When warming a propulsion turbine, how often should the turbine be rotated with steam?

Rotating a propulsion turbine while warming is crucial for ensuring uniform heating and preventing thermal stress and damage to the turbine components. The correct practice for warming a turbine involves rotating it with steam every 2 to 3 minutes. This interval allows the turbine to gradually expand and ensures that steam is evenly distributed across the turbine's surfaces, promoting an even temperature rise.

Frequent rotation within this time frame helps mitigate the risk of deformation or warping, which could occur if one part of the turbine heats significantly faster than another. By adhering to this procedure, operators can ensure the longevity and reliability of the turbine equipment as it transitions from a cold to a warm state, preparing it for optimal performance in propulsion applications.