hazmat-segregation-table-49cfr-177-848

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.

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.