The current state of the foreign and native practice of the methods of quantitative risk assessment is considered, their qualitative differences are shown. Substantiation of the conducted verification is presented for the objective to confirm the adequacy of the approaches used in TOXI + Risk 5 software package.
Verification of methods is conducted with regards to the consequences assessment of the «fire ball» and the pool fire formation, which are used in Russia at calculating fire risk and accident risk by comparing the results of the calculations with the published source data from the field experiments conducted at the end of the 20th century, including: a number of experiments with the destruction of the tank containing different amount of the liquefied natural gas, accompanied by the Boiling Liquid Expanding Vapor Explosion (BLEVE) and the «Fire ball»; a number of experiments with the formation of the «Fire ball» as a result of an explosion of the explosive charge in the vessel with gasoline, kerosene and diesel fuel; a number of experiments with the pool fire of the kerosene on the surface of the water basin; a number of experiments «Phoenix» with pool fire of the liquefied natural gas on the water surface; a number of the experiments on the China Lake with the pool fire of liquefied natural gas.
Satisfactory agreement of the calculated and experimental data for practically all the experiments listed is shown.
The need is shown regarding the improvement of the methods for modeling the pool fire with regard to taking into account the spread of the pool fire along the terrain relief, as well as the possibility of specifying an arbitrary shape of the radiation surface.
To increase confidence in the methods of modeling physical processes used in the native regulatory methodological documents, when published, it is proposed to place in the open access the appropriate reports on verification of these methods, including references to primary sources of the mathematical models and the results of comparison with experimental data.
A.A. Agapov, Cand. Sci. (Eng.), Director of the Computational Analysis Center А.S. Sofyin, Cand. Sci. (Eng.), Department Head S.Kh. Zainetdinov, Junior Researcher V.V. Bannikov, Junior Researcher, email@example.com STC «Industrial Center» CJSC, Moscow, Russia
1. General rules of explosion safety for explosion and fire hazardous chemical, petrochemical and oil refining plants: Federal norms and rules in the field of industrial safety. 3-e izd., ispr. i dop. Ser. 09. Iss. 37. Moscow: ZAO NTTs PB, 2018. 132 p. (In Russ.).
2. Technical regulations on fire safety requirements: Federal Law of July 22, 2008 № 123-FZ. Ser. 19. Iss. 1. Moscow: ZAO NTTs PB, 2017. 192 p. (In Russ.).
3. Witlox H.W.M., Harper M., Pitblado R. Validation of PHAST Dispersion Model as Required for USA LNG Siting Applications. Chemical Engineering Transactions. 2013. Vol. 31.
4. McGrattan K., Hostikka S., McDermott R., Floyd J., Weinschenk C., Overholt K. Fire Dymanics Simulator. Technical Reference Guide. Volume 3: Validation. Available at: https://www.fse-italia.eu/PDF/ManualiFDS/FDS_Validation_Guide.pdf (accessed: July 03, 2018).
5. Agapov A.A., Agapova E.A. Certification and verification of the software. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2015. № 4. pp. 58–60. (In Russ.).
6. Abramov L.V., Bakhmetev A.M., Bylov I.A., Vasyuchenkov A.A. Development and verification of the software package for probabilistic analysis of nuclear installations safety in the area of design «Proryv». Izvestiya vysshikh uchebnykh zavedeniy. Yadernaya energetika = News of Higher Educational Institutions. Nuclear Energy. 2016. № 1. pp. 5–12. (In Russ.).
7. Development and verification of the condensation model for CFD calculations of the problems of hydrogen safety for nuclear power plants. Izvestiya rossiyskoy akademii nauk. Energetika = News of the Russian Academy of Sciences. Power Engineering. 2014. № 4. pp. 123–141. (In Russ.).
8. On the Introduction of Changes to Article 26 of the Federal Law «On the Use of Nuclear Energy» and the acknowledgment of certain provisions of the legislative acts of the Russian Federation as invalid: Federal Law of May 23, 2018 № 118-FZ. Available at: http://docs.cntd.ru/document/557485199 (accessed: July 03, 2018). (In Russ.).
9. Agapov A.A., Bannikov V.V., Degtyareva E.A., Sumskoy S.I. Database of full-scale experiments for verification of the mathematical models for dispersion of «heavy» gas clouds. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2018. № 6. pp. 35–44. (In Russ.).
10. Method for identification of the estimated fire risk values at the production facilities. Ser. 19. Iss. 2. Pt. 4. Moscow: ZAO NTTs PB, 2016. pp. 112–192. (In Russ.).
11. GOST R 12.3.047—2012. Occupational safety standards system (OSSS). Fire safety of the technological processes. General requirements. Methods of control. Available at: http://docs.cntd.ru/document/1200103505 (accessed: July 03, 2018). (In Russ.).
12. Bosch Van Den C.J.H., Weterings R.A.P.M. Methods for Calculation of physical effects — due to releases of hazardous materials (liquids and gases): Yellow Book. Available at: http://content.publicatiereeksgevaarlijkestoffen.nl/documents/PGS2/PGS2-1997-v0.1-physical-effects.pdf (accessed: July 03, 2018).
13. Zinoveva O.M., Mastryukov B.S., Merkulova A.M., Ovchinnikova T.I., Seryanina A.V. Effect of the wind speed on affecting factors of the pool fire. Problemy bezopasnosti i chrezvychaynykh situatsiy = Problems of Safety and Emergency Situations. 2017. № 1. pp. 13–19. (In Russ.).
14. Thomas P.H. The Size of Flames from Natural Fires. Available at: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.369.5324&rep=rep1&type=pdf (accessed: July 03, 2018).
15. Venart J.E.S. Boiling Liquid Expanding Vapor Explosions (BLEVE); Possible Failure Mechanisms and Their Consequences. Available at: https://www.researchgate.net/publication/286746489_Boiling_liquid_expanding_vapour_explosions_BLEVE_Possible_failure_mechanisms_and_their_consequences (accessed: July 03, 2018).
16. Roberts T., Gosse A., Hawksworth S. Thermal Radiation from Fireballs on Failure of Liquefied Petroleum Gas Storage Vessels. Symposium Series № 147. Available at: https://www.sciencedirect.com/science/article/pii/S0957582000708706 (accessed: July 03, 2018).
17. Dorofeev S.B., Sidorov V.P., Efimenko A.A. Fireballs from Deflagration and Detonation of Heterogeneous Fuel-rich Clouds. Fire Safety Journal. 1995. Vol. 25. pp. 323–336.
18. Yamaguchi T., Wakasa K. Oil Pool Fire Experiment. Available at: http://iafss.org/publications/fss/1/911/view/fss_1-911.pdf (accessed: July 03, 2018).
19. Blanchat T., Helmick P., Jensen R., Luketa A., Deola R., Suo-Anttila J., Mercier J., Miller T., Ricks A., Simpson R., Demosthenous B., Tieszen S., Hightower M. The Phoenix Series Large Scale LNG Pool Fire Experiments. Available at: https://prod.sandia.gov/techlib-noauth/access-control.cgi/2010/108676.pdf (accessed: July 03, 2018).
20. Mudan K.S. Hydrocarbon Pool and Vapour Fire Data Analysis. USDOE Report DE-AC01-83EP16008, 1984. Available at: https://ntrl.ntis.gov/NTRL/ (accessed: July 03, 2018).