REACTOR VESSEL COOLANT DEFLECTOR SHIELD

摘要

A power module (30) includes a reactor vessel (52) containing a coolant (100) and a reactor core (6) located near a bottom end of the reactor vessel. A riser section (24) is located above the reactor core, wherein the coolant circulates past the reactor core and up through the riser section. In one embodiment, a coolant deflector (35) shield includes flow-optimized surfaces, wherein the flow-optimized surfaces direct the coolant towards the bottom end of the reactor vessel. In another embodiment, the reactor housing includes an inward facing portion (65) that varies a flow pressure of the coolant and promotes a circulation of the coolant past a baffle assembly (50) and towards the bottom end of the reactor vessel.