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What happens if a safety valve does not close properly?

  1. It may cause a fire

  2. It can lead to overpressure in the boiler

  3. It will reduce the efficiency of the boiler

  4. It will impact fuel usage

The correct answer is: It can lead to overpressure in the boiler

When a safety valve does not close properly, it can lead to overpressure in the boiler. The safety valve is a critical component designed to open at a predetermined pressure to relieve excess pressure in the system. If the valve fails to close, steam or fluid continues to escape, preventing the pressure from stabilizing at safe levels. This overpressure situation can potentially lead to catastrophic failures, such as boiler explosions, equipment damage, or other safety hazards. Thus, maintaining the proper functioning of the safety valve is essential for safe boiler operation and preventing overpressure conditions. Considering the other options, while a pressure malfunction could indirectly affect fuel usage or efficiency, the primary and most immediate concern is the risk of overpressure, making this response the most relevant and accurate.