Title: Evaporation of radioactive wastes

Abstract: An evaporation system for radioactive waste concentration comprises an evaporation chamber, a heat exchanger, and a circulation pump arranged in an upstanding spaced-apart configuration and enclosed within a radiation shield whereby access to the system is limited and frequently only possible from overhead. The steam chest of the heat exchanger is suspended from a removable top plate to allow removal for repair or replacement without exposing maintenance personnel to radiation. A novel circulation pump having a vertical shaft and propeller supported from a top plate which can be removed from overhead also allows maintenance or replacement of the pump without exposure to radiation or having to drain the system.

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Inventors: Rushton, William E. (South Holland, IL, US)

Application Number: 361208
Filing Date: 1973-05-17
Publication_date: 1976-01-20
Assignee: Whiting Corporation (Harvey, IL)
Primary Class(es): 159/27.2 159/28.1, 159/901, 159/DIG12, 165/74, 976/DIG381
Other Classes:
US Patent Ref:

841030	Jan, 1907	Marshall	159/25.
1436739	Nov, 1922	Webre	159/27.
1791281	Feb, 1931	Morse	23/312.
1832412	Nov, 1931	Newton	165/74.
1835620	Dec, 1931	Webre	159/25.
1953293	Apr, 1934	Forncrook	165/74.
1975560	Oct, 1934	Sollich	159/3.
2695869	Nov, 1954	Sondermann	202/52.
2991161	Jul, 1961	Gasche	165/74.
3057603	Oct, 1962	Isreeli	165/74.

Other Refs: 158,569159,8151,381,4501,199,253

Jun, 1922	UK
Jun, 1922	UK
Nov, 1964	FR
Jul, 1970	UK

Primary Examiner: Sofer, Jack
Assistant Examiner:
Attorney: Lockwood, Dewey, Zickert & Alex