The physical testing laboratory (PTL) defines the quality of metal and welding joints through various non-destructive testing (NDT) methods. The ultrasonic, radiographic, magnetic particle and penetrant testing methods of non-destructive testing are currently being used in our laboratory. Qualification and level improvement courses for NDT personnel are also conducted in the physical testing laboratory in accordance with SNT-TC-1A requirement. NTD personnel of level I and II are trained on ultrasonic, radiographic, magnetic particle and penetrant testing methods of non-destructive testing. The physical testing laboratory has been accredited by the Turkish Accreditation Agency as per the requirements of the international standard TS EN ISO/IEC 17025:2017 “General requirements for the competence of testing and calibration laboratories”. PTL has also been issued special permission (license) by the Ministry of Emergency Situations of the Azerbaijan Republic. All the devices and equipment in the physical testing laboratory are calibrated annually at the State Committee for Standardization, Metrology and Patent of the Azerbaijan Republic.