MK-III Performance Tests in JOYO; Control Characteristic Tests of Reactor Coolant Temperature Control System

Ito, Keisuke; Kawahara, Hirotaka ; Mori, Takero ; Jo, Takahisa; Ariyoshi, Masahiko; Isozaki, Kazunori 

Control characteristic tests of reactor coolant temperature control system were carried out to confirm its controlling constant to make MK-III hear transport system control stably, and stability against actual disturbance to the plant. The control characteristic test consists of three kinds of tests. As a result, the optimum PI parameters of the reactor coolant temperature control system was confirmed that the proportional gain is between from 0.36 to 1.12(approximately half of MK-II), the integral time is 80 respectively. The gain margin of the control system was between from 7 to 19dB of through the vane opening range.