On-line monitoring (OLM) of Enhanced CANDU~? 6 (EC6~?) plant instruments will detect the drifts of the instruments in a timely manner. The instrument drift monitoring will be performed by the Plant Display System (PDS) in the EC6 plant design. The PDS collects measurement data from the plant instrumentation for safety systems, reactor control systems, and process control systems. OLM functions will be performed on both safety and non-safety instruments. OLM of the EC6 plant instruments is expected to provide significant benefits to the safety and economics of the plant in operation while incurring only modest additional cost.
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