Patents by Inventor Sarah E. Evans

Sarah E. Evans 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).

  • System and method for crevice cleaning in steam generators
    Publication number: 20090183694
    Abstract: A method is provided for cleaning crevices between a plurality of tubes and a plurality of tube support plates supporting the tubes in a steam generator. The steps include filling a secondary side of the steam generator with a solvent to a first level above a first tube support plate to be cleaned, draining the solvent to a second level lower than the first tube support plate, and refilling the secondary side of the steam generator with the solvent to a third level above the first tube support plate. A cleaning system is also provided.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 23, 2009
    Applicant: AREVA NP INC.
    Inventors: John F. Remark, Sarah E. Evans
  • Injection of premixed concentrated chemical solution in steam generator chemical cleaning
    Publication number: 20090173293
    Abstract: A steam generator chemical cleaning system is provided wherein a concentrated chemical cleaning solution is premixed off-site in sufficient volume and concentration to allow the dilution to proper cleaning level be achieved by slow injection into the generator when filled with demineralized water. The premixed chemicals are transported in a tanker to the generator site and injected therein directly from the tanker.
    Type: Application
    Filed: January 4, 2008
    Publication date: July 9, 2009
    Inventors: John F. Remark, Joseph B. Delrue, Sarah E. Evans
  • Chemical cleaning of a steam generator during mode 5 generator shut down
    Patent number: 7302917
    Abstract: A Nuclear Steam Supply Stem (NSSS) Mode 5 Steam Generator Chemical Cleaning system is disclosed which applies chemical cleaning solvent (formulated to remove SG deposits) to the secondary side of the SG using primary side supplied heat during NSS Mode 5 shutdown to maintain the desired application temperature. Mixing is achieved via nitrogen sparging.
    Type: Grant
    Filed: August 27, 2005
    Date of Patent: December 4, 2007
    Assignee: Framatome Anp, Inc.
    Inventors: John F. Remark, Sarah E. Evans