  We frame beta-minus decay rate perturbations in the context of
charged-current (CC) nonstandard neutrino interactions (NSI). In particular, we
first outline one NSI parameterization for modeling the CC NSI. Then, we
demonstrate that the strength of the NSI constrained by beta-minus decay data
is comparable to previously reported bounds on general CC NSI at
$\mathcal{O}(10^{-4})$ to $\mathcal{O}(10^{-2})$. After discussing possible
parameters involved in beta-minus decay NSI, we establish a working framework
to probe potentially new physics in nuclear decay rates. Finally, we determine
that current nuclear reactor technology could be used for experiments that are
sensitive to these NSI parameters. These would include NSI contributions from
two types of parameters: (i) the relative NSI effects from the three neutrino
flavors and (ii) the change in flux of electron neutrinos through a decaying
sample.
