The Doel 3 reactor in Belgium remains shut down after potentially thousands of cracks were found in the reactor vessel. The cracks could date back 40 years to the reactor's original construction and were found three years before the reactor came on line but were not fixed. Recent ultrasonic tests found hairline cracks in the steel vessel housing the reactor. The fuel has been removed from the plant. Belgium's nuclear regulator said in a statement that, "We are considering these flaw indications very seriously."