Standards

Standards & Approvals

Water mist is a performance-based technology — a system is judged by full-scale fire testing against the specific risk it protects, not by a single blanket certificate. We publish exactly where Mistelix stands against every standard relevant to our applications, including what is still in progress.

Approvals ledger

StandardScopeStatus
NFPA 750Water mist system design, installation and maintenanceAll Mistelix systems are engineered to NFPA 750 requirements.Conformant by design
NFPA 33Spray application using flammable or combustible materialsPaint booth systems designed to NFPA 33 with NFPA 750 protection.Conformant by design
EN 14972Full-scale fire test protocols for water mist systems[PLACEHOLDER: test lab + target date]Testing scheduled
DRDO-CFEES / TACIndian fire protection system approval[PLACEHOLDER: application stage]In progress
FM 5560FM Approval standard for water mist systems[PLACEHOLDER: target year]Planned

Conformant by design vs certified

What “conformant by design” means

“Conformant by design” means our engineering follows the standard’s requirements in full — pressure, droplet size, zoning, activation logic and materials — but the system has not yet completed the standard’s independent third-party test protocol. “Certified” or “approved” means an accredited body has witnessed and passed that test. We state which is which for every standard above, and will update this page the moment a status changes.

NFPA 750

Water mist system design, installation and maintenance

NFPA 750 covers the full lifecycle of a water mist system — design basis, component selection, installation practice, acceptance testing, and ongoing maintenance — classified by operating pressure into low-, intermediate- and high-pressure systems.

EN 14972

Full-scale fire test protocol

EN 14972 defines application-specific full-scale fire test procedures for water mist systems across risk categories including machinery spaces, warehouses and other occupancies. Passing the relevant test category is the strongest form of evidence a water mist manufacturer can offer.

DRDO-CFEES / TAC

Indian fire protection system approval

The Centre for Fire, Explosive and Environment Safety (CFEES), under DRDO, and the Tariff Advisory Committee (TAC) framework are the principal Indian bodies evaluating fire protection system approval for domestic projects.

FM 5560

FM Approval standard for water mist systems

FM 5560 is FM Approvals’ standard for water mist systems, widely recognised by insurers and international project reviewers as evidence of tested performance.

By application

Compliance matrix

ApplicationGoverning standards
Road & rail tunnelsNFPA 502, NFPA 750
Paint boothsNFPA 33, NFPA 750
Cable tunnelsNFPA 750, EN 14972
TransformersNFPA 750, FM 5560