🔍 Key Concepts

• Duplex fuel oil strainer normal operating purpose and design • What happens to fuel supply and engine operation if you interrupt flow suddenly at sea • Relative safety of switching to a clean, online filter vs. cleaning, stopping pumps, or using a bypass

💭 Think About

• In a duplex strainer system, what feature allows you to deal with a clogged element without interrupting fuel flow? • Which option maintains fuel supply to the engine while you address the clog safely? • Which choice could send unfiltered fuel to the engine or risk a loss of power at sea?

✅ Before You Answer

• Identify which action keeps continuous fuel flow to the engine while addressing the problem • Avoid any step that introduces unfiltered fuel into the system if a safe alternative exists • Avoid any action that would unnecessarily stop the engine or risk loss of propulsion in open water