New methods and means of multi-parameter diagnostics of equipment and structures of long-term exposure

Work number - M 54 AWARDED

Authors:

KarpashM.O., DotsenkoY.R., TatsakovychN.L., RybitskyI.V.

Submitted by Ivano-Frankivsk National Technical University of Oil and Gas under Ministry of Education and Science of Ukraine.

The work addresses important scientific and technical problem - new integrated approaches for determination of physical, mechanical and geometrical characteristics of equipment and structures with long-term exposure using non-destructive methods. This was achieved through development of new methods for measurement of compatible standardized properties of structural steels (thermal conductivity, electrical resistivity, electromagnetic parameters), development a new method for processing of defectoscopic information collected via acoustic method for contactless measurement of the thickness of the equipment and method for identification of types of operational and manufacturing defects. Designed for developed technologies embodiment technical means and developed methodological and information provision determine the characteristics of the evaluated materials and their degradation level.

Scientific principles and methodology of complex NDT of parameters which determine technical conditions of equipment and structures were developed – this allowed to reliably detect various defects at high noise levels; method for defect classification based on its origin (operational or production) which may be utilized for pigging of underground pipelines; non-destructive method of yield strength and Charpy toughness in-situ determination. 

Developed and implemented new technical means, technologies and normative documents which implement the approach of multi-parameter diagnostics and allow to perform in-situ evaluation of important features (yield/tensile strength, Charpy toughness) and residual thickness (corrosive damage) of oil and gas structures. Comparison with national and abroad achievements demonstrate the biggest advantage gained – utilization of the artificial neural network technology which allowed to simplify the NDT technical means, increase accuracy and extend application scope.

World level of the developments is confirmed by developed normative documents, harmonized with international and European ones, presentations at various international conferences, wide participation in the project under INOGATE, TEMPUS, FP7 and ENPI CBC programmes, successful cooperation with international, European and interstate standardization committees (ISO/TC67, CEN/TC12, EASC/ITC 523), Society of Petroleum Engineers. 

Economic effect gained from the implementation of the work outcomes is being reached due to accurate detection of improper or dangerous structures, their commissioning, full technical life utilization and reductions of costs related with brake-down and accident mitigation.

Researchoutcomesofthework reflected in 3 monographs, 59scientific articles and 61conference proceedings. Novelty and competitiveness of technical solutions guaranteed by 7patents.

Total quantity of publications – 250.