🔍 Key Concepts

• 46 CFR requirements for periodic tests and inspections of propulsion and machinery systems • Purpose of remote controls for machinery in a casualty (fire, flooding, machinery space emergency) • Which remote function is most critical for protecting personnel and isolating fuel/air sources in a machinery space

💭 Think About

• In an engine room fire or other machinery space emergency, which single remote function would you absolutely need to work from outside the space to control these systems? • Think about the difference between controlling how fast equipment runs, starting it, monitoring it, and stopping it. Which one directly limits fuel or air supply to a fire? • For periodic inspections, inspectors focus on functions that, if they failed, would most directly endanger the vessel and crew. Which listed function best fits that role for these particular pieces of equipment?

✅ Before You Answer

• Verify in 46 CFR that the test is about functional operation from a remote station, not just local control. • Check which of the listed functions is common to all three: boiler draft fans, fuel oil pumps, and ventilation fans. • Confirm which function is explicitly used as an emergency protective measure in case of fire in the machinery space.