Design and build of the KR-260E calcination furnace temperature control system

The temperature control system of calcination furnace KR-260E has been design for calcination process UO₂ kernel. The design of the temperature control system is to replace the old damaged control module. The temperature controller of control module used is adjusted to kernel UO₂ calcination process with a gradual heating system. The controller is capable of storing 30 heating program patterns and each program can contain up to 10 steps of operation. The functional system test of the calcination furnace KR-260E temperature control system is carried out under no load conditions and is carried out gradually with consideration of the new heating conditions. The functional testing stage is at 200 °C, 300 °C, 450 °C and 600 °C with a 250 °C/hour heating ramp setting, 1 hour temperature soaking and the ramp decreasing to 250 °C/hour. The deviation at 200 °C deviation is 2,7 °C was obtained, at 300 °C the temperature deviation is 1,3 °C, at 450 °C was obtained overshoot is 9,8 °C and the mean temperature deviation is 0.2337 °C, and at 600 °C obtained an overshoot is 10,3 °C and an average temperature deviation is 5.0453 °C. The result of this function test indicates that the furnace can function for kernel UO₂ calcination operation. (author)