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
| Standard | Scope | Status |
|---|---|---|
| NFPA 750 | Water mist system design, installation and maintenanceAll Mistelix systems are engineered to NFPA 750 requirements. | Conformant by design |
| NFPA 33 | Spray application using flammable or combustible materialsPaint booth systems designed to NFPA 33 with NFPA 750 protection. | Conformant by design |
| EN 14972 | Full-scale fire test protocols for water mist systems[PLACEHOLDER: test lab + target date] | Testing scheduled |
| DRDO-CFEES / TAC | Indian fire protection system approval[PLACEHOLDER: application stage] | In progress |
| FM 5560 | FM 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
| Application | Governing standards |
|---|---|
| Road & rail tunnels | NFPA 502, NFPA 750 |
| Paint booths | NFPA 33, NFPA 750 |
| Cable tunnels | NFPA 750, EN 14972 |
| Transformers | NFPA 750, FM 5560 |