Title:
SHUTDOWN SYSTEM FOR A NUCLEAR STEAM SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/099101
Kind Code:
A3
Abstract:
A nuclear steam supply system having a shutdown system for removing residual decay heat generated by a nuclear fuel core. The steam supply system may utilize gravity-driven primary coolant circulation through hydraulic-ally interconnected reactor and steam generating vessels forming the steam supply system. The shutdown system may comprise primary and secondary coolant systems. The primary coolant cooling system may include a jet pump comprising an injection nozzle disposed inside the steam generating vessel A portion of the circulating primary coolant is extracted, pressurized and returned to the steam generating vessel to induce coolant circulation under reactor shutdown conditions. The extracted primary coolant may further be cooled before return to the steam generating vessel in some operating modes. The secondary coolant cooling system includes a pumped and cooled flow circuit operating to circulate and cool the secondary coolant, which in turn extracts heat from and cools the primary coolant.
Inventors:
SINGH KRISHNA P (US)
RAJKUMAR JOSEPH (US)
RAJKUMAR JOSEPH (US)
Application Number:
PCT/US2013/063405
Publication Date:
August 28, 2014
Filing Date:
October 04, 2013
Export Citation:
Assignee:
SMR INVENTEC LLC (US)
International Classes:
G21C15/02
Domestic Patent References:
| WO1999054886A1 | 1999-10-28 |
Foreign References:
| US20120076254A1 | 2012-03-29 | |||
| US5202083A | 1993-04-13 | |||
| GB949608A | 1964-02-12 | |||
| US20100183113A1 | 2010-07-22 | |||
| US20050018806A1 | 2005-01-27 |
Other References:
"IAEA, PASSIVE SAFETY SYSTEMS AND NATURAL CIRCULATION IN WATER COOLED NUCLEAR POWER PLANTS", November 2009 (2009-11-01), pages 53 - 55, Retrieved from the Internet [retrieved on 20140510]
Attorney, Agent or Firm:
BELLES, Brian, L. (PC404 S. 16th Stree, Philadelphia PA, US)
Download PDF:
Previous Patent: THREE-DIMENSION PUZZLE
Next Patent: AIRFOIL MEMBER AND COMPOSITE PLATFORM HAVING CONTOURED ENDWALL
Next Patent: AIRFOIL MEMBER AND COMPOSITE PLATFORM HAVING CONTOURED ENDWALL