FAA Powerplant Written Practice Test

Which types of cleaners are suitable for cleaning turbine engine parts?

1. Water-based cleaners or soap

2. Emulsion type cleaners or chlorinated solvents

3. Acid-based cleaners or alcohol

4. Abrasive cleaners or sand

The correct answer is: Emulsion type cleaners or chlorinated solvents

Emulsion type cleaners or chlorinated solvents are particularly suitable for cleaning turbine engine parts due to their effectiveness in removing oils, grease, and other residues that can accumulate on engine components. These cleaners are designed to break down and dissolve contaminants without causing damage to the engine materials, which is crucial in maintaining the integrity and performance of turbine engines. Emulsion cleaners, which combine water and oil, can help lift away grime while being safer for the machinery when used as directed. Chlorinated solvents, on the other hand, can cut through tough contaminants but must be used with caution due to their potential health risks and environmental impacts. Using these types of cleaners helps ensure that turbine engine parts remain clean and free of contaminants, which is essential for reliability and efficiency in operation. Cleaning agents not specifically designed for engine components, such as abrasive cleaners or sand, may cause surface damage or introduce foreign particles that can harm engine performance. Similarly, while water-based and acid-based cleaners have their applications, they may not be suitable for the unique requirements of turbine engine maintenance.