Which system is inspected during a post-operational inspection rather than during a preoperational inspection?

The coolant system is typically inspected during a post-operational inspection rather than a preoperational inspection because its condition is often most accurately assessed after the system has been in use. During operation, the coolant system experiences changes in temperature and pressure that can affect its integrity and performance.

Post-operational inspections are crucial for identifying any issues that may have arisen during operation, such as leaks, blockages, or deterioration of components, which may not be evident during preoperational checks. In contrast, preoperational inspections focus more on ensuring that systems are ready to operate safely and effectively before use, while post-operational inspections are about evaluating how well those systems performed during operation and identifying any necessary repairs or maintenance.

This distinction is important for maintaining overall system reliability and safety in electrical power production.