Columbia Generating Station Unit 2 is located in Richland, Washington approximately 20 miles north-northeast of Pasco, Washington. The General Electric BWR is operated and owned by Energy Northwest. The plant is licensed to operated until December 20, 2023. The plant was formerly known as WNP-2.
The ISFSI for the Columbia Generating Station consists of 2 concrete storage pads, each measuring 30 feet wide by 135 feet long, surrounded by three security fences (only two are shown in the photograph). Each concrete pad is capable of holding 18 casks. An electrical control building is located within the security perimeter at the northeast corner. The ISFSI is located approximately 500 meters north-northwest of the reactor building.
The ISFSI for the Columbia Generating Station began accepting SNF in 2002 under a general license. As of the end of 2011, there were 1,836 assemblies stored in 27 dry casks (only 15 are shown in the photo). The casks are manufactured by Holtec — the Hi-Storm cask system and the MPC-68 canister type. As of the end of 2010, there were 620 metric tons of SNF in storage at Columbia Generating Station.