What levels do the three sight glasses on the LOSCA indicate?

The sight glasses on the LOSCA (Lap Oil System Control Assembly) are crucial for monitoring the oil levels in the system. They typically indicate specific low-level and high-level thresholds that are important for safe and efficient operation.

The correct response indicates that the sight glasses show low level at 19 gallons, which is critical because if the oil level drops below this point, it can lead to inadequate lubrication and potential damage to the turbine. The high level is indicated at 24 gallons, which helps in ensuring that the system does not overflow, maintaining the proper oil capacity to facilitate optimal operation.

These levels are designed to alert operators to the status of the oil, allowing them to take necessary actions to maintain the proper functioning of the gas turbine. By knowing these thresholds, operators can prevent both oil starvation and overfilling, ensuring the longevity and reliability of the turbine system.