🔍 Key Concepts
• Types of cargo damage and how they occur during loading, discharge, and stowage
• Difference between chemical changes inside the cargo (like rusting or spoiling) and foreign matter getting into the cargo
• How dust from other cargoes, the pier, or the atmosphere can affect clean or sensitive cargo
💭 Think About
• Ask yourself: is dust something that changes the substance of the cargo itself, or is it something that gets mixed into or onto it from outside?
• Think about food-grade or ‘clean’ cargoes like sugar, flour, or grain. What do we call it when they are spoiled by small amounts of another substance getting into them?
• Which option best describes foreign material being introduced to an otherwise sound cargo, without necessarily changing its chemical structure?
✅ Before You Answer
• Check which term refers to outside material getting into or onto the cargo rather than a reaction within the cargo itself.
• Eliminate any choice that clearly involves heat or a phase change (solid to gas, etc.), since that does not match how dust acts.
• Verify that your chosen term is commonly used in cargo handling to describe clean cargo being spoiled by unwanted foreign matter like dust, dirt, or residues.