Patents by Inventor Chien C. Lin

Chien C. Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preventing Co-60 contamination of cooling water circuits in nuclear reactor
    Patent number: 5375152
    Abstract: A method for preventing or reducing the formation of Co-60 contaminated material on the surfaces of a cooling water circuit of a nuclear reactor. The method is carried out during shutdown of the reactor. First, Co-60 contaminated material formed on the surfaces of the cooling water circuit is chemically removed. Then at least one iron compound is added to the cooling water in an amount sufficient to scavenge cobalt from the cooling water. Thereafter, oxygen is injected into the cooling water to provide a dissolved oxygen concentration sufficient to form an oxide film on the surfaces of the cooling water circuit. The oxide film so formed is substantially free of Co-60 isotope. This treatment reduces the radiation hazard to nuclear reactor personnel.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: December 20, 1994
    Assignee: General Electric Company
    Inventor: Chien C. Lin
  • Method of controlling Co-60 radiation contamination of structure surfaces of cooling water circuits of nuclear reactors
    Patent number: 5245642
    Abstract: A method for chemically controlling cobalt decontaminating the water cooling system of a water cooled nuclear fission reactor to reduce the radiation hazard to personnel.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: September 14, 1993
    Assignee: General Electric Company
    Inventor: Chien C. Lin