SMR Nuclear reactor and start-up method of nuclear reactor system

• Main Author: KIM, MUN SOO
• Format: Patent
• Language: English; Korean
• Published: 11.07.2018
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The present invention relates to an SMR nuclear reactor and a nuclear reactor system starting method. The SMR nuclear reactor according to the present invention includes: a reactor vessel; a core located in the reactor vessel; a steam generator located in the reactor vessel and located on the upper side of the core; a shroud surrounding the core; a riser located on the upper side of the shroud and including a smaller cross section than the shroud; and a heater located between the shroud and the reactor vessel. Accordingly, the present invention can prevent a natural circulation flow from being reduced in the reactor. 본 발명은 SMR 원자로와 원자로 시스템 기동방법에 관한 것이다. 본 발명에 따른 SMR 원자로는 원자로 용기; 상기 원자로 용기 내에 위치하는 노심; 상기 원자로 용기 내에 위치하며 상기 노심의 상부에 위치하는 증기발생기; 상기 노심을 둘러싸고 있는 쉬라우드; 상기 쉬라우드 상부에 위치하며 상기 쉬라우드보다 단면적이 작은 라이저: 및 상기 쉬라우드와 상기 원자로 용기 사이에 위치하는 히터를 포함한다.