🔍 Key Concepts

• Spontaneous combustion occurs when a material generates enough internal heat (often from oxidation) to ignite without an external flame • Some organic cargoes can self-heat when stored in bulk with limited ventilation • Consider which listed materials are commonly regulated for fire risk in storage or transport

💭 Think About

• Which of these materials, when stored in a large pile or mass, might trap heat and allow internal temperatures to build up over time? • Think about what happens to certain cargoes like coal when they are damp and stored in bulk in ship’s holds or stockpiles. • Are all the materials listed equally known for self-heating and requiring special fire precautions under maritime or industrial safety guidance?

✅ Before You Answer

• Identify which material is specifically noted in maritime safety guidance as self-heating or prone to spontaneous combustion when carried in bulk. • Consider whether each cargo on the list would realistically be found in large bulk stowage on ships or in terminals. • Double-check if exam prep materials have highlighted any of these as requiring special ventilation and temperature monitoring.