BYRON, Ill. (AP) -- Federal regulators are inspecting a nuclear power station near Rockford operated by a unit of Exelon Corporation after a pipe leak was found last week.

The Nuclear Regulatory Commission says it's conducting a special inspection at the Byron plant to review what caused pipe corrosion in a cooling water system and a subsequent leak in one pipe. (The two-reactor station is located about 25 miles southwest of Rockford.)

The company shut down both reactors last Friday to repair the leak and inspect similar pipes. The pipes carry non-radioactive water from the plant where it's used to cool safety equipment back to basins under fan-driven cooling towers.

Byron Station spokesman Bob Kartheiser says the leak developed while plant workers were performing further tests of the pipes.