Hot streaking is a condition that causes what outcome?

• A. Localized overheating at a single burner
• B. Increases fuel efficiency
• C. Causes a flame to penetrate through the entire turbine system to the tailpipe
• D. No effect on performance

Answer: (C)

Hot streaking involves a localized region of higher flame temperature that arises from uneven combustion and fuel/air distribution. When this hot zone travels with the combustion gases into the turbine, it can persist and cause ignition or burning to extend along the flow path, potentially reaching the tailpipe. That downstream flame penetration is the scenario described, making it the best answer. It isn’t just a burner-side overheating issue, and it doesn’t improve efficiency; it creates excessive heat in the turbine and can lead to damage or abnormal operation.