Limerick Generating Station was in need of custom shielding for their bio-shield doors. Even though shielding was already installed, there was still a gap that continued to be a source of dose. NPO worked closely with ALARA Specialist, Joe Bruno, at Limerick to design a 4-piece magnetic set of custom lead blankets. Each piece had magnets placed on the outside edge in order to stick to the steel doors with the inner portion consisting of only lead wool. An additional inch of material at the ends allowed for the blankets to overlap and eliminated the possibility of streaming. Finally, each blanket had printing on one side showing the total weight and magnet location. Over all, Limerick station saw about a 30-35% dose rate reduction after implementing NPO custom lead blanket shielding.
