Patent
1975-05-30
1977-12-20
Engle, Samuel W.
176 50, 176 61, 176 86L, 176 87, G21C 900, G21C 1500
Patent
active
040640027
ABSTRACT:
An emergency core cooling system for a nuclear reactor which preferably is supplemental to the main emergency core cooling system incorporated in the reactor at the time of construction. Under circumstances of a rupture in the reactor primary coolant piping and consequent drop in reactor coolant pressure, emergency supplemental coolant is supplied from tanks or accumulators through check valves into the head closure plenum area. From there, the coolant is distributed downwardly through hollow support columns and through control rod guide thimbles to the top of the fuel assemblies which comprise the reactor core. The pressure and flow of the emergency supplemental coolant is sufficiently great to overcome the normal upward flow of primary coolant through the core, the result being that the supplemental coolant causes collapse of bubbles otherwise generated by the heat producing fuel rods thereby permitting the supplemental coolant to effectively and efficiently carry away heat generated in the core.
REFERENCES:
patent: 3346459 (1967-10-01), Prince et al.
patent: 3528884 (1970-09-01), Collier
patent: 3816245 (1974-06-01), Bevilacqua
patent: 3819476 (1974-06-01), Pocock et al.
patent: 3849257 (1974-11-01), Bevilacqua
patent: 3920514 (1975-11-01), Calvin
Desmarchais Walter E.
Katz Leonard R.
Silverblatt Bernard L.
Campbell James R.
Dermer Zegmund L.
Engle Samuel W.
Palo Ralph
Westinghouse Electric Corporation
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