Elevated-Temperature (600 exp 0 F), Manual Contact Ultrasonic Examination

摘要

Manual contact ultrasonic examination at temperatures above 250 exp 0 F has not been successful in providing meaningful results. Sensitivity of standard transducers degrades rapidly at 250 exp 0 F and above. It has been demonstrated that by using standard transducers and commercially available wedges and couplants in combination with a couplant/cooler system, manual contact ultrasonic examination can be performed at 600 exp 0 F for an essentially 100% duty cycle in conformance to the sensitivity requirement of the ASME B and PV Code.