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Title: Water inventory management in condenser pool of boiling water reactor

An improved system for managing the water inventory in the condenser pool of a boiling water reactor has means for raising the level of the upper surface of the condenser pool water without adding water to the isolation pool. A tank filled with water is installed in a chamber of the condenser pool. The water-filled tank contains one or more holes or openings at its lowermost periphery and is connected via piping and a passive-type valve (e.g., squib valve) to a high-pressure gas-charged pneumatic tank of appropriate volume. The valve is normally closed, but can be opened at an appropriate time following a loss-of-coolant accident. When the valve opens, high-pressure gas inside the pneumatic tank is released to flow passively through the piping to pressurize the interior of the water-filled tank. In so doing, the initial water contents of the tank are expelled through the openings, causing the water level in the condenser pool to rise. This increases the volume of water available to be boiled off by heat conducted from the passive containment cooling heat exchangers. 4 figs.
Inventors:
Issue Date:
OSTI Identifier:
203887
Assignee:
General Electric Co., San Jose, CA (United States) OAK; SCA: 220900; 210100; PA: EDB-96:058931; SN: 96001559460
Patent Number(s):
US 5,499,278/A/
Application Number:
PAN: 8-402,589; TRN: 96:009476
Contract Number:
AC03-90SF18494
Resource Relation:
Other Information: PBD: 12 Mar 1996
Research Org:
General Electric Co
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; 21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; ISOLATION CONDENSERS; HIGH PRESSURE COOLANT INJECTION; WATER SUPPLY; MANAGEMENT; LOSS OF COOLANT; INVENTORIES