🔍 Key Concepts

• Classes of fires and which agents are appropriate for each • Sequence of actions in an engine room machinery fire involving an electric motor and fuel oil • How to stop the source of energy driving the emergency

💭 Think About

• Ask yourself: What is the immediate danger here – the electricity, the fuel, or the ventilation – and which one can make the situation much worse if NOT dealt with first? • Think about what could happen if fuel keeps moving through the system while the motor is burning. How would that affect the fire? • Which action can be done instantly and remotely to reduce both ignition and escalation risk before you approach the equipment?

✅ Before You Answer

• Identify what powers the pump and how stopping that affects both ignition source and pump operation. • Consider which option would most directly and immediately reduce the chance of the fire spreading through piping or nearby spaces. • Verify which actions (fuel manifold, ventilation, water spray) might unintentionally spread flame, fuel, or smoke if taken before controlling the pump itself.