Liquid alkali metal-water, tube-in-shell steam generators

Details Liquid alkali metal-water, tube-in-shell steam generators Liquid alkali metal-water, tube-in-shell steam generators

1987-06-16

1989-06-06

Davis Jr., Albert W.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

165 70, 165159, 165160, 165161, 376250, 73 40, 73 407, G01M 304, F28F 1308, G21C 1700

Patent

active

048362743

ABSTRACT:
A proportion of the liquid metal flow passing through a fast reactor steam generator unit (SGU) is diverted past the outlet to a quiescent zone in the region of immersed tube-to-tubeplate welds at the water entry ends of the tubes, into which zone are given off any hydrogen bubbles which may result from a water leak into the liquid metal. The liquid metal in this zone is caused to flow through a weir system above which there is a gas space for collection of hydrogen, suitable means being provided for detection of hydrogen in this space. The hydrogen is entrained at the water inlet tube plate, the invention making use of the slow solution rate of hydrogen in sodium at lower temperatures prevailing in the quiescent zone at the water inlet end.

REFERENCES:
patent: 3811498 (1974-05-01), Ferraro et al.
patent: 3907026 (1975-09-01), Mangus
patent: 3943751 (1976-03-01), Akiyama et al.
patent: 3975943 (1976-08-01), Brachet
patent: 4072183 (1978-02-01), Fraas
patent: 4199975 (1980-04-01), Schrock et al.
patent: 4325171 (1982-04-01), Nobles
patent: 4418748 (1983-12-01), Pouderoux et al.
patent: 4515748 (1985-05-01), Frabregue
patent: 4665866 (1987-05-01), Wepfer
patent: 4724799 (1988-02-01), Traiteur et al.

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