The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2018
Filed:
Jan. 23, 2014
Korea Atomic Energy Research Institute, Daejeon, KR;
Young In Kim, Daejeon, KR;
Won Jae Lee, Sejong-Si, KR;
Cheon Tae Park, Daejeon, KR;
Keung Koo Kim, Daejeon, KR;
Soo Jai Shin, Daejeon, KR;
Seung Yeop Yoo, Daejeon, KR;
Young Min Bae, Daejeon, KR;
Joo Hyung Moon, Daejeon, KR;
Ju Hyeon Yoon, Daejeon, KR;
KOREA ATOMIC ENERGY RESEARCH INSTITUTE, Daejeon, KR;
Abstract
The present disclosure may disclose a multi stage safety injection device, including a safety injection tank formed to contain coolant to be injected into a reactor vessel by a gravitational head of water when an accident occurs in which the pressure or water level of the reactor vessel is decreased, a pressure balance line connected to the reactor vessel and safety injection tank to form a pressure balance between the reactor vessel and the safety injection tank, and a set of safety injection lines connected to the safety injection tank and the reactor vessel to inject coolant to the reactor vessel in a pressure balance state between the reactor vessel and the safety injection tank, and connected to the safety injection tank with different heights to reduce a flow rate of coolant injected into the reactor vessel step by step according to the water level reduction of the safety injection tank in order to inject coolant to the reactor vessel at multi stages.