Water inventory management in condenser pool of boiling water re

Details Water inventory management in condenser pool of boiling water re Water inventory management in condenser pool of boiling water re

1995-03-13

1996-03-12

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Auxiliary heat removal structure

165 1, G21C 1518

Patent

active

054992788

ABSTRACT:
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.

REFERENCES:
patent: 3677229 (1972-07-01), Blough et al.
patent: 4019338 (1977-04-01), Poteet
patent: 4950448 (1990-08-01), Gou et al.
patent: 5272737 (1993-12-01), Fujii et al.
patent: 5295168 (1994-03-01), Gluntz et al.

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