requirements and test methods for halogenated hydrocarbon fire‑extinguishing media Halon 1211 and Halon 1301. The standard defines sampling, testing and quality‑assurance criteria to confirm that these media meet minimum performance and safety characteristics for sale and distribution as extinguishing agents. It is important to note that the standard does not cover conditions of use in fire‑fighting equipment.
Key Topics
- Scope: Applies to halon 1211 (bromochlorodifluoromethane) and halon 1301 (bromotrifluoromethane); excludes operational use conditions in extinguishing systems.
- Sampling: Requires liquid‑phase samples to be taken from the manufacturer’s shipping container using the method in ISO 3427; sampling containers must safely resist vapour pressure.
- Quality characteristics: Specifies required checks for purity, acidity, water content, non‑volatile residue, halogen ion presence, and suspended matter or sediment.
- Test methods: Recommends accepted laboratory techniques such as gas‑liquid chromatography for purity, the Karl Fischer method for water content, and referenced ISO test methods (e.g., ISO 3363, ISO 5789) for other determinations.
- Packaging and labelling: Requires containers that are compatible with halons and compliant with national regulations where applicable. Labels must include supplier name/address, product identification (Halon 1211 or Halon 1301), the standard reference (ISO 7201-1 / EN 27201-1), package ID and recommended storage precautions.
- Informative annex: Provides general physical properties and notes on electrical conductivity and other practical considerations; the ability to extinguish fires involving live electrical equipment depends on circumstances and discharge method.
Applications
- Quality control and release testing by manufacturers and chemical laboratories to confirm conformity before dispatch.
- Procurement and compliance checks by distributors, storage facilities and regulators to ensure safe handling, labelling and transportation.
- Reference for organizations updating or drafting equipment‑specific standards that will govern the use and installation of extinguishing systems employing halons.
Related Standards
- ISO 7201-1:1989 (original international text)
- ISO 3427 - sampling of gaseous halogenated hydrocarbons
- ISO 3363 - determination of acidity for fluorochlorinated hydrocarbons
- ISO 5789 - determination of non‑volatile residue
This document is a practical reference for stakeholders involved in testing, shipping and quality assurance of halon fire‑extinguishing media. For operational use and equipment requirements, consult equipment‑specific standards and national regulations.