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.
In contrast, nuclear power plants use controlled chain reactions. The energy released from the nuclei in the uranium fuel is used to generate electrical energy. A common fuel is fissionable uranium (IV) oxide (UO2) encased in corrosion-resistant rods. U-238 is the most abundant isotope (99%) of uranium.