Holtec’s dry storage systems are extremely robust, able to withstand all kinds of unusual and accident conditions that may be expected, up to and including disasters such as a crashing fighter plane. Under all conditions, the NRC requires dry storage systems to meet NRC safety requirements, including during and after an accident. Accident conditions include events from natural phenomena like earthquakes, burial under debris, lightning strikes, and other phenomena (e.g., seiches, tsunamis, and hurricanes). Principal requirements are that no radioactive material is released and that radiation dose rates remain within safety limits.
