🔍 Key Concepts

• Spray attemperator function and where it is installed in a steam system • Difference between internal feed pipe and dry pipe inside a boiler drum • Purpose of a thermal sleeve or internal sleeve when hot fluid enters a thicker shell

💭 Think About

• Look at the direction of flow and where mixing or discharge takes place: is the fluid being distributed along a drum, or simply passing straight through? • Consider why there is an inner pipe inside an outer shell: is it to separate steam and water, or to protect the shell from temperature shock? • Ask yourself which of the choices would most likely need a long internal sleeve with arrows showing flow along the outside of the inner pipe before exiting

✅ Before You Answer

• Identify whether the component is located at a boiler drum connection or in a steam line between inlet and outlet flanges • Check if there are any features that look like spray nozzles or injection points versus simple open-ended pipes • Confirm whether the arrows show distribution along the length (typical of internal feed/dry pipes) or mixing and protection from rapid heating (typical of an attemperator with thermal sleeve)