Patents Assigned to Aptech Engineering, Inc.
  • Method for extending the useful life of boiler tubes
    Patent number: 5050108
    Abstract: A method for increasing the reliability and remaining useful life of a system of boiler tubes. The present condition of boiler tubes is ascertained and a temperature profile is developed. Additional operating parameters are obtained and used to model the tube system. The model is manipulated to predict a modification which will cause increased tube system life and reliability. The tubes are modified according to the model.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: September 17, 1991
    Assignee: Aptech Engineering, Inc.
    Inventors: Kimble J. Clark, Kevin G. Hara, Clayton Q. Lee, Richard S. Moser, Terry W. Rettig