Ventilation System Design for Self-Bunded Fuel Tanks
1. Pressure Equalization
Technical Specification
Calibrated vents activate at 0.5-2 psi thresholds for vapor release/air intake
2. Vapor Control Systems
- EPA Quad O (US)
- EU Solvent Emissions Directive
Activated Carbon Filters
Catalytic Converters
Function
Traps or oxidizes vapors before atmospheric release
3. Contamination Protection
- Weatherproof covers
- Flame arrestors (mesh/perforated plates)
Safety Mechanism
Flame arrestors cool and extinguish sparks entering/exiting the system
4. Airflow Configuration
- Tank size
- Usage patterns
Design Consideration
Ventilation path must avoid contact with outer bund effluent
5. Compliance & Durability
- UL 142 (North America)
- EN 12285-1 (Europe)