PRA stands for which term?

PRA stands for which term?

• A. Probabilistic Safety Assessment
• B. Probabilistic Risk Assessment
• C. Public Risk Assessment
• D. Planned Risk Assessment

Answer: (B)

PRA stands for Probabilistic Risk Assessment. It’s the method you use to quantify risk by combining how likely different initiating events are with how severe their consequences could be, to produce a numeric estimate of overall risk for a plant or system. In practice, PRA builds models like event trees and fault trees to map possible failure paths, calculates risk metrics such as core damage frequency, and uses that information to compare designs, guide safety improvements, and support risk-informed decisions. Probabilistic Safety Assessment is a term you’ll see in some contexts, but the standard expansion associated with PRA is Probabilistic Risk Assessment. Public or planned risk assessment aren’t the terms used for this nuclear safety practice.

PRA stands for Probabilistic Risk Assessment. It’s the method you use to quantify risk by combining how likely different initiating events are with how severe their consequences could be, to produce a numeric estimate of overall risk for a plant or system. In practice, PRA builds models like event trees and fault trees to map possible failure paths, calculates risk metrics such as core damage frequency, and uses that information to compare designs, guide safety improvements, and support risk-informed decisions. Probabilistic Safety Assessment is a term you’ll see in some contexts, but the standard expansion associated with PRA is Probabilistic Risk Assessment. Public or planned risk assessment aren’t the terms used for this nuclear safety practice.