Which operator class has primary responsibility for operating and maintaining the UST system?

• A. A
• B. B
• C. C
• D. D

Answer: (A)

The Class A operator has primary responsibility for operating and maintaining the UST system. This role holds the overall accountability for how the system is run, including implementing operation procedures, scheduling and overseeing preventive maintenance, ensuring proper release detection, keeping required records, and making sure staff are trained and compliant with regulations. The idea is that this person sets the standards and oversees the entire system.

The other operator classes support different aspects of the daily work. The Class B operator handles day-to-day operation, monitoring, release detection, and timely corrective actions in response to findings. The Class C operator is on-site personnel who deal with immediate daily actions and emergency responses. But the primary accountability for operating and maintaining the system rests with the Class A operator.