Improving instrument air system performance

Instrument air systems support the front-line operating systems at nuclear power plants by providing high-quality air to instruments and controls. Since plants are designed so that this air is not needed for achieving safe shutdown, instrument air systems do not have to be safety-grade. From the standpoint of electricity production, however, it is vital that they be as reliable and economical as possible. EPRI is developing information and products to help utilities improve the performance of these complex systems. Three reference reports are already available, and a new computer-based system, the Instrument Air Diagnostic Advisor, is nearing completion. Intended to be both a training and a diagnostic tool, IADA can help plant personnel consider the full range of possible problems and corrective actions