Measurement of corrosion products (CP) deposition in the experimental fast reactor Joyo; CP deposition distribution after MK-III modifications

Ito, Chikara   ; Ito, Hideaki; Ishida, Koichi; Aoyama, Takafumi 

In the experimental fast reactor Joyo, measurement for characterizing and predicting the deposition condition and the condition change of the corrosion product (CP) that is the major radiation source in equipments and piping of primary cooling system has been carried out regularly from early period of reactor operation. Cooling system modification work with the shift to the MK-III core was carried out after the last measurement that was carried out, and the main equipments such as intermediate heat exchangers were replaced. This measurement in this report was carried out at after the 2nd cycle operation of the MK-III core which started formal operation.