The Illinois Emergency Management Agency uses remote monitoring to look at reactor data, gaseous effluence and gamma detection. A full-time inspector is assigned to each plant. The agency also oversees boiler and pressure vessel code compliance and conducts quarterly joint inspections with the Illinois Environmental Protection Agency.
Dresden, Clinton, LaSalle and Quad-Cities stations use boiling-water reactors; Braidwood and Byron stations use pressurized water reactors.
One-third to one-fourth of each unit’s fuel assemblies are replaced every two years. The majority of spent fuel is stored in onsite pools and later transferred to storage casks.
The state’s 11 operating commercial reactors generate about 50 percent of Illinois’ electricity.
SOURCE: Illinois Emergency Management Agency