Titanium, magnesium and zirconium powders feed aerospace and defense production at TUSAS, Roketsan and TEI (3D printing, CNC milling). Ti dust ignites at 250 C and explodes with water. NFPA 484 combustible metals mandates a 100 kg NET storage limit, Class D extinguishing agent and dust-explosion protection.
Metal Dust Risk
- Ti: MIE 10 mJ, ignition 250 C
- Mg: MIE 20 mJ, ignition 473 C
- Zr: MIE 5 mJ very sensitive
- Al: MIE 50 mJ Kst 415
- Kst: Class St3 >300 bar m/s
NFPA 484 Limits
- Storage limit: 100 kg NET per room
- Bench limit: 5 kg open
- Separation: 2 h firewall
- Static: Grounding, bonded
- Dust collector: Wet type
Class D Extinguishing
- Met-L-X: NaCl-based
- G-Plus: Graphite
- Lith-X: For lithium
- Sand: Dry pipe
- Water forbidden: H2 explosion
Wet Dust Collector
- Type: Water-wash scrubber
- Reason: Dry filter explodes
- Emergency: Spark -> isolation damper
- Separation: 7.5 m outside
- Sludge: H2 evolution monitor
Turkey Sector
- TUSAS: Component production
- TEI: Engine parts
- Roketsan: Mg alloy
- 2017 TUI Imperial: Ti fire FR
- 3D metal printing: EOS SLM
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