International SOS Clinic Nanjing. Address: 1st floor of Hilton Hotel, No.319 at Zhongshan Donglu. Opening hours. Monday to Friday 9am to 6pm. Saturday 24hr emergency care only.
Control Rods. The nuclear chain reaction may be controlled using a device called a control rod. Control rods are made of materials which absorb neutrons. Thus, when a control rod is inserted into a nuclear reactor it reduces the number of free neutrons available to cause the uranium atoms to fission.
Rods inserted among the tubes holding the uranium fuel control the nuclear reaction. Control rods, inserted or withdrawn to varying degrees, slow or accelerate the reaction. Water separates fuel tubes in the reactor. The heat produced by fission turns this water into steam.