Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Shield or barrier between radiation or heat source and...
Patent
1989-11-30
1992-02-11
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Shield or barrier between radiation or heat source and...
220586, G21C 1300
Patent
active
050874098
ABSTRACT:
A multiple shell pressure vessel is fabricated in modular sections comprising a top head module, a nozzle course module and a bottom shell module, each module utilizing telescoping shells with filled interspaces, each shell being removable for inspection and repair with all modular sections and shells being held in compression by a pair of upper and lower single or multilayer tendon skirts held in place by a number of tension members in combination with hydraulic or mechanical jacks or rams. Both tendons and rams are located outside the pressure vessel. Included is a method of arranging the shell flanges and shell radial supports to reduce or eliminate torsional forces on the flanges and flange seals. A leak detection system monitors for leaks in all shells. A method of adjusting shell stresses during operation uses pumps to adjust the pressure of the filler material in the interspaces between shells. The high thermal conductivity of the outer vessel wall, which is due to good thermal bonding provided by the intershell metallic filler-materials, makes it possible to keep the pressure-carrying outer vessel shells cool during service, by cooling the outer shell by plain water, borated water for nuclear reactor vessels, or other coolant.
REFERENCES:
patent: 3131245 (1964-04-01), Lorenz
patent: 3282459 (1966-11-01), Wilson
patent: 3445971 (1969-05-01), Desmarchais et al.
patent: 3711371 (1973-01-01), Cahill
patent: 3744660 (1973-07-01), Gaines et al.
patent: 3910447 (1975-10-01), Bevilacqua
patent: 3940311 (1976-02-01), Frisch
patent: 4096034 (1978-06-01), Anthony
patent: 4675146 (1987-06-01), Sutton, Jr.
patent: 4767593 (1988-08-01), Wedellsborg
"Multilayer Pressure Vessel with Interlayer Metallic Cushions", B. W. Wedellsborg, Int. J. Pres. Ves. Piping 36 (1989) 1-20.
"Developments in Pressure Vessel Technology-4", R. W. Nichols, Chapter 4, Prestressed Cast Iron Pressure Vessels, D. Bounin and B. Beine, Applied Science Publishers, 1983.
Wedellsborg Bendt W.
Wedellsborg Ulrich W.
Tipton Robert R.
Wasil Daniel D.
LandOfFree
Pressure vessel improvement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure vessel improvement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure vessel improvement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780586