👉 The qualifying fluid, often abbreviated as QF, is a specialized liquid used in the operation of gas turbines and other high-efficiency power generation systems to ensure optimal performance and safety. It is typically a mixture of water, glycols, and sometimes other additives designed to maintain the fluid's properties under extreme temperatures and pressures. The QF helps in cooling the turbine blades and other critical components, preventing overheating and material degradation. It also acts as a lubricant and anti-corrosive agent, ensuring smooth operation and extending the lifespan of the equipment. During qualifying, the fluid's performance is rigorously tested to verify that it meets the necessary standards for efficiency, reliability, and safety before the system is fully commissioned.