How many borescope ports on the LM2500 allow for the inspection of the combustor and fuel nozzles?

The LM2500 gas turbine has a design that incorporates multiple borescope ports specifically for the purpose of inspecting critical internal components, including the combustor and fuel nozzles. The correct answer identifies that there are six borescope ports available for this inspection.

These ports allow technicians to perform visual inspections of the combustor and fuel nozzle areas without the need to disassemble the turbine, which is essential for maintenance and operational assessments. The ports are strategically placed to provide optimal access for inspecting various components and ensuring that any potential issues can be identified early, thereby enhancing reliability and performance.

This design feature reflects the importance of maintaining gas turbine systems, as it facilitates preventive maintenance and reduces downtime. Access through these ports is crucial for identifying wear, fouling, or damage that could negatively impact turbine efficiency and longevity.