Patent ID: 8630385

Claim:
A longitudinally divided emergency core cooling (ECC) duct for emergency core cooling water injection to a nuclear reactor, the longitudinally divided ECC duct configured to be provided on a periphery of a core barrel of the nuclear reactor, the longitudinally divided ECC duct including an emergency core cooling water inlet configured to face a direct vessel injection nozzle, and configured to extend in a longitudinal direction of the core barrel, wherein the longitudinally divided ECC duct is formed of a plurality of longitudinally-divided ducts divided in the longitudinal direction; wherein the longitudinally divided ECC duct includes an upper surface with side slopes configured to form a flow passage for the emergency core cooling water injected from the direct vessel injection nozzle; and wherein a plurality of side supports extend outward from the side slopes of the longitudinally divided ECC duct to affix the longitudinally divided ECC duct to the periphery of the core barrel.