Cargo Heat - Spontaneous Combustion
Self-heating hazard classification for bulk cargoes (coal, DRI, sulphide) - temperature trend and gas composition.
Risk
Moderate - 4-hr monitoring
Formula, assumptions, and limits
Coal + DRI + sulphides oxidise exothermically. Rising CO indicates continuing oxidation even when surface cools. Discharge plan: starve O₂ → no ventilation.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Temperature rise rate | °C/day | RTDs | |
| Carbon monoxide | ppm | gas analyser |