Patents by Inventor Stephane Vivet

Stephane Vivet 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).

  • Process for the monitoring of leaks in the primary circuit of a pressurized water nuclear reactor
    Patent number: 4650635
    Abstract: The invention relates to a process for monitoring leaks in the primary circuit of a pressurized water nuclear reactor.The primary circuit consists of the vessel (1), the primary part of the steam generators (6), pipework (3, 4), the pressurizer (10) and various stocktanks (20). Connected to the primary circuit is at least one auxiliary circuit such as the circuit for volumetric and chemical monitoring comprising a stocktank (17). A sectioning of the primary circuit and of the circuit for volumetric and chemical monitoring into volume elements, excluding the stocktanks (20, 17) is determined. At regular time intervals, or steps, the mass of water in each of the volume elements and in each of the stocktanks is determined from measurements of pressure, temperature and levels and then, by addition, of the total mass of water.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: March 17, 1987
    Assignee: Framatome & Cie.
    Inventors: Guy Le Rat, Stephane Vivet