Which task is typical of Design Engineers using PRA?

Which task is typical of Design Engineers using PRA?

• A. Providing input for plant testing
• B. On-line operator training
• C. Replacing an AOV with an MOV
• D. Using MSPI for ongoing operations

Answer: (C)

Probabilistic Risk Assessment helps engineers see where the plant’s risk is coming from and what design changes can most effectively reduce that risk. Upgrading components to improve reliability and inspectability is a typical design-engineering response to PRA findings, so replacing an air-operated valve with a motor-operated valve fits that pattern. MOVs generally offer better operability, more consistent performance under demand, and clearer diagnostics, which PRA uses to lower the chance of unsafe or unsuccessful actuation. The other tasks are more about testing, training, or operating activities rather than making risk‑informed design changes: input for plant testing is part of validation activities, operator training is about education, and using MSPI for ongoing operations is an operational performance metric rather than a design modification driven by PRA.

Probabilistic Risk Assessment helps engineers see where the plant’s risk is coming from and what design changes can most effectively reduce that risk. Upgrading components to improve reliability and inspectability is a typical design-engineering response to PRA findings, so replacing an air-operated valve with a motor-operated valve fits that pattern. MOVs generally offer better operability, more consistent performance under demand, and clearer diagnostics, which PRA uses to lower the chance of unsafe or unsuccessful actuation.

The other tasks are more about testing, training, or operating activities rather than making risk‑informed design changes: input for plant testing is part of validation activities, operator training is about education, and using MSPI for ongoing operations is an operational performance metric rather than a design modification driven by PRA.