First time in the history for foreign technology we have done successfully full Heat Treatment support for 32 joints and block 1 & 2 without any failure that is the great advantage for us and all Russian scientists and Indian scientists are appreciated us. For maintain the temperature we have used Glass wool wrapped both side one meter and two layers of glass wool to monitor the temperature we have installed Thermocouple in various places and connected with PID and Recorders according to the welding procedure.
- 1. Our main job is during the welding of the Reactor pipes 70mm thickness maintain the preheat temperature 220 degree Centigrade for entire completion of the welding.
2. After that soaking for 600 degree Centigrade holding for 8 hours then cooling to the room temperature gradually.
3. For monitoring the full cycle we have used the PCM, PID, Recorder