Patents by Inventor Raymond Calvo

Raymond Calvo 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).

  • Safety system grade apparatus and method for detecting a dropped control rod and malfunctioning exit thermocouples in a pressurized water reactor
    Patent number: 5373539
    Abstract: A safety system grade dropped rod detection system for a pressurized water reactor (PWR) utilizes core exit thermocouples arranged in multiple trains and hot and cold leg RTDs to generate a safety system grade rod stop signal. The system generates from the temperature signals a relative power deviation (RD) and a curvature index (CI), which is the spatial second derivative of RD for each fuel assembly. The CI signatures not only provide rapid, reliable detection of dropped control rods, but also clearly identify failed and failing thermocouples.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: December 13, 1994
    Assignee: Westinghouse Electric Corporation
    Inventors: Albert J. Impink, Jr., Michael D. Heibel, Toshio Morita, Raymond Calvo
  • Safety system grade apparatus and method for detecting a dropped control rod and malfunctioning exit thermocouples in a pressurized water reactor
    Patent number: 5297174
    Abstract: A safety system grade dropped rod detection system for a pressurized water reactor (PWR) utilizes core exit thermocouples arranged in multiple trains and hot and cold leg RTDs to generate a safety system grade rod stop signal. The system generates from the temperature signals a relative power deviation (RD) and a curvature index (CI), which is the spatial second derivative of RD for each fuel assembly. The CI signatures not only provide rapid, reliable detection of dropped control rods, but also clearly identify failed and failing thermocouples.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: March 22, 1994
    Assignee: Westinghouse Electric Corp.
    Inventors: Albert J. Impink, Jr., Michael D. Heibel, Toshio Morita, Raymond Calvo