Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Pressure suppression and relief
Patent
1993-01-21
1994-04-12
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Pressure suppression and relief
376298, 376299, G21C 900
Patent
active
053032748
ABSTRACT:
A satellite heat removal means can be embodied as an original nuclear system feature but is especially adapted to be retrofitted to an existing nuclear reactor system to serve optionally to supplement heat removal from the system nuclear reactor containment upon happening of a LOCA, and to assume all system containment drywell venting in the event reactor core meltdown results in breach of the containment floor structure separating the containment drywell and wetwell space which breach would deprive the containment of a space to which a non-condensable fraction of LOCA generated heated fluid in the containment could be vented, cooled and stored. The satellite heat removal means includes a structural external of but preferably situated alongside the nuclear reactor containment. A heat exchanger surrounded by a pool of cooling water is located in an upper chamber of the structure while a pool of water is present in a lower chamber of the structure. The heat exchanger is communicated with the containment drywell by inlet and outlet conduits so that heated fluid in the containment can enter and be cooled in the heat exchanger with a cooled condensate fraction being returned from the heat exchanger to the containment drywell, and a non-condensable gas fraction vented to the pool of water in the lower chamber. A gas space above the lower chamber pool of water substitutes as the wetwell gas space to which non-condensables vent in place of the containment wetwell gas space that was breached and thus merged with the containment drywell space as an incident of the LOCA.
REFERENCES:
patent: 5059385 (1991-10-01), Gluntz et al.
patent: 5082619 (1992-01-01), Sawyer
patent: 5106571 (1992-04-01), Wade et al.
patent: 5126099 (1992-06-01), Van Kuijk
Beulick J. S.
General Electric Company
Wasil Daniel D.
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