🔍 Key Concepts

• P-tanks (pressure tanks) on tank vessels and how they are normally loaded • Difference between pressurized filling and gravity filling systems • Typical function of discharge lines vs. fill lines vs. hatches/manways on cargo tanks

💭 Think About

• Which method of loading would best protect the tank’s structure and cargo system: forcing product in under pressure through cargo lines, or allowing it to enter without pump pressure? • Look at each option and ask yourself: is this component normally designed for loading, discharging, or access/inspection? • Consider safety: which method reduces the chance of over‑pressurizing a P‑tank during loading?

✅ Before You Answer

• Verify what the "P" in P‑tank refers to and whether that affects how it is filled • Confirm the primary purpose of the discharge line on a tank vessel (loading vs. unloading) • Check whether hatches/manways are normally used for routine cargo loading on pressurized tanks or mainly for entry/inspection