On-line Testing of Calibration of Process Instrumentation Channels in Nuclear Power Plants: Phase II Final Report

This report provides key results of a three-year experimental and theoretical research and development effort performed under the auspices of the U.S. Nuclear Regulatory Commission. The goal of the R&D was to establish the validity of online calibration monitoring of process instrumentation channels in nuclear power plants. The author concludes that the normal outputs of instrument channels in nuclear plants can be monitored over a fuel cycle while the plant is operating and during startup and shutdown periods to verify the calibration of the instruments, thereby improving plant efficiency and safety, eliminating unnecessary calibrations, and reducing operations and maintenance costs.