Flood and wind resistant ventilated modules for spent nuclear fuel storage

摘要

A passive cooling storage module for spent nuclear fuel comprises an elongated body comprising a top portion, a bottom portion, a side wall, a base plate, a removable cover, and a cavity for holding a fuel canister containing a spent nuclear fuel assembly to dissipate heat. Includes. The spaced apart cooling air inlet ducts draw the surrounding cooling air radially inward to the bottom of the cavity. Air flows upwards in the cavity along the canister and is discharged to the atmosphere through natural circulation at the top of the module. The air inlet duct may have multiple angled circulation configurations including one or more oblique angled sections in one embodiment. The outer inlet end opening of the inlet duct is disposed at a higher height than the inner outlet end opening to prevent intrusion of stagnant and flood-related water. Radiation shielding is included in the ducts and covers.