Method and system for exporting waste heat of reactor core in containment

• Main Authors: DU SHUHONG, YANG CHANGJIANG, SUN ZHAN, MAO YAWEI, HUANG WEIFENG, ZHANG LI
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2021
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention discloses a method and system for exporting waste heat of a reactor core in a containment. The method comprises the steps that a low-pressure safety injection subsystem of a safety injection system is communicated with a heat exchanger of a waste heat removal system under a design basis accident working condition, wherein the low-pressure safety injection subsystem exports a coolant absorbing the waste heat of the reactor core to the heat exchanger for heat exchange and cooling, the coolant subjected to heat exchange and cooling by the heat exchanger returns and is injected into the reactor core, the coolant circularly flows, and the waste heat of the reactor core is continuously exported until the reactor core is in a safe state; under the design basis accident working condition and the condition that the low-pressure safety injection subsystem is put into use, the volume of the containment does not exceed the design pressure of the containment within at least 24 hours, and the combined design