PA Fan Stalling During Parallel Operation | Real Plant Case Study & Recovery | Thermal Power Plant

PA FAN STALLING & RECOVERY | REAL PLANT CASE STUDY What happens when a PA Fan enters a stall condition during parallel operation? 🤔 In this video, I am sharing a real thermal power plant experience where PA Fan-B entered into a stall condition while operating in parallel with PA Fan-A on a common PA header. We will understand: ✅ What is PA Fan Stalling? ✅ Why can a fan stall during parallel operation? ✅ Symptoms of PA Fan Stall ✅ Vibration behaviour during stalling ✅ Fan current imbalance ✅ Common PA header pressure behaviour ✅ Why one fan may run but contribute very little flow ✅ Step-by-step recovery from stall ✅ How to balance both PA Fans after recovery 🚨 REAL CASE DISCUSSED During parallel operation of two PA Fans: Both fans were operating around similar blade pitch PA Fan-A was carrying higher load PA Fan-B suddenly entered a stall condition PA Fan-B current dropped PA Fan-A current increased sharply PA header pressure behaviour changed PA Fan-B vibration increased significantly Then we successfully recovered the stalled fan by carefully adjusting the operating condition of both PA Fans. 🔥 Recovery sequence discussed: 1️⃣ Reduce PA Fan-B blade pitch 2️⃣ Reduce PA Fan-A blade pitch gradually 3️⃣ Reduce common PA header pressure 4️⃣ Bring PA Fan-B out of stall 5️⃣ Confirm vibration returns to normal 6️⃣ Gradually increase PA Fan-B contribution 7️⃣ Slowly balance both PA Fans ⚠️ Note: Actual operating procedures, control logic, fan characteristics and limits may vary from plant to plant. Always follow your plant's approved SOPs, operating procedures and protection philosophy. 🏭 ABOUT TeamOsAcademy TeamOsAcademy (TOA) focuses on connecting: 📚 Engineering Fundamentals 🧮 Competitive Exam Concepts 🏭 Real Thermal Power Plant Operation 🚨 Actual Plant Case Studies Our goal is simple: Understand the Concept → Understand the Plant → Understand the Operation Music:Alone Musician:Mike #PAFan #PAFanStalling #PAFanRecovery #ThermalPowerPlant #PowerPlantOperation