How often should a gas turbine generator be water washed?

Water washing of a gas turbine generator is a critical maintenance procedure designed to remove deposits, contaminants, and debris from the compressor and improve its efficiency. The recommended frequency for conducting these washes depends on the operating conditions and the environment in which the gas turbine operates.

The frequency of water washing is generally guided by operational experience and manufacturer recommendations, which may indicate a standard ranging around every 200 hours of operation, plus or minus 20 hours. This approach ensures that the compressor remains clean and maintains optimal performance, which is crucial for the overall efficiency and longevity of the gas turbine system.

Regular washing facilitates better airflow through the compressor, reduces fuel consumption, and minimizes emissions by preventing the buildup of fouling agents that can impair performance. Therefore, the choice that aligns with this maintenance practice and provides a specific and reasonable guideline for the timing of water washing procedures is around 200 hours of operation, making this the correct selection in the context of gas turbine maintenance practices.