Positive Material Identification
TPS is committed to insuring our clients can provide positive material identification to their customers in the products they provide. It is well known that mill certifications and heat markings alone can become unreadable. Since MTR’s are provided at the mill, by the time the material is handled at the service center and subsequent fabricators the chance for errors increase. In some parts or products this may not matter, but in critical applications the failure could be catastrophic, or even deadly.
TPS can analyze products already in use, such as vessels, boilers, piping, cranes, etc., to verify and identify the base material. We are then able to consult with you as to the proper material and procedures for repair to comply with the respective codes.
TPS use two different methods to identify materials. The first is XRF or X-ray Fluoresce, which X-rays are induced into the material. This excites the electrons in the atoms and they emit specific energies that correlate the elements in the material. This process is cheaper and easier to use; however, it cannot measure the energies given off by lighter elements like carbon. This method is also totally non-destructive and is completely portable at about 5 pounds.
TPS also uses OES or Optical Emission Spectrum, which uses the visual color spectrum. It excites the electrons in the atoms and they emit specific energy wavelengths that correlate to elements. By using the optical emission spectrum lighter elements like carbon can be calculated. Using OES also give more precise data, which can be given in the low PPM. This method leaves a burn mark on the material and is mostly portable at about 30 pounds.