Publication Abstract




Grouting and Ground Treatment: Proceedings of the Third International Conference, (ASCE)

Humboldt Bay Nuclear Power Plant Repair Project
Monica M. Rourke

Humboldt Bay Power Plant was one of the first nuclear power plants built in the United States over 30 years ago. The reactor was one of the first nuclear power plants built in the United States over 30 years ago. The reactor was constructed utilizing a 60 ft. diameter caisson with internal divider walls, which was, sunk approximately 70 ft. below sea level, mucked out, plugged with a 6 ft. thick underwater tremie concrete placement and then pumped out. By design, the tremie concrete was covered by a 6 layer of drain rock, a 6 concrete slab, and in some areas a 3/16 steel liner plate which functioned as a tank for holding liquid (water) within the structure. The drain rock and a series of drainpipes through the divider walls routed any leakage to a sump where it could be pumped out.


 article #1171; publication #62 (GRT-2003)