Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Emergency core coolant systems
Patent
1992-06-24
1993-12-07
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Emergency core coolant systems
376299, G21C 1518
Patent
active
052689433
ABSTRACT:
A pressurized water nuclear reactor uses its residual heat removal system to make up water in the reactor coolant circuit from an in-containment refueling water supply during staged depressurization leading up to passive emergency cooling by gravity feed from the refueling water storage tank, and flooding of the containment building. When depressurization commences due to inadvertence or a manageable leak, the residual heat removal system is activated manually and prevents flooding of the containment when such action is not necessary. Operation of the passive cooling system is not impaired. A high pressure makeup water storage tank is coupled to the reactor coolant circuit, holding makeup coolant at the operational pressure of the reactor. The staged depressurization system vents the coolant circuit to the containment, thus reducing the supply of makeup coolant. The level of makeup coolant can be sensed to trigger opening of successive depressurization conduits. The residual heat removal pumps move water from the refueling water storage tank into the coolant circuit as the coolant circuit is depressurized, preventing reaching the final depressurization stage unless the makeup coolant level continues to drop. The residual heat removal system can also be coupled in a loop with the refueling water supply tank, for an auxiliary heat removal path.
REFERENCES:
patent: 4064392 (1977-12-01), Desalu
patent: 4587080 (1986-05-01), Johnson
patent: 4647425 (1987-03-01), Battaglia et al.
patent: 4694693 (1987-09-01), Gerlowski
patent: 4753771 (1988-06-01), Conway et al.
patent: 5180543 (1993-01-01), Conway et al.
Corletti Michael M.
Schulz Terry L.
Valentine J. C.
Wasil Daniel D.
Westinghouse Electric Corp.
LandOfFree
Nuclear reactor with makeup water assist from residual heat remo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nuclear reactor with makeup water assist from residual heat remo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear reactor with makeup water assist from residual heat remo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2021476