1. A system comprising: a risk calculation system programmed to calculate a risk based on a static input and a dynamic input; and a decision support system programmed to use the risk to derive a decision; and a plant control system programmed to update operations of a plant based on the decision, to observe a plant system, and to store plant system observations as historical data, wherein the decision predicts future plant conditions, wherein the static input comprises a business environment data, wherein the dynamic input comprises a signal representative of an unexpected maintenance event, and wherein the plant control system is configured to analyze the signal representative of the unexpected maintenance event and the historical data to credit the unexpected maintenance event in lieu of performing an equipment test event related to the plant system.