🔍 Key Concepts

• Special hazards in machinery spaces for diesel-electric propulsion (motors and generators) • Suitability of different extinguishing agents around live electrical equipment • Differences between local application systems and general space protection (e.g., sprinklers, steam, foam, CO₂)

💭 Think About

• Which extinguishing media are safe and effective on high‑voltage electrical equipment without causing additional damage or electrical hazards? • Think about what type of system is typically used in enclosed machinery spaces where rapid knock‑down and total flooding may be needed. • Which options are more appropriate for flammable liquid pool fires versus electrical equipment fires?

✅ Before You Answer

• Eliminate any agents that are conductive or water-based, since they are generally unsuitable for energized electrical equipment. • Consider which systems are typically installed as a fixed total-flooding system in machinery/engine rooms on larger vessels. • Ask: Which option is commonly referenced in marine fire protection for generator and motor rooms as primary fixed protection, not just portable backup?