🔍 Key Concepts

• Proper sequence for warming up a fuel oil service system • Purpose and operation of steam fuel oil heaters • Relationship between fuel temperature, viscosity, and pump/valve operation

💭 Think About

• Think about whether you want hot, thin fuel or cold, thick fuel when you first start circulating through the system. • Consider what could happen to the fuel oil service pump or heater if steam is applied too early with no flow of fuel oil. • Ask yourself at what point in the sequence you normally establish circulation and then bring the temperature up gradually.

✅ Before You Answer

• Verify which step in the start-up sequence ensures safe circulation of fuel before high heat is applied. • Check which component (pump, heaters, recirculating valve) should be in operation to avoid overheating or coking of stagnant oil in the heater. • Confirm standard practice for avoiding thermal shock and ensuring stable viscosity before cutting fuel to the burners.