Experience in Long Term O Experiments in Dynam

The Creep loop of In-Sodium Test Facility (INSOT) sodium simultaneously at high temperature of 873 K and 225 MPa with the test durations of 7160, 7810, hours at 873 K is the longest test campaign in the checks, conducting periodic loop surveillance and im uninterrupted loop operation. The sodium system as control system and maintained for the in-sodium cre plugging meter and maintained by continuous on li n than 2 ppm. The temperature of sodium was main t surrounding the test specimen was maintained at 2.5 impurity content in the loop and carbon activity asse presents measures adopted and the experience gaine d at high temperature for very long duration.