2020 №02 (07) DOI of Article
2020 №02 (01)

Technical Diagnostics and Non-Destructive Testing 2020 #02
Technical Diagnostics and Non-Destructive Testing #2, 2020, pp. 49-57

Investigation of the influence of risk sources on technical safety of welded structures in operation with application of nondestructive testing and technical diagnostics

Yu.K. Bondarenko, O.V. Kovalchuk
E.O. Paton Electric Welding Institute of NASU, 11 Kazymyr Malevych, Kyiv, 03150. E-mail: office@paton.kiev.ua

In keeping with mandatory requirements of technical procedures to technical documents for critical products of welding fabrication, the technical documentation should allow assessment of product compliance with regulatory requirements and should include a description of performance and results of proper analysis and assessment of risk (risks). At present there is no reliable method for assessing the welded structure risk. The paper identifies the features of risk occurrence during the product life cycle. The algorithm of occurrence of components of risk in welded structure operation, which is the aggregate of both the risks connected with deviations of the processes of design, manufacture, and operation (in other words, those connected with the processes of product life cycle), and the risks associated with dangers, which arise from impacts on the structures and the probability of the structure operation outside its application limits. It is noted that the risk in operation is the probability that the structure will reach the limit state during the specified period of operation. The limit states are divided into two groups. The first group includes limit states, the transition through which leads to complete unsuitability of the object. The second group includes those that complicate the normal operation of the object or shorten its service life, compared to the specified term. During operation, the welded metal building structure is exposed, first of all, to mechanical and corrosion impacts. References to the theory and formulas are given that determine the probabilities of a metal structure failure. It is recommended to use the Bayesian formula to calculate the total value of operational risk. 17 Ref., 8 Tabl., 4 Fig.
Keywords: risk, operational risk, risk management, probability of danger occurrence, welded structure, technical safety

Received: 07.10. 2019


1. (2015) Law of Ukraine of 15.01.2015, No. 124-VIII: On technical regulations and сonformity assessment [in Ukrainian].
2. (2016) Resolution of the Cabinet of Ministers of Ukraine No. 95 of January 2016: About approval of the modules of conformity assessment used for development of the procedures for conformity assessment and rules for application of conformity assessment modules [in Ukrainian].
3. (2010) Law of Ukraine of 02.12.2010, No. 2736-VI: On general safety of non-food products [in Ukrainian].
4. Bondarenko, Yu.K., Kovalchuk, O.V. (2017) Evaluation of risk of welding structures service using monitoring of processes of the quality control system and testing using NT and TD methods. Tekh. Diagnost. i Nerazruch. Kontrol, 3, 56-62 [in Ukrainian]. https://doi.org/10.15407/tdnk2017.03.07
5. Bondarenko, Yu.K., Kovalchuk, O.V. (2018) Risk identification in fabrication of welded structures in order to introduce risk-management at the enterprise. Ibid., 3, 47-57 [in Ukrainian]. https://doi.org/10.15407/tdnk2018.03.06
6. Bondarenko, Yu.K., Kovalchuk, O.V. (2018) Analysis and study of management of the risk affecting the technological process of welding in production, in order to increase the viability of steel structures by danger indicators. Svarshchik, 4, 29–40 [in Russian].
7. DSTU ISO Guide 73:2013 (ISO Guide 73:2009): Risk management. Vocabulary.
8. DSTU ISO 31000:2014 (ISO 31000:2009, IDT): Risk management. Principles and guidelines.
9. DSTU ІЕС/ISO 31010:2013 (ІЕС/ISO 31010:2009, IDT): Risk management. Risk assessment techniques.
10. DSTU ISO 9001:2015: Quality management systems. Guidelines and vocabulary.
11. DSTU 3974-2000: System of product development and launching into manufacture. Procedures of experimental and design works. Basic principles [in Ukrainian].
12. DSTU 8634:2016: System of product development and launching into manufacture. Guidelines of inedible product development and launching into manufacture [in Ukrainian].
13. DBN V 1.2-14:2018: System of ensuring the reliability and safety of building objects. General principles for reliability and constructive safety ensuring of buildings and civil engineering works. Valid from 01.01.2019 [in Ukrainian].
14. Mankovska, E., Skoropad, P., Semenystyi, A. (2010) Corrosion resistance of metal amorphous columns and metrological reliability of temperature transducers on their base. Vymiryuvalna Tekhnika ta Metrologiya, 71, 98–102 [in Ukrainian].
15. http://ena.lp.edu.ua/bitstream/ntb/6607/1/19.pdf
16. Bidyuk, P.I., Terentiev, O.M., Konovalyuk, M.M. (2010) Bayesian networks in the technologies of intelligent analysis of data. Iskustvennyi Intellekt, 2, 104–113 [in Ukrainian].
17. Torop, V.M. (2005) Probabilistic risk-analysis of operation of pipeline systems of tanks and pressure vessels. Information 2: Method of assessment of serviceabilityof structural elements by limited statistical data. Problemy Prochnosti, 3, 96–103 [in Ukrainian].

Advertising in this issue: