Hans H Amtmann

US Patent:

43031773, Dec 1, 1981

Filed:

Mar 5, 1979

Appl. No.:

6/017418

Inventors:

Hans H. Amtmann - San Diego CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B65D 8546

US Classification:

220323

Abstract:

A closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.

US Patent:

43222684, Mar 30, 1982

Filed:

Apr 3, 1978

Appl. No.:

5/892821

Inventors:

Hans H. Amtmann - Rancho Santa Fe CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G21C 1928

US Classification:

376298

Abstract:

A cooling system for a gas-cooled nuclear reactor is disclosed which includes at least one primary cooling loop adapted to pass coolant gas from the reactor core and an associated steam generator through a duct system having a main circulator therein, and at least one auxiliary cooling loop having communication with the reactor core and adapted to selectively pass coolant gas through an auxiliary heat exchanger and circulator. The main and auxiliary circulators are installed in a common vertical cavity in the reactor vessel, and a common return duct communicates with the reactor core and intersects the common cavity at a junction at which is located a flow diverter valve operative to effect coolant flow through either the primary or auxiliary cooling loops.

Author:

Hans H. Amtmann

ISBN #:

0914144359