What is the minimum relieving capacity for power actuated relieving valves?

The minimum relieving capacity for power actuated relieving valves is indeed set at no less than 10% of the maximum allowable working pressure (MAWP). This standard ensures that the relief system can effectively handle potential overpressure scenarios in a safe manner.

By establishing this minimum capacity, it provides a safeguard to prevent pressure from reaching dangerous levels, which could lead to equipment failure or even catastrophic incidents. The 10% threshold is based on established engineering practices and safety regulations, ensuring that there is adequate relief for variations in pressure during operation.

Furthermore, the factors considered for this standard are the common scenarios encountered in power systems and the necessity for a reliable safety margin in case of sudden pressure increases. This emphasis on a minimum capacity helps maintain operational integrity and safety in energy production systems.