1972 Robert Ginna U.S.

Fuel elements discharge from the Robert Ginna reactor in Rochester, New York, and prove to have undergone serious deformation during irradation. The fuel pin cladding is crushed and crumpled, and upon examination is found to be partially empty. Nobody knows how this happened - but similar types of fuel are being used in several factors now in operation in the United States Worries are being expressed that a wholly new phenomenon has been discovered, not necessarily confined to this type of fuel element.