| name | hazmat-segregation-table-49cfr-177-848 |
| description | Use when loading multiple hazmat materials in the same vehicle. Covers segregation rules between incompatible classes, the segregation table, and the safe-stack rules.
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Hazmat Segregation Table 49Cfr 177 848
Some hazmat classes can't be loaded together — chemical reactions, fire amplification, contamination risk. Segregation table at 49 CFR 177.848 is the lookup.
Table structure
Cross-tabulated. Rows = primary hazard class. Columns = other primary hazard classes. Cells contain X (don't load together), O (other restrictions apply), or blank (no segregation needed).
Common incompatibles
Class 1 (explosives) + Class 5.1 (oxidizers) = X. Class 3 (flammable liquids) + Class 5.1 (oxidizers) = X. Class 4.3 (dangerous when wet) + Class 8 (corrosive, often water-containing) = check carefully. Class 6.1 (toxic) + food-grade = X.
Subsidiary hazards count
Material with primary + subsidiary class is checked against BOTH for segregation.
Distance / separation
When 'X' isn't allowed: physically separate in different compartments/vehicles. When 'O': separate by distance (typically 6 feet) and barriers.
Mixed loads with non-hazmat
Hazmat must be separated from non-hazmat in many cases. Especially food, animal feed (Class 6.1 X with food/feed).
Documentation
Loading plan documented if requested by inspector. Shipping papers identify each material's class so segregation can be verified.
Common violations
Class 3 + Class 5.1 on same trailer without barrier. Class 6.1 toxic next to food. Unrelated hazmat classes loaded without segregation plan.
Where this fits in X3 Compass
Applied in the X3 Compass Hazmat Center — the vertical add-on for hazmat-hauling motor carriers.
