Low Core Damage Frequency (CDF)
Accidents that cause damage to the nuclear core of a reactor are serious because they may result in damaged fuel or a core meltdown, which could result in large releases of radioactive materials. Core damage frequency (CDF) is a term used in probabilistic risk assessment to express the likelihood of an accident that would cause damage to a nuclear reactor core. The lower the CDF, the lower the chance that an accident will occur that would result in core damage and potential release of radioactivity.
NuScale has worked hard to achieve a reactor design that reduces core damage frequency: