Reactor Coolant Flow Measurements at Point Lepreau

Abstract

The CROSSFLOW ultrasonic flow measurement system manufactured by AMAG is fully proven as reliable and accurate when applied to large piping in defined geometries for such applications as feedwater flow measurement. Its application to direct reactor coolant flow (RCF) measurements - both individual channel flow sand bulk flows such as pump suction flow - has been well established through recent work by MAG at Point Lepreau, with application to other reactor types (e.g., PWR) imminent. At Point Lepreau, Measurements have been demonstrated at full power; improvements 10 consistently meet 57% accuracy are in progress. The development and recent customization of CROSSFLOW to RCF measurement at Point Lepreau are described in this paper; typical measurement results are included.