Makri, H. 2019. Experimental Investigations to Evaluate the Validity and Performance of NDT Procedures for In-Service Inspections. Annals of “Dunarea de Jos” University of Galati. Fascicle XII, Welding Equipment and Technology. 30, (Dec. 2019), 59-66. DOI:https://doi.org/https://doi.org/10.35219/awet.2019.08.