Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Expansion means
Patent
1984-11-19
1987-06-09
Kyle, Deborah L.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Expansion means
376461, G21C 900
Patent
active
046719237
ABSTRACT:
A holddown spring retention assembly for use in a nuclear reactor having a pressure vessel, a core barrel having an upper outwardly extending flange, an inner barrel having an upper outwardly extending flange and an annular holddown spring, the barrels and the spring being installed in the pressure vessel during normal operation, with the inner barrel flange disposed above the core barrel flange and the holddown spring interposed between the core barrel flange and the inner barrel flange, the holddown spring retention assembly is composed of a plurality of assembly units disposed around the periphery of the holddown spring, each unit including a lift lug secured to the outer periphery of the spring and having at least one outwardly radially projecting portion and a hanger secured to the inner barrel flange and having a lower portion suspended below the inner barrel flange and below the radially projecting portion of the lift lug means; the lower portion being arranged to support the radially projecting portion during lifting of the inner barrel upwardly away from the core barrel so that the spring is lifted together with the inner barrel.
REFERENCES:
patent: 2982713 (1959-01-01), Sankovich et al.
patent: 3158543 (1964-11-01), Sherman et al.
patent: 3957575 (1976-05-01), Fauth, Jr. et al.
patent: 4096034 (1978-06-01), Anthony
patent: 4104120 (1978-08-01), Grubelich
patent: 4280875 (1981-07-01), Werres
Abeles Daniel C.
Kyle Deborah L.
Wendtland Richard W.
Westinghouse Electric Corp.
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