🔍 Key Concepts

• Boiler mountings vs. boiler accessories – how the regulations distinguish parts that are directly attached to the boiler for safety and control, versus auxiliary equipment in the system • Purpose of safety-related fittings on a boiler: water level control, pressure control, and safe isolation from the rest of the system • 46 CFR engineering plant terminology for feed systems, blowoff systems, and drains

💭 Think About

• Ask yourself: which item must be directly fitted on the boiler itself to protect the boiler and control its operation, rather than just help the overall steam system? • Consider which of these items is associated with safely isolating or protecting the boiler contents (water/steam) from the rest of the system under pressure. • For each choice, picture where it is installed in a typical marine boiler system: on the boiler drum, in the uptakes, or out in the piping system?

✅ Before You Answer

• Verify which option is typically listed under boiler mountings (like safety valves, feed check arrangements, gauge glasses) in your engineering text or 46 CFR definitions. • Check whether the component is required for boiler safety and direct control or is just a cleaning/auxiliary device. • Confirm whether the valve or device must be connected directly to the boiler shell/drum as opposed to being located on external lines.