For tanks TK-101 / TK-101Zs. (Tank hydrocarbon 5 atoms; C5 Monomer) tank TK-103 / TK-103Zs. (Tank hydrocarbon 5 atoms; C5 Raffinate) tank can withstand pressure of more than 2.5 times the working pressure monitoring by means of pressure and water pressure of 1.7 times the pressure of the gas. When the tank pressure increased to 1.400 mmAq. Alarms are raised.The control room and employees will stop adding chemicals. By stopping the pump into the tank When the pressure of the tank up to the control at 1.500 mmAq. Alarms from the control room. The pump will stop infusing chemicals. Tank automatically to prevent pressure increase.