Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Pressure suppression and relief
Patent
1994-01-05
1996-02-13
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Pressure suppression and relief
G21C 9004
Patent
active
054917301
ABSTRACT:
Pipes are mounted horizontally on an outlet portion of a gas vent pipe in a condenser-type heat removal system, and have-openings which are formed only in a portion below a horizontal plane in which axes of these pipes lie, thereby enlarging a region where uncondensed steam is mixed with water in a suppression pool. With this arrangement, a surface portion of the water of the suppression pool is prevented from becoming hot, and the temperature of this pool water is uniformed. As a result, the temperature of the water surface of the suppression pool is lowered, thereby decreasing the pressure within a primary containment vessel. This enhances the reliability of the primary containment vessel, and reduces a design strength of the primary containment vessel.
REFERENCES:
patent: 4305896 (1981-12-01), Tominaga et al.
patent: 4399082 (1983-08-01), Becker et al.
patent: 5059385 (1991-10-01), Gluntz et al.
patent: 5377243 (1994-12-01), Hill
Fifth International Topical Meeting On Reactor Thermal Hydraulics, Vol. II. (Sep. 1992), pp. 547-555.
Araki Hidefumi
Iwata Yasutaka
Kataoka Yoshiyuki
Murase Michio
Hitachi , Ltd.
Wasil Daniel D.
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