Arcelormittal

George B Tsvik

Michael A Masleid

Zofia E Niemczura

Mahdi Farahani

Gabriel Jesus Lucena Mogollon

Justin Farley

Odile Carrier

Jon Reyes Rodriguez

Dennis Lu

Marcelo Andrade

José Barros Lorenzo

Sarah Salame

Testing methods and apparatus for testing the health of steel tubes used in reformers and other tubes and pipes used in other high temperature applications. The method includes the steps of transmitting two sinusoidal electromagnetic signals, each having a different frequency Fand Finto the reformer tube, receiving a response signal, and analyzing the received response signal's intermodulation frequencies to determine the state of the steel reformer tube.

Method and apparatus for determining the health and remaining service life of austenitic steel reformer tubes and the like

A direct reduction shaft furnace having at least one probe disposed vertically within the reduction zone thereof. The probe preferably extends from the top to the bottom of the reduction zone. The probe allows for gas sampling along the length thereof and transmittal of the gas to at least one type of gas analysis device. The probe may also allow for the measurement of the temperature and pressure of the gas sample as it is taken.

Direct reduction shaft furnace with probe for measuring interior gas analysis

Testing methods and apparatus for testing the health of steel tubes used in reformers and other tubes and pipes used in other high temperature applications are provided. The method includes the steps of transmitting two sinusoidal electromagnetic signals, each having a different frequency F1 and F2, into the reformer tube, receiving a response signal, and analyzing the received response signal's intermodulation frequencies to determine the state of the steel reformer tube.

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Valparaiso, IN, United States of America

George B Tsvik