Question 155Gas Turbine - Assistant Engineer

The correct answer is C) Salt spray and lube oil mist. The two primary sources of deposits that build up on compressor blades are salt spray and lube oil mist. Salt spray can enter the engine from the surrounding marine environment, while lube oil mist is produced as part of the normal operation of the compressor. These two contaminants can accumulate on the compressor blades, reducing efficiency and potentially leading to performance issues. The other answer choices are incorrect because carbon residue (A) and dry particulate matter (D) are not the primary sources of deposits on compressor blades in a marine environment. Lube oil mist (B) is a correct source, but it is not the only primary source.