Question 322Steam Plants - Assistant Engineer

The correct answer is D) one of the main burner assemblies. The illustration SG-0007 is likely a diagram of a boiler or furnace system, and the component labeled "F" is one of the main burner assemblies that provide the primary fuel source for the system. This is the correct answer based on the typical components found in such systems. The other answer choices are incorrect because they do not match the expected components in a boiler or furnace illustration. An Orsat apparatus, soot blower elements, and a regenerative air heater are not the primary fuel sources for the system depicted in the illustration.