What is weepage in the context of gas turbine systems?

Weepage refers specifically to the minor droplet formation of fluids that occurs in gas turbine systems. This phenomenon often indicates a slight leak or seepage of fuel or oil that is not significant enough to create a large spill or drip, which would be characterized by more severe fluid discharge. In the context of gas turbines, weepage can be a critical observation, as it might signal potential issues with seals or connections that need to be monitored, even though it does not represent a major hazard at the moment.

The other options indicate more substantial problems. A visible sheen on a fitting, while it may suggest some form of leak, is not specifically classified as weepage. Fuel leaking in significant amounts and severe fluid discharge both describe more serious and troubling conditions than weepage would encompass. Therefore, recognizing weepage as minor droplet formation helps technicians understand the severity of fluid leaks and take appropriate maintenance actions.