Component Cooling Water System for Nuclear Power Plant

Primary Inventor: Krishna P. Singh
Contributing Inventor(s): Joseph Rajkumar
Date of Publication: October 10, 2017
Status: Granted
Jurisdiction: US
Equipment Type: SMR
Docket Number: HOL-070
Application Number: 14/423,149
Patent Number(s): US 9,786,394 B2

PCT Filed: August 21, 2013
PCT Number:PCT/US2013/056023
PCT Publication Number: WO2014/031767
PCT Publication Date: February 24, 2014

Prior Publication Data: US 2015/0170772 A1 on June 18, 2015

Related U.S. Publication Data:

  • Continuation-in-part of application No. PCT/2013/042070, filed on May 21, 2013.
  • Provisional application No. 61/691,533, filed on August 21, 2012, provisional application No. 61/649,593, filed on May 21, 2012.

Abstract: A component cooling water system for a nuclear power plant. In one embodiment, the system includes an inner containment vessel housing a nuclear reactor and an outer containment enclosure structure. An annular water reservoir is formed between the containment vessel and containment enclosure structure which provides a heat sink for dissipating thermal energy. A shell-less heat exchanger is provided having an exposed tube bundle immersed in water held within the annular water reservoir. Component cooling water from the plant flows through the tube bundle and is cooled by transferring heat to the annular water reservoir. In one non-limiting embodiment, the tube bundle may be U-shaped.