The Williamson-Merritt taxonomy is a set of distinctions and methodology of describing configuration management in the context of a nuclear power plant. In its essence, the Williamson-Merritt taxonomy describes a methodology of making sure that the as-built configuration of the nuclear facility is consistent with the original promises made to the regulators, the public, and the owner-operator.

For more information on the Williamson-Merritt taxonomy, see the taxonomy overview.