The oil-fired auxiliary boiler on your river push boat experiences a safety shutdown requiring a reset of the flame safeguard control to restart the boiler once the safety shutdown condition has been corrected. Which of the following conditions would best account for this?
• Boiler safety interlocks on oil-fired auxiliary boilers • Difference between a condition that stops combustion immediately vs. one that affects steam/water control but may not trip the flame safeguard • What the flame safeguard control actually monitors (flame presence and fuel delivery)
• Which of these conditions directly affects the safe delivery of fuel and maintenance of flame in the furnace? • Which conditions are normally handled by pressure or level controls without necessarily requiring a full flame safeguard reset? • Think about which condition would most likely cause an immediate burner shutdown because continuing to fire under that condition is unsafe.
• Identify which options are related to water/steam side control vs. those related to fuel side and combustion safety. • Recall that the flame safeguard typically trips on loss of flame or safe fuel conditions, and requires manual reset before refiring. • Ask: after correcting this condition, would the operator normally need to manually reset the flame safeguard before restarting the burner?
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