Which type of pressure vessel inspection focuses on identifying wear over time?

Periodic integrity assessment is the correct focus for identifying wear over time in pressure vessels. This inspection method involves regular evaluations of the vessel's condition to monitor and assess any degradation or changes that have occurred since the last assessment. These assessments are designed to ensure the structural integrity and safety of the vessel over its operational life.

The periodic nature of this type of assessment allows for the identification of trends in wear and potential failure mechanisms that can develop over time. By conducting these inspections at scheduled intervals, operators can take proactive steps to address issues before they lead to significant problems, thereby enhancing safety and extending the life of the equipment.

Other options, while relevant in various contexts, do not specifically target the long-term observation of wear. For example, visual inspection can identify surface defects but may not adequately reveal the extent of wear or internal degradation over time. Destructive testing involves taking samples to evaluate material properties but is not suitable for regular monitoring since it can damage the vessel. Operational qualification testing focuses on validating that a vessel operates correctly under prescribed conditions, rather than monitoring wear over time.