Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Shield or barrier between radiation or heat source and...
Patent
1989-02-27
1992-01-28
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Shield or barrier between radiation or heat source and...
2505151, G21C 1100
Patent
active
050842331
ABSTRACT:
A frame 10 with downwardly projecting members 52 mounts by means of a pair of hoists 36 and lifting bracket 42 downwardly into upwardly open recesses of complementary mounting members 54 secured to reactor head lifting legs 30. Frame 10 is mounted on the head either with lead wool shielding blankets 40 hanging from it or without. In the latter case, hangers 60 with blankets 40 hanging therefrom and horizontally gravity biased hooks 64 mounted on a curved beam 62, are lowered by hoist 36 until hooks 64 grapple, pivot and hang hanger 60 and the shielding on frame 10 at a location radially inwardly of the head bolt locations 22. The hook of hoist 36 is lowered until it is disengaged from the radially outwardly biased bail 70 of hanger 60.
REFERENCES:
patent: 4530813 (1985-07-01), Jacobson
patent: 4574070 (1986-03-01), Blaushild et al.
patent: 4654188 (1987-03-01), Hankinson
patent: 4708843 (1987-11-01), Desfontaines et al.
patent: 4797247 (1989-01-01), Blaushild et al.
patent: 4828789 (1989-05-01), Hankinson et al.
Roebelen George J.
Schukei Glen E.
Combustion Engineering Inc.
Mulholland John H.
Wasil Daniel D.
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