| name | dot-cargo-tank-specifications-406-407-412 |
| description | Use when identifying or specifying cargo tanks. Covers DOT-406 (petroleum), DOT-407 (chemical), DOT-412 (corrosive), MC-330/331 (gas), and the qualification cycle.
|
Dot Cargo Tank Specifications 406 407 412
Cargo tank specifications are heavily codified. Each tank built to a DOT specification with mandatory features + inspection cycle.
Common specifications
- DOT-406: Petroleum + flammable liquids (gasoline, diesel)
- DOT-407: Chemical materials (toluene, xylene, food-grade)
- DOT-412: Corrosive materials (acids, bases)
- MC-330/MC-331: Liquefied gases (LPG, propane)
- MC-338: Cryogenic gases
Mandatory features
Specifications dictate: tank thickness, material (steel/aluminum/stainless), pressure rating, overpressure relief, emergency shutoff valves, accident-damage protection.
Inspection cycle
- Annual visual external inspection
- 1-5 year hydrostatic test (per spec)
- Initial certification when built
- Re-certification at intervals
Common findings
Lapsed hydrostatic test. Damaged tank not properly repaired/re-certified. Wrong tank for material (DOT-407 for corrosive vs DOT-412).
Where this fits in X3 Compass
Applied in the X3 Compass Hazmat Center add-on.
