Which components are included in a typical safety injection system?

Which components are included in a typical safety injection system?

• A. HPSI pumps, accumulators, LPSI pumps, and injection lines
• B. Turbine, condenser, feedwater
• C. Control rods and diesel generators
• D. Ventilation system

Answer: (A)

The safety injection system is designed to deliver emergency coolant to the reactor core during a loss-of-coolant event, ensuring cooling even if other plant systems are unavailable. The typical components include high-pressure safety injection pumps that push coolant into the reactor when system pressure is high, accumulators that release borated water under nitrogen pressure for immediate injection, low-pressure safety injection pumps to continue cooling as pressure drops, and the injection lines that carry the coolant from these sources into the reactor coolant system. These parts work together to provide reliable cooling when it's most needed. The other options refer to parts of the main steam/turbine cycle or to shutdown power and support systems, not to the safety injection function, so they aren’t considered part of the safety injection system.

The safety injection system is designed to deliver emergency coolant to the reactor core during a loss-of-coolant event, ensuring cooling even if other plant systems are unavailable. The typical components include high-pressure safety injection pumps that push coolant into the reactor when system pressure is high, accumulators that release borated water under nitrogen pressure for immediate injection, low-pressure safety injection pumps to continue cooling as pressure drops, and the injection lines that carry the coolant from these sources into the reactor coolant system. These parts work together to provide reliable cooling when it's most needed.

The other options refer to parts of the main steam/turbine cycle or to shutdown power and support systems, not to the safety injection function, so they aren’t considered part of the safety injection system.