Passive decay heat removal system for water-cooled nuclear reactors

Patent · Tue Dec 31 04:00:00 EST 1991

OSTI ID:6826022

Forsberg, C W

This patent describes a passive decay-heat removal system for a water-cooled nuclear reactor having a reactor vessel and a reactor core disposed in the vessel for passage of coolant water through the core, the coolant water extending upward to a level substantially above the core in normal operation condition. It comprises: an open-topped box located above the core and immersed in the coolant water at its normal operating level; a passive closed heat transfer loop including first and second heat exchangers, means communicating an outlet of the first heat exchanger with an inlet of the second heat exchanger and an outlet of the second heat exchanger with an inlet of the first heat exchanger; heat-exchanging fluid contained in the loop; and means for draining the box.

• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): None
• Application Number: PPN: US 7-596155
• OSTI ID: 6826022
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100 -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AFTER-HEAT REMOVAL
CONTAINERS
COOLING SYSTEMS
DESIGN
ENERGY TRANSFER
HEAT EXCHANGERS
HEAT TRANSFER
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR CORES
REACTOR VESSELS
REACTORS
REMOVAL
WATER COOLED REACTORS