Yu.A. Bondin, Lead Engineer, iury.bondin@urfu.ru S.V. Bausov, Chief Mechanical Engineer — Department Head of Chief Mechanical Engineer OOO Gazprom transgaz Yekaterinburg, Yekaterinburg, Russia S.V. Ovcharov, Cand. Sci. (Eng.), Laboratory Head OOO Gazprom VNIIGAZ, Moscow, Russia
Regulatory and methodological documents developed by Rostechnadzor and PAO Gazprom considering the experience of the world best practices for ensuring industrial safety, preventing accidents and work injuries serve as a basis for implementation of the up-to-date and innovative methods for planning diagnostics, maintenance and repair of linear part of the main gas pipelines.
In accordance with the regulatory-methodical documents, the long-term programs for diagnostics, maintenance and repair of the linear part of the main gas pipelines should be based on the quantitative assessment of not only the reliability indicators but also the technogenic risk of sections of the main gas pipelines.
According to the normative and methodological documents the quantitative risk analysis includes the assessment of the expected frequency of accidents, which consists in identifying for each source of hazard in the scope of hazardous production facility the frequency of potential accidents occurrence.
The methods of expert evaluation of the expected frequency of accidents at the gas pipeline section is aimed at predicting the accident rate (identifying the expected specific frequency of accidents) at the arbitrary section of the gas pipeline of the finite length, which is characterized by the specific set of factors and operating conditions.
General provisions formulated by the specialists of OOO Gazprom transgaz Yekaterinburg are presented on the basis of the approbation of the methodology of PAO Gazprom for assessment of accidents frequency at the sections of gas pipeline. When identifying the expected specific frequency of accidents, the split of the gas pipeline per sections is proposed to be made on each of the factors of influence separately considering its importance and the nature of change along the pipeline route.
As a required condition for obtaining adequate estimates of the expected specific frequency of accidents and the risk for the analyzed pipeline, the condition is formulated concerning the permanency of the expected frequency of accidents calculated for the entire pipeline route on each separate factor of influence regardless the way of splitting the route into sections.
The presented provisions can be applied to any hazardous production facilities having large linear length.
1. Methodological basis for conducting hazard analysis and risk assessment of accidents at hazardous production facilities: Rosteсhnadzor order of April 11, 2016 № 144. Available at: http://docs.cntd.ru/document/1200133801 (accessed: August 1, 2018). (In Russ.).
2. Safety rules for hazardous production facilities of the main pipelines: Rostechnadzor order of November 6, 2013 № 520. Available at: http://docs.cntd.ru/ document/499058128 (accessed: August 1, 2018). (In Russ.).
3. Instruction on technical diagnostics of the underground steel gas pipelines: Order of Rostechnadzor of February 6, 2017, № 47. Available at: http://docs.cntd.ru/ document/456041817 (accessed: August 1, 2018). (In Russ.).
4. R Gazprom 2-2.3-691—2013. Methods of the formation of programs for technical diagnostics and repair of the objects of linear part of the main gas pipelines of ESG OAO Gazprom. Moscow: OAO «Gazprom», 2014. 111 p. (In Russ.).
5. R Gazprom 2-2.3-620—2011. Methods for calculating reliability indicators at the operation of the objects of the linear part of the main gas pipelines of the single gas supply system of OAO Gazprom. Moscow: OAO «Gazprom», 2014. 36 p. (In Russ.).
6. STO Gazprom 2-2.3-351—2009. Methodical guidelines for conducting risk analysis for hazardous production facilities of the objects of gas transportation enterprises of OAO Gazprom. Moscow: OAO «Gazprom», 2009. 377 p. (In Russ.).
7. Recommendations for considering the effect of technical and technological, natural and climatic and other factors when forecasting accident rate at the main gas pipelines of OAO Gazprom. Moscow: OAO «Gazprom», 2007. 118 p. (In Russ.).
8. Muhlbauer W.K. Pipeline Risk Management Manual: Ideas, Techniques, and Resources. Elsevier, 2004. 415 p.
9. Methoden voor het bepalen van mogelijke schade. Available at: http://www. publicatiereeksgevaarlijkestoffen.nl/publicaties/PGS1.html (accessed: August 1, 2018).
10. Methods for the calculation of physical effects. Available at: http://www. publicatiereeksgevaarlijkestoffen.nl/publicaties/PGS2.html (accessed: August 1, 2018).
11. Guidelines for quantitative risk assessmen. Available at: http://www. publicatiereeksgevaarlijkestoffen.nl/publicaties/PGS3.html (accessed: August 1, 2018).
12. Methods for determining and processing probabilities. Available at: http://www. publicatiereeksgevaarlijkestoffen.nl/publicaties/PGS4.html (accessed: August 1, 2018).
13. Ovcharov S.V., Safonov V.S. Score-factor method for estimating the expected frequency of accidents at the gas pipelines is the new interpretation of the new approach. Problemy sistemnoy nadezhnosti i bezopasnosti transporta gaza: sb. nauch. tr. (Problems of System Reliability and Safety of Gas Transport: Collection of Scientific Papers). Moscow: OOO «VNIIGAZ», 2008. pp. 240–263. (In Russ.).
14. Ovcharov S.V. On some methods for estimating frequency of accidents at the main pipelines when calculating fire risk. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2011. № 2. pp. 61–69. (In Russ.).
15. Vlasova L.V., Gamera Yu.V., Ovcharov S.V., Petrova Yu.Yu. Methodical approaches to accidents risk assessment on the linear part of the main gas pipelines caused by hazardous natural processes. Vesti gazovoy nauki = News of Gas Science. 2017. № 1 (29). pp. 171–178. (In Russ.).
16. Bondin Yu.A. Approbation of the methods of quantitative assessment of the technogenic risks during operation of the linear part of the main gas pipelines (LP MG) for determination of the priority of the withdrawal of sites for repair. Sb. tez. dokl. XVI nauch.-tekhn. konf. molodykh rukovoditeley i spetsialistov OOO «Gazprom transgaz Ekaterinburg» (Collection of the Thesis Report of XVI Scientific and Technical Conference of the Young Managers and Specialists of OOO Gazprom Transgaz Yekaterinburg). Ekaterinburg: OOO «Gazprom transgaz Ekaterinburg», 2015. pp. 53–54. (In Russ.).
17. Bondin Yu.A., Zorin A.A. Introduction of the methods for quantitative assessment of the technogenic risks for the objects of OOO Gazprom transgaz Yekaterinburg. Sb. tez. dokl. XVII otraslevoy nauch.-tekhn. konf. molodykh rukovoditeley i spetsialistov OOO «Gazprom transgaz Ekaterinburg» (Collection of the Thesis Report of XVII Branch Scientific and Technical Conference of the Young Managers and Specialists of OOO Gazprom Transgaz Yekaterinburg). Ekaterinburg: OOO «Gazprom transgaz Ekaterinburg», 2016. pp. 19–20. (In Russ.).
18. Bondin Yu.A., Spirin Yu.A., Debenko D.V. Quantitative assessment of technogenic risks for the main gas pipelines in the environment of the geoinformation system ARCGIS DESKTOP. Sistemy avtomatizatsii v obrazovanii, nauke i proizvodstve AS’2017: tr. XI Vseros. nauch.-prakt. konf. (s mezhdunar. uchastiyem) (Automation Systems in Education, Science and Production AS'2017: Proceedings of XI All-Russian Scientific and Practical Conference (with International Participation). Novokuznetsk: SibGIU, 2017. pp. 78–81. (In Russ.).
19. Kuimov S.N., Bausov S.V., Istomin A.I., Korosteleva T.K., Podolskaya V.V. Informational and analytical support of control processes of technical condition of gas pipelines subject to stress corrosion cracking. Vesti gazovoy nauki = News of Gas Science. 2016. № 3 (27). pp. 131–188. (In Russ.).
20. Kokh R. Principle 80/20. Moscow: Eksmo, 2012. 448 p. (In Russ.).
21. Kokh R. Pareto principle or principle 80/20. Obshchaya i prikladnaya tsenologiya = General and Applied Cenology. 2007. №. 4. pp. 20–24. (In Russ.).
22. In-line Diagnostic Report № ff-16.39444761.151012p-ru of October 12, 2015. Moscow: ZAO «NPO «Spetsneftegaz», 2015. 2919 p. (In Russ.).
