Solution: Remote Field Testing (RFT)
Solution: Remote Field Testing (RFT)
Remote Field Testing (RFT)
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RFT is a useful tube testing technique for inspection of ferromagnetic heat exchanger and boiler tubes. It has excellent sizing capabilities and perfectly applicable for erosion and corrosion examination. RFT is an electromagnetic through transmission technique, where sensors are detecting variations of the eddy currents induced in the far field of the transmitting coil of the probe.
It is slightly less sensitive than ECTT and can’t differentiate in- and outside defects. As alternative PSEC can be proposed when small pitting indications are expected or when baffle erosion is expected. Although it is the most appropriate electromagnetic testing solution for wall loss evaluation of thick carbon steel tubes.