Petroleum Products Research Articles

ANALYSIS OF THE PROPERTIES OF COATINGS USED TO PROTECT THE PUMP AND COMPRESSOR PIPE

In this article considers basic properties of protective coatings applied to the inner wall of tubing in order to extend pump and compressor pipe (PCP) service life PCP and minimize operational risks. The main complicating factors, such as scale deposits, corrosion aggressiveness, mechanical impurities, etc., arising during PCP operation are specified, groups of test media and test parameters for grading different types of coatings according to their resistance to complicating factors are singled out. Influence of various aggressive media on PCP, such as distilled water, petroleum product simulator, etc., coatings is described, and test media and test parameters for protective coatings are reviewed. The basic methods for determining the physical and mechanical characteristics, such as determining adhesion, thickness and dielectric continuity, of coatings are given, and brief informative and descriptive references for each of them are given. Recommendations are given for testing protective coatings on the inner surface of PCP for compliance with technical requirements, which ultimately allows selecting materials most resistant to aggressive field environments. The relevance of studying the influence of aggressive media on the protective coatings of the inner wall of tubing is due to the need to increase the level of reliability and durability of technical systems in operating conditions. The work is of interest to specialists in the field of materials science, technical expertise and tubing design, as well as researchers involved in the development of new materials and methods for surface protection in operating conditions. The results obtained will optimize the choice of protective coatings for specific operating conditions, which helps to increase the service life of tubing and reduce maintenance costs. This is of direct importance for reducing the risks of accidents and the environmental consequences of oil and gas production processes. In addition, the development of innovative materials and methods for protecting the surfaces of the inner wall of the tubing contributes to improving the efficiency of the operation of oil and gas wells, as well as helps to reduce equipment downtime.

REGIONAL COMPREHENSIVE ECONOMIC PARTNERSHIP: REGULATION OF FOREIGN TRADE

The world's largest free trade area in terms of GDP and population – the Comprehensive Regional Economic Partnership (CEP) – has been operating since January 2022. It includes 15 countries of the Asia-Pacific region: China, Japan, the Republic of Korea, all ASEAN countries, Australia and New Zealand. The main agreements within the framework of the VREP relate to the liberalization of foreign trade in goods with the prospect of liberalizing the services market, mutual investments and labor market regulation. The VREP maintains import tariffs in trade between member countries for 20 years. The exception is Singapore, where there are no import duties. The agreement details the procedures for determining the origin of the goods. It provides for an acceleration in the rate of tariff reduction and a departure to previously reached agreements in the case if the existing level threatens the interests of the national economy. The article considers the specifics of regulating tariff policy in the trade of fuel, ferrous metals and clothing, as well as import tariffs on basic foodstuff (cereals and meat) for the most densely populated countries of the European Economic Area. It is noted that import tariffs are absent or reduced for raw materials (coal, oil), but remain the same for manufacturing products (petroleum products, rolled products and ferroalloys). In terms of clothing, both developing and developed countries defend certain positions. There are positions on food (rice, chicken meat) protected by most member countries. The author notes that the interests of food security are more important than the requirements of trade liberalization.

Quality assessment of biomass pellets available on the market; example from Poland.

This study evaluates the quality of 30 biomass pellets sold for residential use in Poland. It provides data on their physical, chemical, and petrographic properties and compares them to existing standards and the information provided by the fuel producers. The results reveal considerable variations in the quality of the pellets and show that some of the purchased samples are not within the DINplus and/or ENplus certification thresholds. Among all 30 purchased samples, only one passes the quality thresholds set by the PL-US BIO, a newly established quality certification in Poland that combines quality assessment following DINplus with optical microscopy analysis. The primary issues causing a decrease in pellet quality include elevated ash and fines content, compromised mechanical durability, too low ash melting temperature, and additions of undesired additions like bark, inorganic matter, and petroleum products. Our research highlights the need for improved fuel quality control measures, and transparent and accurate product labeling, as well as the need for a comprehensive and publicly available national database of solid biomass fuel producers and fuels sold. These are essential steps toward increasing customers' awareness and trust, encouraging them to embrace biomass fuels as reliable and sustainable sources of energy.

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

The naval Operation Irini of the European Union: a step backwards of the csdp in the fight against the illegal immigration and search and rescue activities in the Mediterranean

Operation Irini is a new EU naval operation, in the framework of CSDP, to address violations of the arms embargo and illicit export of petroleum products in Libya, imposed by the United Nations Security Council. As a second objective, the Operation contributes to the training of Libyan coastguards in their fight against illegal immigration, as well as combating the mafias involved in the smuggling of migrants in the Central Mediterranean. From the outset, the naval operation has had scant resources and, unsurprisingly, its results have been poor in these first three years. In short, this new Operation, in the wake of Sophia’s poor results in the last months of its activity, represents a new setback for the CSDP and for the EU’s ambition to become a relevant actor in contemporary international society. Unfortunately, moreover, allegations of significant violations of migrants’ human rights by Libyan coast guard forces cast a shadow over the EU, which is assisting and training these security forces. Received: 04  September 2023Accepted:  24 January  2024

Determination of Sulphur Dioxide (SO<sub>2</sub>) Air Emission of Refined Petroleum Products by Emission Factor Approach for Air Pollution Control

Air pollution control is a safe method for achieving a sustainable environment and can be accomplished by adequately monitoring pollutants that pose significant environmental risks. The combustion of sulfur-containing petroleum products has been a major concern for several decades. Therefore, this study was aimed at determining sulfur levels in refined petroleum products such as Premium Motor Spirit (PMS), Automotive Gas Oil (AGO), and Dual-Purpose Kerosene (DPK). It also investigated the air quality implications of sulfur levels and estimated the contribution of the refinery’s products to sulfur dioxide air emission. Fuel samples were collected from the Warri Refining and Petrochemical Company (WRPC) in Nigeria and analyzed using Ultraviolet-visible spectrophotometer (UV-Vis) and Energy-Dispersive X-ray Fluorescence (EDXRF). Sulfur levels were determined at 425 nm wavelength, and sulfur dioxide air emission were estimated for seven consecutive years from 2010 to 2016 using the emission factor approach. The densities of PMS, AGO, and DPK were 0.77 kg/l, 0.832 kg/l, and 0.82 kg/l respectively. The levels of sulfur in PMS, AGO, and DPK were 2.007 x 10<sup>-4</sup> %, 6.970 x 10<sup>-5</sup> wt%, and 4.233 x 10<sup>-5</sup> wt% respectively from UV-Vis technique and 0.016, 0.087 and 0.029% respectively for EDXRF technique were found below the sulfur limit of 0.015 %, 0.005 % and 0.015 % for PMS, AGO and DPK respectively specified by Standard Organization of Nigeria (SON) specifications of 0.1, 0.5 and 0.15wt% for PMS, AGO and DPK respectively. The annual sulfur dioxide emissions were obtained for seven consecutive years from 2010 to 2016. The results from UV-VIS were observed to have the highest SO<sub>2</sub> emission of 0.1718 tons for PMS in 2011, 0.2593 tons in 2010 for AGO, and 0.0974 tons for DPK in 2010, while the lowest emission was observed to be 0.029 tons for PMS in 2015, 0.0362 tons in 2015 for AGO and 0.0181 tons for DPK also in 2015. The results from EDXRF technique were observed to have the highest SO<sub>2</sub> emission of 13.6939 tons for PMS in 2012, 323.6881 tons for AGO in 2010, and 66.7147 tons for DPK also in 2010, while the lowest emissions for PMS, AGO and DPK were all observed in 2015 to be 2.3122, 45.1872, and 12.4182 tons respectively. The study concluded that the refinery complied with the set requirements.

TEST RESULTS OF DOMESTIC RECUPERATIVE COALS

Adsorption steam recovery plants (VRS) of oil and petroleum products are among the most common in the world. This is facilitated by their relatively high throughput, low energy consumption, and a sufficiently high achievable degree of purification of the gas-air mixture (GAM) from hydrocarbons. The main consumable material in this case is an adsorbent – a substance capable of first selectively attaching hydrocarbon gases contained in hot water to its surface, and when thermodynamic conditions change, it detaches them. Most often, recuperative (activated) coal is used as an adsorbent. During operation, the adsorption capacity of recuperative coal gradually decreases. This is facilitated by the mechanical destruction heavy hydrocarbons contained in the hot water, which cannot be fully isolated during the desorption operation. Therefore, periodically recuperative coal requires replacement.Until recently, it was purchased abroad. Usually, recuperative coal was supplied complete with the recuperation units themselves, supplied from abroad. However, to date, adsorption VRS have begun to be produced in Russia. In addition, the endless sanctions of the West are forcing us to look for sources of supply of this adsorbent inside the country.The article presents the results of comparative laboratory tests of a number of recuperative coals for use in the adsorption of hydrocarbons from hot water. According to the of coal granules, as well as water vapor and value of the integral efficiency indicator, the best of them was the Sorber-30 brand coal. In addition, the enterprise at which it is produced has the necessary production facilities, human resources, capabilities for conducting input quality control of raw materials and the quality of finished products, and also supplies recuperative coal to consumers in sufficiently large volumes, i.e. is a reliable supplier.The article also describes the results of comparative industrial tests of the recovery coal «Sorber-30» and imported coal of the brand «CGF4 plus», operated in the adsorption VRSin LLC «Transneft – Port Kozmino» since 2014.

Surfactant foam injection for remediation of diesel-contaminated soil: A comprehensive study on the role of co-surfactant in foaming formulation enhancement

Aqueous foam injection is a promising technique for in-situ remediation of soil and aquifers contaminated by petroleum products. However, the application efficiency is strongly hindered by foam's instability upon contact with hydrocarbons. Addressing this, we propose a new binary surfactant mixture of Sodium Dodecyl Sulfate (SDS) and Cocamidopropyl Hydroxysultaine (CAHS). This study investigates CAHS's role as a co-surfactant in enhancing foam stability against antifoaming diesel oil under static and dynamic conditions. Using a dynamic foam analyzer (DFA-100), we assessed static foam's stability by monitoring decay profiles and bubble growth over time. The results revealed that the highest stability can be reached at a CAHS to SDS ratio of 50:50, increasing the half-life of the foam by 7.7 times. Remarkably, our analyses at bulk and bubble scales also elucidated the mechanisms behind the enhanced foam stability of the proposed binary surfactant mixture in the absence and presence of diesel. Additionally, in a 1D sand column, the SDS-CAHS mixture demonstrated more than twofold improvement of the Resistance Factor, attributed to the better survival of the lamellae due to the reduced rate of their destruction. This formulation also yielded a recovery improvement of >10 % compared to SDS foam. The significant improvements in stability and performance of the SDS-CAHS (50:50) mixture were credited to a robust pseudo-emulsion film formation, creating a higher oil entry barrier. This reinforcement and the surfactant molecules' synergistic interactions at the gas-liquid-oil interface significantly contributed to the overall effectiveness.

The Potential for Restoring the Activity of Oxidoreductases and Hydrolases in Soil Contaminated with Petroleum Products Using Perlite and Dolomite

The research focused on assessing the response of oxidoreductases (dehydrogenases and catalase) and hydrolases (urease, acid phosphatase, alkaline phosphatase, arylsulfatase, and β-glucosidase) to diesel oil (DO) and gasoline (G) contamination of soils subjected to phytoremediation with Zea mays. The activity of enzymes constitutes one of the fundamental mechanisms for the removal of contaminants from soil, which have the potential to contaminate not only the soil but also groundwater and water reservoirs. Additionally, correlations between enzyme activity and the basic physicochemical properties of the soil were determined. The interaction of perlite and dolomite with soil enzymes and the cultivated plant was also tested. The study was carried out in a pot experiment, where soil contaminated with DO or G was artificially treated at doses of 0, 8 cm3, and 16 cm3 kg−1. Perlite and dolomite were applied for remediation at doses of 0 and 10 g kg−1 of soil. Zea mays was found to respond to the tested pollutant with a reduction in biomass. DO affected the growth of this plant more than G. DO reduced the yield of aerial parts by 86% and G by 74%. The negative effects of these pollutants on the growth and development of Zea mays were mitigated by both perlite and dolomite. DO exerted greater pressure than G on the activity of oxidoreductases and hydrolases, as well as on the physicochemical properties of the soil. DO enhanced the activity of oxidoreductases and most hydrolases, whereas G inhibited them. The implementation of dolomite intensified the activity of all enzymes, except AcP (acid phosphatase) and Glu (ß-glucosidase), in soil contaminated with DO and G, and also improved its physicochemical properties. Perlite induced less significant effects than dolomite on soil enzymes and the physicochemical properties of the soil.

Design of an Intelligent Energy Management System for Electric Vehicle Charging Station

In today’s world there are more outcomes in environmental change due to the overutilization of petroleum products in this manner prompting a genuine effect on the climate. So there is a need for a substitute answer for lessen the consumption of such non – sustainable assets. One such exertion made in the field of Freeways is the advancement of "Solar Freeways" which can be an elective arrangement. Sun oriented streets consolidate various arrangements in one – it can assist us with improving the creation of power utilizing sun based boards, to give a computerized stage to our future country's ventures like Smart Cities, and to work with the arising electric vehicles that supplant the petroleum driven vehicles and substantially more. Motivated by the fact that there are numerous amount of clean and sustainable energy we receive from roadways, the following study puts forward some of the event and application of an innovative charging method for the renewable energy driven electric cars, buses by using the roadway and also implementation of revolutionary nanotechnology along with the latest best in the house power electronics and power system analysis tools. A small scale prototype model was made by our team to attest the working of smart inductive charging process. Our project team was successful to improve the working of the model by improving the use of the preinstalled solar panels and also implement its use on the very concept we are trying to improve. On the vehicle, there will be the use of coils which are experimentally made for the flow of charges that are needed to provide charge to a moving electric vehicle (EV). The detailed strategy is presented in this report. Key Words: Environmental change, Overutilization of petroleum products, Solar Freeways, Renewable energy, Electric vehicles (EVs), Smart Cities, Nanotechnology

КОМПЛЕКСНЫЙ ПОДХОД К ПЕРЕРАБОТКЕ УЛОВЛЕННЫХ НЕФТЕПРОДУКТОВ

The scheme for the formation of captured (return) petroleum products from an oil refinery has been studied. A new scheme for processing captured petroleum products has been proposed, which makes it possible to reduce the amount of trapped petroleum products through qualified processing of light and middle distillate fractions. The rational use of the heavy fraction is proposed

ТРАНСПОРТИРОВКА НЕФТИ И НЕФТЕПРОДУКТОВ В РОССИИ

The article discusses the specifics of the transportation of oil and petroleum products, as well as the problems and prospects for the development of pipeline transport in Russia

A Study of Financial Planning and Forecasting With Reference to Indian Oil Corporation Limited

Financial planning is a ceaseless procedure of guiding and designating financial assets to meet strategic goals and targets. The yield from financial planning appears as budgets. The most generally utilized type of budgets is Pro Forma or Budgeted Financial Statements. The establishment for Budgeted Financial Statements is Detail Budgets. Detail Budgets incorporate sales conjectures, production figures, and different gauges in help of the Financial Plan. On the whole, these budgets are alluded to as the Master Budget. We can likewise separate financial planning into planning for tasks and planning for financing. Working individuals centre around sales and production while financial planners are keen on the best way to back the tasks. In this manner, we can have an Operating Plan and a Financial Plan. Be that as it may, to keep things basic and to ensure we incorporate the procedure completely, we will consider financial planning as one single procedure that includes the two tasks and financing. Financial Planning begins at the highest point of the organization with strategic planning. Since strategic choices have financial ramifications, you should begin your planning procedure inside the strategic planning process. Inability to interface and associate planning with strategic planning can result in budgets that are "dead on landing." Strategic planning is a formal procedure for setting up goals and targets as time goes on. Strategic planning includes building up a statement of purpose that catches why the organization exists and plans for how the organization will flourish later on. Strategic targets and relating goals are created dependent on an exhaustive evaluation of the organization and the outer condition. At last, strategic plans are executed by building up an Operating or Action Plan. Inside this Operating Plan, we will incorporate a total arrangement of financial plans or budgets. Indian Oil Corporation Limited (IOCL), also known as Indian Oil, is an Indian government-owned oil and gas explorer and producer, a significant player in the country's energy sector. Headquartered in New Delhi, it is the largest commercial oil company in the country, with a significant presence across the value chain of the petroleum industry, including refining, pipeline transportation, and marketing of petroleum products. IOCL's Chennai operations are a vital part of its extensive network, contributing significantly to its overall performance. IOCL's operations in Chennai also include a sprawling network of pipelines. These pipelines are crucial for the efficient transportation of crude oil to the refinery and the distribution of refined petroleum products to different parts of the region. This network ensures a consistent and reliable supply of fuel, which is vital for the economic development of the area. The retail network of IOCL in Chennai and the surrounding region is extensive, with numerous petrol and diesel stations. These retail outlets not only provide fuel but also offer a range of services and products to consumers. IOCL's focus on customer satisfaction and service quality has made it a preferred brand among consumers. Moreover, IOCL has been at the forefront of adopting innovative technologies and sustainable practices in its operations. The company has undertaken several initiatives in the areas of energy conservation, emission reduction, and waste management to minimize its environmental footprint. These efforts underscore IOCL's commitment to environmental sustainability and its role in promoting green energy alternatives. Indian Oil Corporation Limited's Chennai operations are integral to its strategic objectives and overall success. Through its refinery, pipeline network, and retail outlets, IOCL not only contributes significantly to India's energy security but also plays a pivotal role in the economic development of the region. With a focus on innovation, sustainability, and customer satisfaction, IOCL is poised to continue its leadership role in the Indian petroleum industry. I have chosen Indian Oil Corporation Limited (IOCL) for a project offers a unique opportunity to engage with one of India's leading public sector enterprises, playing a pivotal role in the country's energy sector. IOCL's diverse operations, spanning across refining, pipeline transportation, and marketing of petroleum products, provide a rich learning ground for interns. The exposure to a vast spectrum of operations allows for an in-depth understanding of the energy industry's complexities, offering invaluable insights into both the technical and business aspects of the field. The mentorship and training provided by industry veterans at IOCL are unparalleled, equipping interns with the skills and knowledge necessary to thrive in their future careers. Additionally, the organization's emphasis on corporate social responsibility and community engagement initiatives offers a broader perspective on the impact of business operations on society and the environment. In IOCL is not just a step in one's career journey but a leap into a world of opportunities for growth, learning, and making a meaningful contribution.

Economies of scale in Saudi Arabia's refining sector: An application of modern econometric models

This paper aims to reveal how the refining industry's inputs in Saudi Arabia affect its output and to forecast refining industry dynamics. The variables used in this paper are the refined petroleum products representing the dependent variable, with natural gas liquids, crude oil, labor, and capital acting as explanatory variables covering the period 1990–2020. The long run cointegration of the variables was observed. An error correction model utilizing the Cobb–Douglas production function framework was performed. Furthermore, this study applied the vector autoregressive model (VAR) and its diagnosis tests, including forecast-error variance decomposition (FEVD) and impulse response functions (IRFs).The results indicate that natural gas liquids and crude oil have a significant influence on the refining industry's output. Although capital and labor are significant determinants of output, they do not contribute significantly to output creation in the refining industry. This might be related to some parts of the capital and human resources being directed toward supporting activities, such as administration, technical support, maintenance, transportation, logistics and assigning third-party contractors to perform the main duties related to the production process. Additionally, the petroleum refining industry requires substantial capital resources for construction and maintenance. Thus, the actual measurement of capital input's influence on output was observed in the long run. The results reveal that the refining industry's variation is influenced by both its own characteristics and that natural gas liquid, crude oil, capital, and labor factors have a significant impact on the accuracy of industry forecasts.This study concludes that Saudi Arabia's petroleum refining industry operates under decreasing returns to scale, while the shocks in the refining industry are influenced and caused by external factors.

Disaster Risk Reduction Initiatives in Road Transportation of Petroleum Products

Disaster Risk Reduction Initiatives in Road Transportation of Petroleum Products

An analysis of the abolition of premium motor spirit (PMS) subsidies in Nigeria: a breach of social contract or climate change action?

The study examines the payment of fossil fuel subsidies made in Nigeria on petrol, with an analysis of the laws governing its payments. It explores the reasons for the removal of the petrol subsidy and examines the merits advocated by proponents of its elimination. Additionally, it investigates the diverse pricing methods employed for petroleum products. Employing a doctrinal legal research methodology, the article relies on the existing primary and secondary sources of laws to provide insights for the reforms. The study concludes with recommendations such as the implementation of a mixed economic system, reinforcement of trade laws, consumer protection and competition laws, improvement of transparency and accountability, promotion of investments in local refineries, adoption of cleaner alternative energy sources such as renewable energy sources by adopting the global energy transition agenda, and provision of palliatives. The findings unravel the complexities surrounding petrol subsidy payments which have occasioned corruption, rent-seeking activities and insufficient utilization of clean sources of energy. A significant gap exists in Nigeria’s energy sector compared to the selected case study countries. The study provides valuable insights for policymakers and stakeholders. The recommendations promote transparency, and accountability and will facilitate the necessary reforms for sustainable downstream petroleum industry and global energy security.

Experimental investigation of performance, emission, and combustion characteristics of a variable compression ratio engine using waste cooking vegetable oils blended with diesel

The availability of crude oil and petroleum products has become scarce and costly over the years leading to a stiff rise in engine fuel. Due to the depletion of conventional fuels; alternative fuels are gaining importance in recent times and Waste Cooking Vegetable Oils (WCVOs) are the viable option for the same. The present study highlights the performance, emission, and combustion characteristics of the Variable Compression Ratio (VCR) engine using three varieties of WCVOs (Ground Nut (GDN), Palm (PM), and Sunflower (SF)). Their inferior fuel features (density, viscosity, calorific value, etc.) are enhanced by blending 30 % of these oils with 70 % Diesel. The experiments are then conducted in the VCR engine using these blended oils under varying loading conditions (0–8 N) and at a constant speed of 1500 (RPM) with a compression ratio (18:1). It is seen that a single blend of Palm oil (PM) increases the engine Brake Thermal Efficiency (BTE) by 5 % in comparison to Diesel and other blended fuels (GDN, SF) owing to its lower calorific value and greater viscosity. The engine Brake Specific Fuel Consumption (BSFC) decreases with the increase in load and the lower loads reduce the BSFC for WCVOs by 9–15 % compared to Diesel. Engine emissions like Carbon Monoxide (CO), Nitrogen Oxide (NOx), and Hydrocarbons (HC) are also reduced significantly (by 12–15 %) using these blended oils compared to Diesel. The surge in both the Peak Cylinder Pressure (PCP) and Heat Release Rate (HRR) is also observed using these blended fuels, especially for Sunflower. Hence, these WCVOs are an appropriate option to advance the VCR engine performance and decrease its emissions.

Asymmetric effects of oil demand and oil supply shocks on New Zealand's trade

We analyze how different types of oil price shocks affect trade and whether these effects are asymmetric. Our focus is on New Zealand, which has historically been a net oil importer but recently transitioned to an import-only model to meet its needs for finished petroleum products. The analysis proceeds in two stages. First, we identify oil supply shocks, aggregate demand shocks, and oil-specific demand shocks using a recursive structural vector autoregression model. Then, we study whether the effects of these shocks on New Zealand's exports to and imports from its key trading partners—Australia, China, and the United States—are asymmetric using nonlinear autoregressive distributed lag models. The results show differences in the effects of different types of oil price shocks on exports and imports in the short and long run; however, there is limited evidence of asymmetries in these effects, especially in the case of exports. Exports to Australia and China, the most critical markets for New Zealand's exporters, are largely insensitive to oil price shocks.

Assessment of the Ra-226 and Ra-228 Content in the Bottom Sediments of the Kolva and Usa Rivers (Bolshezemelskaia Tundra of the Nenets Autonomous Region and the Komi Republic)

An assessment was made of the content of natural radionuclides Ra-226 and Ra-228, as well as petroleum products, in the bottom sediments of the Kolva and Usa rivers (Bolshezemelskaia tundra of the Nenets Autonomous Region and the Komi Republic). The values of the specific activities of the studied radionuclides, their isotope ratios, the concentration of petroleum products are obtained, and the correlation dependences of the specific activities of Ra-226 and Ra-228 on the concentration of petroleum products are established. It has been demonstrated that certain sections of the Kolva river are characterized by increased content of Ra-226 in bottom sediments. It was concluded that the likely source of radionuclide entry into bottom sediments is the entry of oil and gas waste into surface waters.

ОЦЕНКА ВОЗМОЖНОСТИ ЭСКАЛАЦИИ ПОЖАРА ПРИ ХРАНЕНИИ МОТОРНЫХ ТОПЛИВ В ПОЛИМЕРНЫХ ЭЛАСТИЧНЫХ РЕЗЕРВУАРАХ

Due to the increase in oil production and production of petroleum products, as well as their transportation and storage, the range and sizes of reservoirs are increasing. For this purpose, polymer tanks are widely used at Russian enterprises of the fuel and energy complex, including mobile tank farmsand oil depots for the operational storage of oil and petroleum products. However, the polymer materials from which the tanks are made are flammable, which increases their fire hazard level. An assessment of the possibility of fire escalation has been carried out using the example of an oil depot model for storing motor fuels in polymer elastic tanks. The results 
 of calculating the dangerous factors of a spill fire during depressurization of polymer elastic tanks with gasoline and diesel fuel, as well as a graph of the dependence of the intensity of thermal radiation during the ignition of these tanks, are presented in tabular form, and an event tree is constructed. The parameters characterizing the possible escalation of a fire at a motor fuel storage site under quasi-stationary conditions have been determined.
 A methodology is proposed that allows assessing the possibility of realizing the escalating nature of a fire at facilities for storing and handling motor fuels in polymer elastic tanks, and recommendations are also given to prevent the progressive nature of the development of negative events and reduce damage in case of fire.