🔍 Key Concepts

• How fuel flows from the fuel pump to the combustion liner in a marine gas turbine engine • The purpose of having more than one shutdown valve in the line • What happens to fuel flow if one shutdown valve closes or fails

💭 Think About

• Trace the fuel path on the diagram from the fuel supply to the fuel manifold and note how Shutdown Valve No. 1 and Shutdown Valve No. 2 are arranged relative to each other • Ask yourself: if one shutdown valve were to close, would fuel still be able to reach the combustion liner, or would it be completely stopped? • Consider why designers might want redundancy for emergency shutdown, and how the piping arrangement on the drawing achieves that

✅ Before You Answer

• Look carefully at whether the flow must pass through both shutdown valves in sequence, or whether the flow can go through either one • Verify if there is any branching of the fuel line around the shutdown valves that would allow an alternate path for fuel • Confirm which choices describe one-after-another alignment (in-line) versus side‑by‑side (branching) arrangements