🔍 Key Concepts

• Piping diagrams and legends for the DEEP DRILLER salt‑water service system • Flow path from the Salt‑Water Service Pump discharge to tank 10S • How numbered valves are identified on the plan (location and line size)

💭 Think About

• Trace the flow line on the piping diagram starting at the Salt‑Water Service Pump discharge and follow it all the way to tank 10S. Which numbered valves are actually on that path? • Ask yourself: which valves must be open to let water reach 10S, and which valves would instead divert flow to a different tank or system? • Compare the valve numbers in the answer choices with the drawing: where is each valve physically located in the system, and what branch or component does it control?

✅ Before You Answer

• Confirm on the drawing which valve numbers are specifically labeled on the line going into tank 10S, not just near it. • Verify that the valve you pick is not on a bypass, cross‑connection, or different tank branch. • Double‑check the piping legend and valve symbols so you’re sure you’re looking at the correct valve number and not a nearby fitting or instrument.