Calculation of technical and economic indicators (TEI) is part of the information tasks of the upper-level control system of the NPP instrumentation and control system (I&C system). The TEI characterize the efficiency, reliability, and durability of the power unit equipment during its operation. Based on the automation of the TEI determination, objective information can be obtained about the efficiency of technological processes, the actual state of power equipment, as well as the risk potential of the ongoing processes.