Dry cask storage is a method of storing high-level radioactive waste, such as spent nuclear fuel that has already been cooled in a spent fuel pool for at least one year and often as much as ten years.

2023年6月16日 · Dry cask storage allows spent fuel that has already been cooled in the spent fuel pool for at least one year to be surrounded by inert gas inside a container called a cask. The casks are typically steel cylinders that are either welded or bolted closed.

2020年6月1日 · This study presents the variation in TN-32 cask surface radiation dose rates from 10 years to 300 years under normal conditions. This work demonstrates a complete SNF dry cask radiation shielding numerical estimation process.

The cask is pumped with inert gas inside, and then is contained into another cask made of steel, concrete, or other radiation shielding material. Subsequently, this leak-tight and radiation-shielded dry cask can be stored either horizontally in concrete over-pack or vertically on a concrete pad.

Abstract: A containment enclosure for shielding an outer cask containing an inner canister loaded with nuclear waste such as spent fuel rods. The enclosure includes a lower base portion at least partially embedded in a concrete pad and an upper radiation shielding portion defined by a shield jacket coupled to and supported by the lower base ...

Because of the inert gas and natural cooling through convection and thermal radiation, the dry cask storage system does not require the complex radiation monitoring system that spent fuel pools use. The use of inert gas rather than liquid also …

High level and long lived intermediate level radioactive wastes require special handling and disposal because of the high level of ongoing activity within them. Special casks are designed to contain and store these materials on site where they are produced during their cooling off period, which is normally between 20 and 50 years.

The task of identifying dose rate limits for direct radiation from storage casks is complicated by three considerations. First, 10 CFR Part 72 states regulatory dose limits in terms of total absorbed doses rather than dose rates. Second, dose analyses must include potential sources of radiation other than direct radiation from spent fuel in the ...