Cooling of pressurized water nuclear reactor vessels

Details Cooling of pressurized water nuclear reactor vessels Cooling of pressurized water nuclear reactor vessels

1976-10-14

1978-04-04

Behrend, Harvey E.

176 50, 176 38, G21C 1500

Patent

active

040826082

ABSTRACT:
The improvement of pressurized water nuclear reactor vessels comprising flow dividers providing separate and distinct passages for the flow of core coolant water from each coolant water inlet, the flow dividers being vertically disposed in the annular flow areas provided by the walls of the vessel, the thermal shield (if present), and the core barrel. In the event of rupture of one of the coolant water inlet lines, water, especially emergency core coolant water, in the intact lines is thus prevented from by-passing the core by circumferential flow around the outermost surface of the core barrel and is instead directed so as to flow vertically downward through the annulus area between the vessel wall and the core barrel in a more normal manner to increase the probability of cooling of the core by the available cooling water in the lower plenum, thus preventing or delaying thermal damage to the core, and providing time for other appropriate remedial or damage preventing action by the operator.

REFERENCES:
patent: 3366546 (1968-01-01), Anthony et al.
patent: 3623948 (1971-11-01), Dotson et al.
patent: 3864209 (1975-02-01), Tong
patent: 3868302 (1975-02-01), Singleton

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