Coolant standpipe system for protection of a nuclear reactors sa

Details Coolant standpipe system for protection of a nuclear reactors sa Coolant standpipe system for protection of a nuclear reactors sa

1981-09-23

1985-03-19

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Pressure suppression and relief

376293, 376298, G21C 900, G21C 1920

Patent

active

045058750

ABSTRACT:
A standpipe runs up from a liquid storage vessel located between the safety vessel of a nuclear reactor and the safety enclosure around it and connected by a pressure equalization line to the interior space of the safety vessel. Undesired pressure increases in the interior of the safety vessel are absorbed by pushing water out of the storage vessel up the standpipe to a discharge above the safety vessel which is still within the safety enclosure. With sufficient pressure, the liquid, which may be conveniently water, flows from the standpipe to an overflow collar at the top of the safety vessel from which it runs down over the surface of that vessel to cool it. Water that evaporates is collected on the interior wall of the safety enclosure and also percolates down to the base of the safety enclosure, from which it is pumped back to the overflow collar, from which it can flow back into the pressure vessel when the pressure inside the safety vessel of the reactor goes back to normal.

REFERENCES:
patent: 3115450 (1963-12-01), Schanz
patent: 3168445 (1965-02-01), Ziegler et al.
patent: 3379613 (1968-04-01), Tagami et al.
patent: 3454466 (1969-07-01), Pitt et al.
patent: 4022655 (1977-05-01), Gaouditz et al.
patent: 4056436 (1977-11-01), Bukrinsky et al.
patent: 4151689 (1979-05-01), Schabert
patent: 4243485 (1981-01-01), Chabin
patent: 4297167 (1981-10-01), Schabert
patent: 4362693 (1982-12-01), Bukrinsky et al.

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