LOCA stands for which of the following?

• A. Loss of coolant accident
• B. Leak of containment air
• C. Liner of core assembly
• D. Level of corrosion assessment

Answer: (A)

LOCA refers to a Loss of Coolant Accident—the event where the reactor coolant is lost from the reactor coolant system due to a breach or rupture. The reactor relies on this coolant to remove heat from the fuel; when it is lost, the fuel can overheat if cooling isn’t restored quickly enough. That’s why safety systems are designed to detect a loss of coolant, scram the reactor, and rapidly inject water through emergency core cooling systems to keep fuel temperatures within safe limits and to preserve containment integrity. The other terms don’t describe this scenario: a leak of containment air isn’t about losing reactor coolant, and the phrases “liner of core assembly” or “level of corrosion assessment” refer to non-safety-event concepts related to components or measurements, not an accident involving coolant loss.