Transportation Of Petroleum Products Research Articles

СРАВНИТЕЛЬНЫЙ АНАЛИЗ ОРГАНИЗАЦИОННО-ТЕХНИЧЕСКИХ СРЕДСТВ ЗАЩИТЫ ОКРУЖАЮЩЕЙ СРЕДЫ ПРИ ЖЕЛЕЗНОДОРОЖНОЙ ТРАНСПОРТИРОВКЕ НЕФТЕПРОДУКТОВ

There are given results of a comparative analysis of existing organizational and technical means to protect the environment from the negative effects of transporting petroleum products by rail. Each of the transportation stages is considered and based on the results obtained reasonable conclusions are drawn about the most problematic stage in terms of the effectiveness of existing environmental protection measures. The study objective is to analyze the effectiveness of existing organizational and technical means to protect the environment from polluting effects of railway transport with petroleum products. The relevance of the work is ensured by Decrees of the President of the Russian Federation "On National Development Goals of the Russian Federation for the Period up to 2030 and for the Future up to 2036" dated 05/07/2024 No. 309 in terms of reducing emissions of dangerous pollutants and preventing environmental pollution in cities and towns. Scientific novelty is in the fact that for the first time the problem of low efficiency of environmental protection provided by technical means operating at the stage of unloading oil cargoes is highlighted. Based on the results obtained during the analysis of environmental protection from the polluting effects during transportation of oil-bulk cargoes, a conclusion is made about the insufficient level of technical equipment of unloading petroleum products, expressed in the absence of a preventive safety complex.

Soft sensor development for mixed oil interface tracking in multi-product pipelines based on knowledge-informed semi-supervised Variational Bayesian Gaussian mixture regression

Sequential transportation of petroleum products in multi-product pipelines often lead to occurrence of mixed oil. The prediction of the arrival time of the mixed oil interface constitutes crucial data for the scheduling of treatment actions. However, existing soft sensors, like Gaussian mixture regression (GMR), may face challenges due to limited size of labeled data and numerical issues, leading to performance degradation or even training failure. To tackle these issues, we propose a Knowledge-informed Semi-supervised Variational Bayesian Gaussian mixture model (KI-SSVBGMR). It employs a semi-supervised fully Bayesian structure designed to address the constraints arising from the potential matrix singularity issues and shortage of labeled samples. Subsequently, we determine the crucial regression variable and establish its prior distribution based on industrial knowledge to improve model generalization. Finally, a learning procedure grounded in the Variational Inference algorithm is developed to train the KI-SSVBGMR. Through case studies, including numerical examples and real industrial datasets, our method demonstrates the effectiveness and reliability of the proposed soft sensor development method. This research can aid operators in improving mixed oil section management and provides valuable insights for integrating machine learning with industrial knowledge.

APPLICATION OF TRANSPORTATION MODEL TO SOLVE TANKERS’ – ROUTING PROBLEM

The problem of selecting minimum cost routes for tankers in distributing petroleum products and satisfying customers’ requirement without scarcity in Nigeria remains a huge challenge to major marketers in the oil industries. The cost of transporting petroleum products from sources to destinations matters a lot to oil marketers because of the direct impact it has on their profits. The means of distributing petroleum products from refineries to depots or filling stations are tankers’ routing and pipelines. In this research, we extended some existing tankers’-routing models in literature which use a discrete integer programming approach to determine efficient and effective distribution of petroleum products. Consequently, we developed a new transportation linear programming algorithm to determine minimum cost routes in the delivery of petroleum product from their supply centers (refinery) to demand centers (filling stations). The significance of the application we adopted in this research lies in the modified distribution approach to tackle the complexity involved when transportation problems are formulated as linear programming problem having several variables and constraints. In this research, we formulate a new version of transportation model of tankers’ routing with the aim of reducing the cost of petroleum products delivery. The proposed transportation linear programming model was applied to a numerical example alongside other existing transportation algorithms. It is observed that, the new algorithm produced approximately the same total cost obtained by using other existing algorithms

Disaster Risk Reduction Initiatives in Road Transportation of Petroleum Products

Disaster Risk Reduction Initiatives in Road Transportation of Petroleum Products

Foundation Treatment, Reinforcement and Design Optimization for Oil Storage Tanks at TAZAMA Pipelines Limited (Ndola, Copperbelt Province, Zambia)

Addressing foundation soil consolidation and subsoil treatment/reinforcement pertaining to oil storage tanks is essential for ensuring their long-term structural stability and minimizing risks associated with ground movement. This study will specifically revolve around investigating Foundation Treatment, Reinforcement and Design Optimization for Oil Storage Tanks at TAZAMA Pipelines Limited Ndola Site, (a key player in the transportation of petroleum products between Zambia and Tanzania). Key content of article: - Through systematic analysis of survey data of the target area, the engineering characteristics and distribution patterns of soft soil foundations in site area was analysed and appropriate foundation treatment and reinforcement methods of oil storage tanks within the area was taken into consideration.- Demonstrated significance of applying chosen method of optimization to address the soil consolidation issues; i.e. presented through level for level analysis of application model.- Considered a 50,000m3 floating roof oil storage tank foundation for soil consolidation optimization, analysing practicality and feasibility of study.The main author of this article served as a Civil Engineering Intern at TAZAMA Pipelines Limited.

INVESTIGATION OF OIL PIPELINE EQUIPMENT FAILURE-FREE PERFORMANCE DEPENDING ON INTRODUCED QUALITY MANAGEMENT MECHANISMS

The industry system for assessing the conformity of the main types of products used by Transneft has been operating since 2004 and is implemented on the basis of the Research Institute of Pipeline Transport of Transneft Research Institute. Conformity assessment shall be carried out for products of producers ensuring the technological processes of oil and petroleum products transportation and safety of facilities of oil trunk pipelines and petroleum product pipelines, including products operated under excess pressure of oil and petroleum products.As part of the implementation of this area of activity, the institute solves the following tasks:— expert examination of technical documentation of products;— participation in factory tests of products;— conducting tests of products on their own at the Research and Development Center of NII Transneft LLC (Ufa);— participation in the inspection of the production of products. In turn, Transneft has defined a list of the main types of products that are subject to mandatory conformity assessment and inclusion in the ORP Register, after which they are allowed to be used at Transneft’s hazardous production facilities, as well as developed its own industry regulatory documents of the type general technical requirements that take into account the uniqueness of the operating conditions of the equipment. Management of equipment reliability at different stages of the life cycle in an oil transportation enterprise represents a complex multilevel system of interrelated scientific, methodological and organizational and technical measures that directly or indirectly affect the reliability of equipment.Within the framework of the studies carried out by the specialists of Transneft Research Institute, more than thirty such measures were analyzed for direct or indirect impact on the reliability of equipment, including incoming control of equipment, factory, bench, resource, laboratory tests, production inspections, technical supervision of manufacturing, construction control of installation, diagnostics, maintenance, repairs, development of industry standards and other procedures. The variety of such processes makes up the system reliability of hazardous production facilities for pipeline transport of oil and petroleum products. The heterogeneity and sometimes redundancy of such processes negatively affect both operating organizations and equipment manufacturers.

Human Factors Contributing to Accidents and Disasters in Road Transport of Petroleum Products in Kenya

Over the past few decades, Africa has witnessed enormous increase in the number of accidents take occur during road transport of petroleum products. Some of these accidents escalated into disasters because of release of products, with subsequent explosion and fire, resulting in several injuries and fatalities. With the Sendai Framework for Disaster Risk Reduction (DRR), the focus is on disaster risk reduction, rather than disaster response. This paper identifies human factors as a major cause of road transport accidents that lead to disasters when petroleum products are released. The study area was Kenya, but the findings are applicable across the continent. The Tripod Beta methodology, an incident investigation tool, was applied to analyse some of the disasters that had occurred in the downstream petroleum sub-sector in Kenya. The analysis identified root causes of accidents and highlighted the need to focus on tanker drivers as the key stakeholders for risk reduction. The root causes were applied in the development of the questionnaire that was used in a survey. The survey was carried out using random sampling, with a sample size of 391 tanker drivers. The study concluded that tanker drivers in the age group of 30-40 years, with 6-10 years’ driving experience and minimum educational level of secondary school, displayed the best performance in prevention of accidents and spills that could lead to disasters. Tanker drivers who meet these criteria should be the target of recruitment by transporters, followed by structured safety training, to achieve Goal Zero: no accident, no spill, and no disaster in the industry.

A Data Driven Machine Learning Model for Fault Detection in Industrial Pipelines

Industry 4.0 has marked a paradigm shift in the way production and manufacturing operates. Process monitoring and fault diagnosis are important for the safety and reliability of industrial processes especially for smart manufacturing. As a data-driven process monitoring methodology, multivariate statistical analysis techniques, such machine learning based approaches have become extremely critical for automation. Pipelines carrying oil and gas are essential for a nation's economic sustainability. In order to maximise their function and prevent product losses during the transportation of petroleum products, they must be carefully inspected. However, they are susceptible to failure, which could have negative effects on the environment, financial loss, and safety. Therefore, evaluating the pipe's state and quality would be crucial. Despite being time-consuming and expensive, a number of inspection procedures are used to assure the safety of pipelines. However, due to the time consumption and error prone nature of manual inspection, data driven models are being explored for forecasting failure in oil and gas pipelines. The proposed work presents a Bayesian Regularized classifier for forecasting failure and the results show that the proposed approach outperforms the existing baseline techniques in terms of forecasting accuracy. Keywords:- Industry 4.0, oil pipelines; failure forecasting, Bayesian Regularization, Confusion Matrix, Classification Accuracy.

Mathematical Model of Spreading Oil Pollution in Coastal Marine Systems

Introduction. The negative consequences that may arise due to an accidental oil spill are difficult to account for, since they disrupt many natural processes and relationships within the ecosystem of the reservoir. After an oil spill, a dense layer of oil film forms on the water surface quite quickly, preventing access to air and light (after a spill of one ton of oil, an oil slick about 10 mm thick forms on the surface of the reservoir after 10 minutes). As a result, the fauna and flora of the reservoir suffer. If the accident occurred in the coastal zone near a populated area, then the toxic effect is enhanced, because petroleum products in combination with various pollutants of human origin can form dangerous compounds. For high-risk areas (the main routes of transportation of petroleum products, places of their bunkering and unloading, etc.), it is necessary to predict various scenarios for the spread and transformation of oil pollution, taking into account their multifractional composition, turbulent diffusion and advective transport, destruction under the influence of natural factors. The aim of the work is to build a linearized non-stationary spatially heterogeneous mathematical model of transport and transformation of oil pollution, taking into account the above factors.Materials and Methods. The oil that has entered the aquatic environment is represented as a surface and suspended substance in the water column. Oil is subject to a variety of transformation processes: advection, gravitational spreading, emulsification, dispersion, dissolution, biodegradation, etc. The study of these processes and their forecasting, as a rule, requires the development of mathematical and software. In mathematical and numerical modeling, one should start from the system of Navier-Stokes equations and continuity equations, as well as introduce additional physical tolerances of the flow geometry, acceptable and justified in each case, as shown by world experience and objective analysis of the physical picture of processes. Mathematical modeling of the oil distribution process in coastal marine systems has been performed.Results. Mathematical oil distribution model has been created, taking into account its multifractional composition. It is assumed that oil fractions can be in water in dissolved or undissolved states. The modeling takes into account such physical characteristics of particles as density, acceleration of gravity, molar mass, etc. After the linearization of the problem under consideration, difference schemes using extended uniform grids were constructed.Discussion and Conclusion. Pollution caused by an oil spill in the aquatic environment occurs very quickly and is often very destructive. An important factor will be prompt response, which plays a crucial role in minimizing its negative consequences. Modeling of the oil spill process can be useful for determining the location and condition of oil at sea, conducting a risk analysis of the spread of the substance and developing measures to localize and eliminate pollution.

Energy-efficient means of transporting oil products to Ukraine during martial law

Carrying out transportation of oil products, there is a danger of having a negative impact on the environment - a leak of liquid can create an environmental problem for a certain area. Transportation of oil-containing cargoes to Ukraine, during martial law, is carried out by multimodal transport, namely, road, sea and rail modes of transport.As of June 2023, there are 14 border railway stations connecting Ukraine with five countries: Poland, Slovakia, Hungary, Romania and Moldova. International railway transshipment stations were studied, which allow oil products to be transshipped into tankers for further customs clearance and transportation to warehouses, civilian or military recipients. The distance of the transportation path is not always decisive in the matter of energy saving. Environmental friendliness and energy consumption during the transportation of petroleum products are also affected by the topography of the road, the landscape of the area where the roads pass, and the traffic on the roads with other vehicles.

Мониторинг загрязнения почвенного покрова нефтепродуктами и разработка способа его рекультивации

Introduction. Oil waste has a high degree of toxicity and poses a great danger to humans and to the natural environment as a whole. One of the most acute problems is the negative impact of oily waste. The negative impact of petroleum products on the soil can lead to irreversible changes in the chemical composition, physical biochemical and microbiological properties of the soil, which determine, among other things, its fertility. The main potential sources of soil pollution with oil and petroleum products include ground vehicles, oil storage facilities, oil refining enterprises, as well as transport transporting petroleum products. The study of the physico-chemical properties of ash and slag waste to reduce the anthropogenic load on the environment. In Kazakhstan, as a result of the production activities of a number of large oil-producing enterprises, huge amounts of oil-and-oil soils have accumulated, significantly polluting the environment. The areas of polluted lands continue to increase as a result of emergency oil spills. Therefore, on the territory of the Kumkol oil field, it is very relevant to conduct environmental monitoring of soil pollution and carry out reclamation measures to restore land fertility The purpose of the research. Environmental monitoring in the conditions of development of the Kumkol deposit and the development of an effective technology for the reclamation of contaminated lands through the use of highly effective biological products to reduce the anthropogenic load on the natural environment. Research materials. For the research, samples of smeared soils of various sites of the Kumkol deposit of the Kyzylorda region of Kazakhstan were used. Research methods. The choice of soil monitoring methods was carried out taking into account the available sources of pollution and types of soil pollution: chemical, biochemical, biochemical, microbiological, etc. The analysis of existing methods of ecological monitoring of soils shows that due to the high cost and technological complexity, the use of a number of them is limited. Therefore, an effective approach to determine the degree of contamination of soils with petroleum products is the use of bioindication and biotesting methods Research results and discussion. As a result of the environmental monitoring, the technology of recultivation of polluted lands was developed using a biological product obtained by composting rice husks with the help of aerobic and anaerobic soil microorganisms. The scientific novelty of the proposed method of recultivation of contaminated soils is confirmed by the patent of the Republic of Kazakhstan, which confirms the scientific and practical significance of the work. The results of the research can be useful in the reclamation of oil-contaminated lands in other regions and the restoration of their vegetation cover. Conclusion. The monitoring of soil pollution by oil and petroleum products shows that the main potential sources include ground transportation facilities, oil storage facilities, oil refineries and transport, which first brings petroleum products. The developed technology of biorecultivation, firstly, reduces the anthropogenic load on the soil surface due to the biodegradation of oil spills, and, secondly, at the same time, the disposal of spilled oil in the form of vermicompost is carried out. In the work, for the first time on the basis of the application of a new technology for the reclamation of contaminated land resources using a biological product obtained from waste of plant and food origin, a new approach to the problem of utilization of oil-contaminated soils and restoration of their fertility, with the production of vermicompost, is proposed. Suggestions for practical application. A new approach to the problem of utilization of oil-contaminated soils and restoration of their fertility, with the production of vermicompost, is proposed, which can be useful in solving environmental problems in other oil-producing regions of Kazakhstan.

Корпоративное волонтерство как инструмент внутренних и внешних коммуникаций организации

Nowadays, companies are actively introducing corporate volunteering programs at their enterprises. In this re-gard, there is a growing interest in this topic in scientific circles: there are more and more works devoted to the study of this phenomenon as a form of corporate social responsibility. However, more attention is often paid to the social and economic effects of corporate volunteering, and an equally important communication aspect remains undisclosed. This article is aimed at studying the phenomenon of corporate volunteering as a tool of corporate communications. It analyzes the image and reputation effects from the implementation of volunteer programs at Russian enterprises. The empirical basis of the analysis was the results of a study of the nature of information coverage of volunteer activities of a large regional pipeline company in the field of oil and petrole-um products transportation. Conclusion dwells upon the fact that corporate volunteering contributes to strength-ening the information presence of the organization and reinforcing the status of a socially responsible enter-prise.

Uplifting of anticorrosive coatings performance via TiO2/ZnO core–shell pigment for oil and gas pipelines protection

The objective of this study is to enhance the effectiveness of anticorrosive coatings applied to steel pipelines utilized for the transportation of petroleum products. However, these pipelines are susceptible to corrosion, necessitating the implementation of an economically viable protection system. Therefore, this research endeavors to introduce a novel pigment consisting of titanium dioxide/zinc oxide (TiO2/ZnO) core–shell structure. The pigment is designed to be incorporated into polymeric coating formulations and subsequently subjected to standard testing methods, including immersion tests, adhesion assessments, and electrochemical measurements. The pigment was synthesized and characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), and electron microscopy (SEM and TEM). Electrochemical impedance spectroscopy (EIS) was hired for observing the resistance and capacitance of the formulated coatings through immersion in corrosive medium (3.5% NaCl). The obtained results conveyed that the prepared core–shell pigment with its unique structure had strongly elevated the resistivity of the formulated coating, which enhanced its role in the protection of the pipeline wall from corrosion.

ACOUSTIC METHODS FOR MEASURING THE THICKNESS OF DEPOSITS ON THE INNER WALL OF PIPELINES

Wax deposits on the inner walls of pipelines and technological equipment are a serious problem in the petroleum industry. This is not a new problem and it appeared at the dawn of oil production, but it still remains relevant, especially today, when most of petroleum fields are moving to a late stage of their development. Wax deposits lead to complications in the transportation of petroleum products, which leads to economic losses, and deposits can also cause equipment failure.For timely planning and implementation of treatment activities, information on the current thickness of wax deposits is required. However, there is currently no simple and effective method for measuring thickness of deposits.The paper considers the existing acoustic methods for measuring the thickness of deposits: through-transmission method, echo-method andmethod based on attenuation of acoustic signal. Experimental studies were carried out to determine the applicability of the proposed methods. An analysis of the literature was carried out and we proposed a new method for measuring the thickness of wax deposits, based on the analysis parameters of frequency of natural vibrations of the pipeline wall.An experimental study and computer modeling have been carried out, confirming the existence of a relationship between the resonant frequency of the pipeline wall oscillations and the thickness of the deposits. This dependence can be used as the basis for a new device for measuring the thickness of wax deposits.

Efficient qualitative risk assessment of pipelines using relative risk score based on machine learning

Pipelines are observed one of the economic modes of transport for transporting oil, gas, and water between various locations. Most of the countries in the world transport petroleum and other flammable products through underground pipelines. The underground and aboveground pipelines are facing various damages due to corrosion, dents, and ruptures due to the environment and operational fluid conditions. The danger of leaks and accidents increases as a result of these damages. Pipelines must be evaluated on a regular basis to make sure they are fit for transmission. By evaluating the effects of damages and the possibility of catastrophic failures using a variety of techniques, pipeline integrity is controlled. Applying the relative risk scoring (RRS) technique, pipeline failures are predicted. One of the probabilistic techniques used to forecast risk based on an impartial assessment is machine learning. With different parameters like corrosion, leakage, materials, atmosphere, surface, earth-movements, above-ground and underground facilities, etc., the RRS method provides an accuracy of 97.5% in identifying the risk and gives a precise classification of risk, whether the pipeline has a high, medium, or low risk without any delay on the prediction compared with Naive Bayes, decision tree, support vector machine, and graph convolutional network.

DEVELOPMENT OF METHODOLOGY FOR DETERMINING
 TECHNOLOGICAL LOSSES OF OIL AND PETROLEUM PRODUCTS DURING TRANSPORTATION
 BY MAIN PIPELINE TRANSPORT

During technological operations for the transportation of oil and oil products, there are losses of pumped products.
 Historically, these losses were recorded in accordance with the norms of natural loss, which are determined
 empirically and do not have a clear scientific justification. The article presents a methodological approach
 to determining the level of technological losses of oil and oil products during technological operations of transportation
 by main pipeline transport. All technological losses are divided into two groups: losses during maintenance and repair
 of pipeline equipment; losses due to evaporation from storage equipment. For each of the groups, a reasonable method
 for calculating technological losses is proposed, taking into account the peculiarities of equipment maintenance and the
 seasonal factor. The developed methodology can be used by oil and petroleum products transportation enterprises for
 an objective and complete assessment of technological losses, their subsequent.

Properties of Salicylidene-Aniline as a Corrosion Inhibitor in Oil and Petroleum Products Transportation Systems

Introduction. Risks of accidents and fires during transportation and pumping of oil and petroleum products is a significant problem of technosphere safety. The reasons may be leaks due to corrosion damage to pipelines, tanks and oil storage tanks. In view of the possible serious financial, environmental and social consequences of such incidents, it is important to constantly seek new, more effective approaches to preventing corrosion processes. It is obvious, for example, that at present not all chemical compounds capable of suppressing or inhibiting the destruction of metals and alloys have been thoroughly studied. The presented scientific work is partly aimed at overcoming the lack of data in this area. The objective is to investigate an insufficiently studied compound salicylidene-aniline, which can be a corrosion inhibitor similar to other nitrogen-containing compounds similar in structure and composition.Materials and Methods. The gravimetric method was used to study the inhibitory, adsorption and complexing properties of salicylidene-aniline. The experiments were carried out with St3 steel plates. The mass of metal samples without an inhibitor and with an inhibitor was recorded before and after exposure in the test media. The effect was determined by the change in the corrosion rate. When setting up experiments, the authors were guided by GOST 9.905–82 "Unified system of corrosion and ageing protection. Corrosion test methods. General requirements". The volume of the corrosive medium was determined according to GOST 9.506–87 "Unified system of corrosion and ageing protection. Corrosion inhibitors of metals in water-petroleum media. Methods of protective ability evaluation". The corrosion criteria were taken from GOST 9.908–85 "Unified system of corrosion and ageing protection. Metals and alloys. Methods for determination of corrosion and corrosion resistance indices". The calculations were based on the valuation principle, which sets the ratio of a multiplicative metrized linear order on a set of particular criteria. An integral indicator based on mathematical and methodological approaches was used for ranking.Results. The effect of hydrochloric acid medium on steel samples St3 was studied. Four concentrations of the inhibitor were taken: 0 %, 0.01 %, 0.1 %, and 0.2 %. The mass of metal samples without an inhibitor and with an inhibitor was recorded before and after exposure in the test media. The effect was determined by the change in the corrosion rate. The mass index of corrosion was calculated. The surface quality during destruction and corrosion inhibition was determined in five stages: the elements to be evaluated were selected, the purpose of the evaluation was formulated, the elements of the technical condition of the object under study were found, the essence of determining the usefulness or value of the criterion was described, and the essence of optimization was explained. The studied properties were ranked with respect to the multiplicative metrized linear order on a set of particular criteria. For the calculations, the task was set — to determine the components of vector B in accordance with one of the evaluation stages. We are talking about the stage when the usefulness or value of the criterion is analyzed by points on the numerical axis indicating the state of the object "better — worse". We constructed an indicator z approximating a known or specified (learning) matrix of paired relationships between objects. The resulting indicator allowed us to assess the technical condition of the surface during the course of corrosion and when it slowed down due to the addition of salicylidene-aniline. The result was obtained for samples with a surface area from 10.1∙10-4 m2 to 11.9∙10-4 m2. During the experiment, the mass of the metal decreased by 0.2–0.8 times with the inhibitor and almost by 3.5 times without it. The mass index of corrosion was recorded from 0.15 g/m2∙h to 0.48 g/m2∙h. At the same time, the protective ability of the inhibitor was quite high: the minimum was 77.4 %, the maximum was 94.8 %. This is a convincing indicator. It is also worth mentioning such an advantage of salicylidene-aniline as a low danger. Its hazard class is III (for comparison: the hazard class of aniline is a level higher — II).Discussion and Conclusion. The authors propose to use salicylidene-aniline as a means to increase the safe service life of oil pipelines and tanks. The potential of this composition as an effective corrosion inhibitor, highly soluble in oil and petroleum products, has been proven. Such properties of salicylidene-aniline as slow oxidation and moderate toxicity are noted.

Analysis of the tank car market in Russia and optimization of operating models of operator companies

Background: Oil and petroleum products are still the main items of the Russian budget. This segment of cargoes is dominating in the railway transportation market. In the coming years, the study of this segment will not lose its relevance. Constantly arising shortage of wagons - petroleum tank cars, restricts sales of raw materials and products of their processing, leads to growth of transportation costs.
 Aim: The major goal is to quantify the shortage of tank cars for oil and petroleum products transportation and to develop an optimal operating model for the operator's company.
 Methods: The research data are statistical samples of oil and petroleum products transportation market indicators for the period from 2020 to the present, the indicators of efficiency of the rolling stock use by the operator companies. The research is built on the methods of statistical analysis of the market of oil and petroleum products transportation, factor analysis of dependences of the cargo volumes presented for transportation, the volume of transportation and the condition of the car fleet of operator companies.
 Results: The structured analysis of the tank car market in the Russian Federation is analyzed, and the operating model of the operator company with a full complex of logistic solutions for oil and petroleum products transportation, realized on the basis of the efficient use of the rolling stock fleet, is developed.
 Conclusion: Recommendations on optimizing operating costs for the maintenance of the rolling stock of operating companies, taking into account its maintenance in proper technical condition, ensuring traffic safety and increasing the efficiency of transportation by rail are given.

Analytical Model of Interaction of an Oil Pipeline with a Support of an Overpass Built in a Mountainous Area

Today, pipelines are the safest and most economical way to transport petroleum products and one of the key components of modern energy infrastructure. Nevertheless, pipeline systems are associated with certain risks that can lead to environmental disasters. The idea of carrying out this study was initiated by the results of the survey of the overpasses of the long-used oil pipelines laid in the mountainous area of the Carpathian region. Defects such as a change in the shape of the pipe and local bulges in the area of oil pipeline support nodes were detected. The explanation of the described problem is separate from the typical algorithms of design calculations, which are offered to manufacturers by current directive documents. The desire to provide an explanation and quantitative assessment of the detected defects became the main motivation for writing the article. An analytical model of the interaction of the oil pipeline with the rigid support has been developed. Additional internal loads in the cross-section of the pipe and displacement of its middle surface, which arise as a result of such interaction, are determined. The method of determining the reaction in the intermediate support of the overpass of the oil pipeline has been developed, considering the properties of the soil base in the underground sections and the mounting gap in the support node. The analytical dependence was obtained to determine the additional hoop stresses that arise in the oil pipeline due to the contact of the pipe with the support. The unambiguous relationship between the maximum additional hoop stress and the reaction in the support node was established. The dependence of additional hoop stresses on the geometric characteristics of the pipes was analyzed. The obtained research results are tested on the real structure of the overpass of the Druzhba oil pipeline, built in the Carpathians. In general, a simple engineering technique has been developed that allows analyzing the behavior of the oil pipeline support node and provides the numerical correction to the traditional strength assessment formulas, which determine the equivalent stresses in the oil pipeline.

Impact of Oil Pipeline Transportation and Vandalization on Economic Development in Ikwerre Local Government Area, Rivers State, Nigeria

This study is on the impact of pipeline transportation and vandalization on economic development in Ikwerre Local Government Area of Rivers State. Pipeline transportation is the preferred means of transportation of petroleum products in Nigeria. Significantly, this mode of transporting petroleum products has also become a major source of concern in that it appears to negatively affect the economic development of communities in the Niger Delta region. The study therefore, explores the impact of pipeline vandalization on economic development of Ikwerre Local Government Area. The methodology is qualitative. Data for the study is sourced from text books, newspapers, magazines, journals, periodicals, and documented materials. The findings highlight that the damage from pipeline operations has become chronic and cumulative and has compromised livelihoods and health of the impoverished communities leading to further economic under-development. The study recommends adoption of effective sustainable reforms to encourage responsible petroleum transportation activities in ways that will discourage vandalization and positively influence economic development of host communities in the near and long term.