scholarly journals CALCULATION OF QUANTITATIVE INDICATORS SEISMIC IMPACT ON STORAGE TANKS FOR LIQUEFIED NATURAL GAS IN SOUTHERN SAKHALIN, ANIVA BAY

2016 ◽  
Vol 1 (12) ◽  
pp. 65-70
Author(s):  
Завадская ◽  
Elena Zavadskaya ◽  
Ковальчук ◽  
Oleg Kovalchuk
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Liquefied Natural Gas ◽  
Seismic Action ◽  
Seismic Safety ◽  
Aniva Bay ◽  
Hazardous Area ◽  
Seismic Impact ◽  
Quantitative Indicators ◽  
The City

Currently, topical issue of seismic safety of a object of special type. In Russia, in 2009, put into operation a plant for the production, storage and transportation of liquefied natural gas (LNG text below) located in a seismically hazardous area. The most catastrophic consequences will arise if, as a result of the earthquake, there will be large-scale destruction of the LNG storage tank, located on the territory of the plant. To evaluate the seismic safety of a particular type of facilities, it is first necessary to determine the data describing the quantitative indicators of seismic effects on these facilities. To simulate the seismic action is necessary to set the parameters: the area under consideration - the southern part of Sakhalin Island, near the Aniva Bay, the city of Yuzhno-Sakhalinsk; isothermal tank (hereinafter referred IT) is a double-walled construction of 100 thousand m ^ 3, the height of 37 m and a diameter of 67 m.; natural gas, poured into the IT, is cooled to a temperature of minus 160 ° C. Turning to the liquid state, the volume is reduced by more than 600 times. After cooling, the LNG is stored at a temperature of minus 158 ° C.

Large-scale liquefied natural gas ships

2020 ◽  
Vol 7 (3) ◽  
pp. 461-465
Author(s):  
Danping Lou ◽  
Yan Li
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Liquefied Natural Gas

scholarly journals The Influence Of Foundation Soils Concernig The Behaviour Of Buildings

2015 ◽  
Vol 5 (2) ◽  
pp. 87-93
Author(s):  
M. Tudorică ◽  
C. Bob
Keyword(s):  
High Risk ◽  
Large Scale ◽  
Seismic Action ◽  
Entire Volume ◽  
Seismic Safety ◽  
Behaviour Analysis ◽  
Swelling Soil ◽  
Existing Structure

Abstract An issue more and more important in construction science represents the rehabilitation of structures placed on difficult soils. This paper presents the behaviour analysis of an existing structure and summarizes several consolidation solutions at both levels of a severely damaged construction placed on a shrinking and swelling soil, located in Arad County - Romania, situated on 55 Revolutiei Avenue. These types of soils are known in specialty literature as shrinking fields, expansive or active soils, having the property to modify sensitively their entire volume when there are variations of moisture, being spread on a large scale in Romania. After the assessment of seismic safety for a section of the damaged structure, which is characterized by a high risk of collapse from seismic action, reason for which it has been proposed to immediate by consolidate the damaged construction.

Boil-Off Gas Formation inside Large Scale Liquefied Natural Gas (LNG) Tank Based on Specific Parameters

2012 ◽  
Vol 229-231 ◽  
pp. 690-694 ◽  
Author(s):  
Mohamad Shukri Zakaria ◽  
Kahar Osman ◽  
Md. Nor Musa
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Seawater Temperature ◽  
Three Dimensional ◽  
Ambient Air ◽  
Calculation Model ◽  
Liquefied Natural Gas ◽  
Three Dimensional Model ◽  
Ambient Seawater ◽  
Lng Tank

Liquefied Natural Gas (LNG) fleets are coasting with various condition and behavior. These variable leads to different type of LNG fleets build every year with unavoidable generated Boil-off Gas (BOG). Estimation of BOG generated inside LNG tank play significant role in determines the ship specification and management method of BOG including venting, propulsion or requalification. Hence, in the present study, the right choices of boundary condition and parameter have been implementing in order to have good estimation amount of BOG evaporates for specific LNG tank. Three dimensional model of cargo with capacity 160000 m3 LNG carrier are simulate using ANSYS Fluent with specific ambient air temperature of 5oC and ambient seawater temperature of 0oC have been chosen as a calculation case, gain the total heat transfer rate and Boil-off Rate (BOR). The result shows that the calculation model and simulation are feasible with typical LNG fleet specification and International Marine Organization (IMO) standard.

scholarly journals Large-Scale Blasts Seismic Load on Natural and Technical Objects

2015 ◽  
Vol 4 (2) ◽  
pp. 33-39 ◽  
Author(s):  
Сясько ◽  
A. Syasko ◽  
Гриб ◽  
G. Grib ◽  
Гриб ◽  
...  
Keyword(s):  
Vibrational Frequency ◽  
Large Scale ◽  
Seismic Load ◽  
Frequency Content ◽  
Spectral Content ◽  
Seismic Safety ◽  
Direct Measurements ◽  
Seismic Impact ◽  
Maximal Shift

Seismic safety of large-scale blasts is one of the most important geoecological aspects of open-cut mining. Seismic load of largescale blasts which defines integrity of industrial and residential objects is of special interest. The work represents evaluation of negative seismic impact of large-scale blasts at «Neryungrinskiy» open-cut on the natural and technical systems located in the blasting zone. The main characteristic of evaluated seismic load of explosion wave damaging natural and technical constructions is the maximal value of vectorial velocity of earth movement during large-scale blasts. Determination of permissible speed fluctuation included its frequency content, as waves of different frequency with equal values of drift velocity are dangerous to various extents. Peculiarities of vibrational frequency of the constructions caused by seismic load of the blasts and self-induced vibrations were taken into account while evaluating seismic load. Considering spectral content of the vibrations caused by the blasts and self-induced vibrations values of gas containers and constructions of compressor station, it’s necessary to point out that the frequencies differ for 1,5—2 times and this is the favourable factor because of impossibility of resonant phenomena occurrence. Determination of permissible velocity included swinging of the building. Swinging is understood as ratio of maximal shift of the measured at the top points of the constructions to maximal shift of the foundation ground. According to the results of direct measurement, swinging does not exceed 1,5 times that’s why it is possible to found on prevailing values of ratios, calculated by means of experimental way as statistically explained. The permissible velocity should be accepted as Uperm — 1,25 cm/s. for the objects. By “swing” we understand the correlation of maximum offset measured on top of construction to maximum offset of subfoundation. According to direct measurements offset rate stays below 1,5, therefore we can rely on prevailing experimentally obtained value of correlations and set allowable speed to Ual = 1,25 sm/s.

ASSESSING THE POTENTIAL OF KEY EXPORTERS IN THE GLOBAL LIQUEFIED NATURAL GAS MARKET

2020 ◽  
Vol 1 (3) ◽  
pp. 39-48
Author(s):  
A. A. SHCHEGOL’KOVA ◽  
Keyword(s):  
Natural Gas ◽  
Economic Analysis ◽  
Large Scale ◽  
Global Market ◽  
Liquefied Natural Gas ◽  
Transport Infrastructure ◽  
Graphical Methods ◽  
Analysis Calculation ◽  
Key Drivers ◽  
Gas Market

The article provides an analysis of the global market for liquefied natural gas (LNG), which revealed the key drivers of changing market dynamics. The development and prospects of large-scale gas projects of the main LNG exporting countries are shown. The potential of key LNG exporters, prospects for the development of the global LNG market has been assessed. Research and analysis of trends in the global LNG market were carried out using statistical methods of economic analysis: calculation of averages, indices; creation of ranks of dynamics; Summaries, groupings of economic indicators; Graphical methods of research were also used. The article assesses the prospects of Russian producers in the global LNG market from the perspective of diversification and modernization of gas transport infrastructure.

FEATURES OF CURRENT ECONOMIC ENVIRONMENT OF GLOBAL LIQUEFIED NATURAL GAS MARKET

2020 ◽  
Vol 5 (12) ◽  
pp. 153-163
Author(s):  
A. A. SHCHEGOLKOVA ◽  
◽  
◽  
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Driving Forces ◽  
Liquefied Natural Gas ◽  
Economic Environment ◽  
The Arctic ◽  
Resource Base ◽  
Natural Gas Market ◽  
Gas Market ◽  
The Impact

The subject of this article is the economic environment of the global liquefied natural gas (LNG) market. The article assesses the development trends in the global liquefied natural gas market, identifies the key driving forces of the global LNG market, analyzes the existing contractual models in the global LNG market. The study uses a general scientific methodology that provides for a systematic, comprehensive approach to assessing the current economic situation in the global LNG market. A significant array of statistical data and factual material on the global LNG market was analyzed, the results of the research were obtained using statistical methods of economic analysis. As a result, the author conducted an analysis of the trends in the global LNG market, which made it possible to identify the key driving forces behind changes in market dynamics. The dynamics and structure of the global LNG market for the period 2015–2019 have been investigated. An assessment of Russia's position in the global LNG market is given. The impact of the "coronacrisis" on the global LNG market has been studied. The development and prospects of large-scale gas projects of the main LNG exporting countries are shown, the influence of the price environment on the implementation of LNG projects is investigated. It is revealed that geopolitical factors have become decisive in the formation of the world energy policy. The possible impact of the legislative expansion of the resource base of the Arctic territories on the growth of production and export of Russian LNG has been determined. It is concluded that the strategic goal of Russia's energy geopolitics is to modernize the existing export model of LNG for the long term. Modernization of the existing energy export strategy will strengthen the country's competitive position in the global LNG market, thereby becoming the basis for Russia's regional presence in the Arctic, where the main increase in LNG capacity is expected.

Liquefied Natural Gas (LNG) as a Freight Railroad Fuel: Perspective From a Western U.S. Railroad

2012 ◽  
Author(s):  
Michael E. Iden
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Liquefied Natural Gas ◽  
Rolling Stock ◽  
Dual Fuel ◽  
Technology System ◽  
Pilot Fuel ◽  
Gas Ignition ◽  
Gas Fuel ◽  
Lng Fuel

The use of liquefied natural gas (LNG) as a line-haul locomotive fuel is not a new idea, despite recent publicity, with previous work stretching back into the 1980s. Intense publicity has been given to recent announcements about developing dual-fuel locomotive engines which can burn natural gas as the primary fuel, using diesel fuel only as a pilot fuel for gas ignition. However, developing a locomotive engine capable of using gaseous fuel may prove to be only one of five major challenges to widespread adoption of LNG as a freight railroad fuel: 1. Dual-fuel line-haul locomotives with engines which can use natural gas fuel must be developed and made available for use. 2. Natural gas fuel must be made available to dual-fuel locomotives, either onboard the locomotive itself or by using LNG tenders coupled to the locomotives. 3. LNG must be stored and available for refueling dual-fuel locomotives or their tenders at logical locations along railroad corridors where such locomotives are to be used. 4. Natural gas (from gas fields or pipelines) must be available along with liquefaction plants to convert the gas into cryogenic LNG fuel. 5. The safe operation of trains and locomotives, and safe maintenance of rolling stock, is paramount and cannot be compromised (nor should the efficiency of the rail system) should dual-fuel locomotives and LNG tenders supplant or replace conventional diesel-fueled locomotives. For LNG to become an effective large-scale freight railroad fuel, all five factors must be managed jointly and treated as a 5-legged technology system. If any one of the five “technology legs” is weak or improperly developed, the entire LNG-based system may be unsuitable in the freight railroad environment.

Liquefied natural gas as a backup fuel for TPP

2021 ◽  
Vol 14 (2) ◽  
pp. 84-91
Author(s):  
S. N. Lenev ◽  
V. B. Perov ◽  
A. N. Vivchar ◽  
A. V. Okhlopkov ◽  
O. Y. Sigitov ◽  
...  
Keyword(s):  
Natural Gas ◽  
Power Plants ◽  
Large Scale ◽  
Gas Flow ◽  
National Policy ◽  
Liquefied Natural Gas ◽  
Fuel Oil ◽  
Gas Flows ◽  
Gas Industry ◽  
Gas Consumption

Major trends in the development of the gas industry point to a large-scale expansion of the liquefied natural gas (LNG) market, which continues to be a fast-growing segment compared to other energy sources. The national policy of the Russian Federation is aimed at developing the infrastructure of LNG complexes. This article analyses the world experience in the use of LNG complexes in gas consumption peak damping installations, which meet the conditions of LNG use as a backup fuel by PJSC Mosenergo branches (low-tonnage production combined with a large volume of LNG storage). It is shown that, in terms of the conditions of production and use of LNG at power plants, the most suitable are installations with 90–100% liquefaction of the incoming gas flow with an external refrigerating circuit using a mixed refrigerant or nitrogen, which provide the composition of regasified LNG almost identical to the composition of the source gas. The authors have formulated requirements for the development of energy-efficient LNG complexes at PJSC Mosenergo branches, including ensuring cycle energy consumption by expanding the network gas in the expander with utilization of refrigerating capacity in the liquefaction cycle, as well as cooling the compressed coolant of the refrigerating circuit by gas flows supplied further for combustion. The technological features of implementation of the LNG complex for production, storage and regasification of LNG as a reserve fuel for TPPs are reviewed. The study has shown that the most suitable power plant for the introduction of an LPG complex is TPP-22, for which a new fuel oil facility is being designed. Despite the current practice of using fuel oil and diesel fuel as backup fuels, LNG can have a competitive advantage through the use of secondary energy resources of TPPs. 

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