What size defects can be detected?


Using the rule of one measurement location (Thermal Wire® cable or CSL-type access tube) in the cross section for each foot (300 mm) of shaft diameter, the zone of detection is dependent on the size of the anomaly: larger anomalies are detected by multiple tubes or Thermal Wire cables whereas smaller anomalies are only detected by the closer cables or access tubes. In general, a 10% cross section anomaly is detected by multiple Thermal Wire cables or access tubes. Defects of 5% of the cross section are generally easy to find.