NACOWA Experiments on Release and Transfer Of Cesium, Zinc, and Iodine from a Sodium Pool Under EFR Conditions

EFR is a common European project for a 1500 MW el fast breeder reactor [1]. According to the first consistent design of 1991, the primary sodium tank will contain a sodium pool of 17 m diameter and 545 °C surface temperature, an argon cover gas of 0.85 m height, and an air-cooled upper closure with the ‘low’ temperature of 120 °C (simplified sketch see Fig. 1).