🔍 Key Concepts

• P-tank (pressure tank) operation sequence when discharging dry bulk cargo • Safety concerns when working with compressed air in closed systems • Correct order of steps: loading tank, connecting hoses, opening/closing air and cargo valves

💭 Think About

• Think about what could happen if compressed air is introduced to a closed tank before all discharge connections are properly made. • Consider when it is safest to have flexible discharge hoses attached: when the tank is pressurized, unpressurized, loaded, or empty? • Which step in the sequence reduces the risk of hose whipping, product blowout, or unintended discharge?

✅ Before You Answer

• Verify at what point compressed air should be admitted to a P-tank during normal discharge procedures. • Confirm that hoses should not be connected or disconnected while the system is under pressure. • Check the logical order: load cargo → connect discharge hoses → admit compressed air → start flow, and see which option best fits that safe sequence.