Ground-based laser scanning is a modern technology that allows you to obtain automatically information about the spatial position of a large number of points belonging to the surface of the object being shot. In the oil and gas industry, ground-based laser scanning has shown its high efficiency in the process of measuring the geometric parameters of reservoirs for storing oil and oil products. For the full use of this technology today a number of laser scanning techniques for tanks have been developed and indicated in the regulatory documentation of the Russian Federation. At the same time, these methods have some drawbacks that lead to problem situations when it is necessary to conduct laser scanning of tanks in difficult and / or cramped conditions, which are especially typical for tank parks of marine terminals. In addition, these methods do not allow a flexible search for the optimal layout of scanner stations in the presence of requirements for the error of the measurement results. To eliminate the disadvantages inherent in current methods, the authors developed a simple mathematical apparatus that allows to develop a layout of the scanner stations and determine the appropriate boundaries of the scanned sections of the tank surface within the presence of a significant number of structures that impede the direct visibility of the scanned surface of the tank, and when performing work in cramped conditions without the need for complex calculations. In addition mathematical apparatus makes possible to conduct a flexible search for the optimal layout of the scanner stations in the presence of specific requirements for the permissible measurement error during laser scanning of the tank and to determine the measurement error for the selected layout of the scanner stations.
References
1. GOST R 58622-2019. Magistral'nyy truboprovodnyy transport nefti i nefteproduktov. Metodika otsenki prochnosti, ustoychivosti i dolgovechnosti rezervuara vertikal'nogo stal'nogo (Trunk pipeline transport of oil and oK products. Methods of assessing the strength, stability and durability of vertical sleei tank), http://docs.cntd.ru/document/437243880
2. RD-23.020.00-KTN-017-15. Magistral'nyy truboprovodnyy transport nefti i nefteproduktov. Lazernoe skanirovanie rezervuarov. Obshchie polozheniya (The main pipeline transport of oil and oil products. Laser scanning of tanks. General Provisions).
3. Seredovich V.A., Komissarov A.V., Shirokova D.V., Nazemnoe lazernoe skanirovanie (Ground laser scanning), Novosibirsk: SSUGT Publ., 2009, 261 p.
4. Bol'shakov V.D., Markuze Yu.I., Praktikum po teorii matematicheskoy obrabotki geodezicheskikh izmereniy (Workshop on the theory of mathematical processing of geodetic measurements), Moscow: Nedra Publ., 1984, 345 p.
5. Gorban' N.N., Vasil'ev G.G., Sal'nikov A.P., Accounting actual geometric shape of the tank shell when evaluating its fatigue life (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2018, no. 8, pp. 75–79.
6. Vasil'ev G.G., Katanov A.A., Likhovtsev M.V. et al., Work performance on 3-d laser scanning of the vertical stock tank with pontoon (VSTP) 20000 (In Russ.), Nauka i tehnologii truboprovodnogo transporta nefti i nefteproduktov = Science & Technologies: Oil and Oil Products Pipeline Transportation, 2015, no. 1 (17), pp. 54–59.
7. Vasil'ev G.G., Katanov A.A., Likhovtsev M.V. et al., Analysis of the three-dimensional laser scanning application on the objects of JSC "Transneft" (In Russ.), Nauka i tehnologii truboprovodnogo transporta nefti i nefteproduktov = Science & Technologies: Oil and Oil Products Pipeline Transportation, 2015, no. 2 (18), pp. 48–55.
8. Vasil'ev G.G., Leonovich I.A., Sal'nikov A.P., Use of terrestrial laser scanning for assessment of tank aluminum roofs stress-strain state (In Russ.), Bezopasnost' truda v promyshlennosti, 2017, no. 10, pp. 11–17.
9. Katanov A.A., Likhovtsev M.V., Bushnev D.A., An evaluation of additional criteria for assessing the condition of oil terminal tanks with the AIM of extending safe service life, Part 1, Pipeline science and technology, 2018, no. 3, pp. 233–235.
10. Katanov A.A., Likhovtsev M.V., Bushnev D.A., An evaluation of additional criteria for assessing the condition of oil terminal tanks with the AIM of extending safe service life, Part 2, Pipeline science and technology, 2018, no. 4, pp. 295–302.
11. Safety Guide "Recommendations for the technical diagnosis of welded vertical cylindrical tanks for oil and oil products", URL: http://docs.cntd.ru/document/1200133803
12. Sal'nikov A.P., Otsenka napryazhenno-deformirovannogo sostoyaniya rezervuarov po rezul'tatam nazemnogo lazernogo skanirovaniya (Estimation of stress-strain state of reservoirs based on the results of ground-based laser scanning): thesis of candidate of technical science, Moscow, 2016.
