Thailand Moves to Mandate TIS 332-2567 for Dry-Chemical Portable Fire Extinguishers

Bangkok — October 2025. Thailand has notified a draft ministerial regulation requiring all dry-chemical portable fire extinguishers—new and refilled—to conform to Thai Industrial Standard (TIS) 332-2567 (2024). The filing, made by the Thai Industrial Standards Institute (TISI), Ministry of Industry, identifies coverage of portable extinguishers (ICS 13.200.20) with a total mass not exceeding 25 kg that are suitable for Class A, B, and C fires. The WTO notification specifies adoption to be determined and entry into force after 180 days from Gazette publication.

Scope and Technical Backbone

Product scope

TIS 332-2567 applies to new portable units and recognizes two configurations: gas-cartridge type and stored-pressure type. Charge size must be ≥ 1 kg and < 14 kg as labeled.

Performance & discharge

Units must meet discharge-duration thresholds per size and achieve prescribed discharge efficiency; fire-rating tests reference ANSI/UL 711 for Classes A/B/C.

Pressure integrity & construction

Cylinders and joints must withstand at least 2× working pressure (not less than 2.4 MPa) without leakage or deformation; additional hydrostatic and durability tests are detailed, including impact-aging, conditioning, and intermittent discharge sequences.

Materials, coating, safety devices

Internal lacquer or equivalent is required to resist corrosion; external coatings must provide suitable anti-corrosion protection. Safety devices and selected component tests incorporate ANSI/UL 299 methods; user manuals follow TIS 405.