API-510 significantly impacts the operational efficiency of pressure vessels by establishing standards that help in the early detection of potential issues and scheduling maintenance based on actual vessel condition rather than on fixed intervals. This risk-based inspection (RBI) approach allows for the optimization of maintenance schedules, ensuring that resources are allocated effectively, and downtime is minimized. By implementing these standards, facilities can improve the reliability and availability of their pressure vessels, reduce unexpected failures, and extend the service life of their equipment. API-510's guidelines ensure that maintenance is proactive and aligned with the specific needs of each vessel, based on its operating conditions and history.