🔍 Key Concepts

• Emergency pump controls on tank vessels and their purpose during cargo transfer operations • Location and function of the main deck manifold on a tank vessel • How emergency shutdowns are intended to stop or control the flow of oil in an emergency

💭 Think About

• Ask yourself: In an emergency, where is the most effective place on a tank vessel to stop the flow of oil being transferred between ship and shore? • Consider what the pump is actually doing: if you shut down the emergency pump control, what part of the transfer system stops moving oil? • Think about whether the emergency shutdown is designed to control conditions at the shore facility, inside the pump only, or at the ship’s cargo connection point.

✅ Before You Answer

• Identify which component of the cargo system is directly controlled by the emergency pump shutdown (pump, manifold valve, or shore equipment). • Verify the primary goal of an emergency shutdown on a tank vessel: limit pollution by quickly stopping the transfer at the ship/shore interface. • Confirm whether the shutdown device can realistically control anything outside the vessel (such as shore-side facility equipment).