scholarly journals Wind-resistant optimization design of large storage tanks in island-type petrochemical parks

2021 ◽  
Vol 261 ◽  
pp. 01017
Author(s):  
Haoran Hu ◽  
Jian Guo ◽  
Bingyuan Hong ◽  
Yan Yan ◽  
Xu Yang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Optimization Design ◽  
Ring Structure ◽  
Strong Wind ◽  
Storage Tanks ◽  
Static Structure ◽  
Element Analysis ◽  
Oil Storage ◽  
The Finite Element Analysis

Due to the thin-walled wind-sensitive structures of large crude oil storage tanks, it is necessary to consider the wind load failure of oil storage tanks in coastal areas under strong wind conditions during the design process. Based on the finite element analysis software ANSYS\Workbench, the static structure analysis and buckling analysis of the 100, 000 cubic crude oil storage tanks are carried out. In order to solve the buckling failure phenomenon, a wind-resistant ring structure was optimal designed for the crude oil storage tank according to standards, so that the storage tank can withstand hurricanes and typhoons above level 12 with a wind speed of 137 km/h.

The Evaluation of the Influence of Geographic and Meteorological Factors on Heat Transfer in the Case of Crude Oil Storage in Overground Tanks

2017 ◽  
Vol 68 (6) ◽  
pp. 1384-1391
Author(s):  
Tudora Cristescu ◽  
Monica Emanuela Stoica ◽  
Silvian Suditu
Keyword(s):  
Heat Transfer ◽  
Standard Model ◽  
Crude Oil ◽  
Heat Loss ◽  
Experimental Research ◽  
Storage Tank ◽  
Meteorological Factors ◽  
Storage Tanks ◽  
Oil Storage ◽  
Main Factors

The study aims to analyze the main factors that influence the transfer of heat in the case of crude oil storage. A model based on the computing relations taken from specific publications was developed. The case studies were conducted on the basis of experimental research on several oil storage tanks, located in an oil transit station in Romania. The following two cases were analyzed, i.e., when the crude oil is heated and stagnates in the storage tank, and when it only stagnates, respectively. The analysis and application of the developed standard model facilitated the establishing of the factors that influence heat transfer. The influence of the geographic position and meteorological factors was also analyzed, which led to the formulation of conclusions with respect to the heat loss that occurs through the walls of the tanks.

Determining the Subsidence of Oil Storage Tank Walls from Geodetic Leveling

2011 ◽  
Vol 367 ◽  
pp. 467-474 ◽  
Author(s):  
R. Irughe Ehigiator ◽  
J.O. Ehiorobo ◽  
M.O. Ehigiator ◽  
Ashraf A. Beshr
Keyword(s):  
Crude Oil ◽  
Least Squares ◽  
Storage Tank ◽  
Parallel Plate ◽  
Monitoring Network ◽  
Control Points ◽  
Storage Tanks ◽  
Estimation Model ◽  
Oil Storage ◽  
Oil Storage Tank

In this paper the monitoring for subsidence in crude oil storage tanks by the method of Geodetic leveling is discussed. The monitoring network consisted of three control points established about 100m from the tank and 16 studs established at the base of the tank. From the control points, the stud locations were leveled using a geodetic level with parallel plate micrometer and telescopic staves. All levels were run in forward and reverse directions and the measurements were carried out in 2003, 2004 and 2008. Adjustment of observation was carried out using the least squares estimation model to determine the elevation of each stud position in the three measurement epochs together with their accuracy standards. Comparisons were made of the calculated movements from the three measurement epochs and the associated accuracies calculated from the least squares model. Analysis of the results indicated that with the exception of one stud ( stud 8), all other studs emplaced had moved and the movements ranged from 0.91mm to 13.06mm

Online AE Inspection and Safety Assessment of Vertical Storage Tank

2007 ◽  
Author(s):  
Weihe Guan ◽  
Yuanhong Tao ◽  
Xuedong Chen ◽  
Rong Yuan ◽  
Yingfeng Chen
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Safety Assessment ◽  
Present Condition ◽  
Laboratory Simulation ◽  
Storage Tanks ◽  
Internal Corrosion ◽  
Continuous Increase ◽  
Disastrous Consequence ◽  
Oil Storage

With the rapid growth of the global petroleum industry and continuous increase of energy demand, the crude oil and product oil reserve has been given a general concern in every country, and the requirements for the reserve capacity of various types of petroleum storage depots become higher and higher, therefore, the quantity of various types of storage tanks is increasing dramatically. At present, 100,000m3 storage tank has become the primary structure for construction of crude oil storage tanks for Chinese petrochemical industry. Large vertical metal storage tank features large capacity, central distribution, storage of inflammable, explosive and toxic media etc., leakage or explosion accident, once happens, often results in disastrous consequence and severe environmental pollution, which brings a huge loss and hazard to social economy, production and people’s living. The major cause for the accidents of storage tanks is corrosion and leakage, the external corrosion is mainly the soil corrosion and moist atmospheric corrosion of outer wall of oil tank baseplate; the internal corrosion is the corrosion of tank bottom, tank wall and tank top. Among the above corrosions, the most hard to treat is the corrosion of tank baseplate. In this paper through laboratory simulation of AE tests of leakage of storage tank and corrosion of baseplate and comparison between online AE inspection of more than 30 large vertical storage tanks and shutdown inspection of part of storage tanks, the matters about online AE inspection techniques for corrosion and leakage of storage tank baseplate and safety assessment of vertical storage tank are discussed, online AE inspection technique and assessment standard fit for China’s present condition are proposed, the safety class and corresponding shutdown inspection cycle of vertical storage tank are determined, the storage tanks where no problems are found by online AE inspection continue their service, whereas the storage tanks where severe problems are found are shut down for inspection, thus the contradiction between shutdown inspection and safe production is basically solved.

Research on Implementation Method and Technical Application of Risk Assessment to Storage Tank at National Petroleum Reserves

2020 ◽  
Author(s):  
Zhou Fang ◽  
Zhe Wang ◽  
Guanghai Li
Keyword(s):  
Risk Assessment ◽  
Crude Oil ◽  
Storage Tank ◽  
Research Work ◽  
Assessment Method ◽  
Storage Tanks ◽  
Technical Application ◽  
Inspection Method ◽  
Oil Storage ◽  
Risk Assessment Method

Abstract The inspection method based on risk was studied about 23 large tanks of a national strategic oil reserve base, which was a relatively large research work, because the tank inspection was a non-statutory inspection that received little attention, and the risk assessment method of large oil storage tanks in the actual project application was not mature enough. The basic information of 23 nominal volume one hundred thousand cubic meters crude oil tank was collected and sorted. 23 storage tanks under the application of risk assessment are all aboveground atmospheric storage tanks. 23 storage tanks are all floating-roof tanks, whose host materials include SPV490Q, 16MnR, Q235-B, and Q235-A; the containing medium for storage tank are crude oil, and time-to-use starts from August 2006 to April 2007. The implementation process of tank risk assessment was described, and the process of implementing risk assessment was described in detail. The method of risk trend analysis is studied, and the routine maintenance and maintenance suggestions are given. The results show that the risk assessment method for the tank can be implemented, and has been recognized by the tank management unit, providing a rare real case.

Crude Oil Storage Tank Refurbishment Duration Optimized by 40% Through Advanced Techniques

2021 ◽  
Author(s):  
Saeed Mubarak Al Yammahi ◽  
Mohamed Obaid Al Kaabi ◽  
Rashid Hamad Al Zaabi ◽  
Sachin Ashok Shendge ◽  
Manly Vista Dizon ◽  
...  
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Storage Tanks ◽  
Project Schedule ◽  
Large Capacity ◽  
Safety Critical ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Detailed Assessment ◽  
Oil Company

Abstract Crude storage tanks are an important asset in every oil company. Having adequate storage capacities is important economically and ensure steady supply of oil in the market. Hence, taking a huge tank out of service for refurbishment is technically and safety critical, and as much as putting it back into service on time. This paper presents an advanced methodology and assessment of tank refurbishment process of large capacity Crude Storage Tanks, in compliance with the International Codes and Standards resulting in optimization of the project schedule by approximately 40% as compared to conventional methodology of refurbishment. By deploying the advance techniques, detailed assessment, and dynamic planning we have been able to accelerate the completion of the project, improve tank availability time without compromising with the Integrity and HSE.

Design of Nuclear Safety-Related Underground Diesel Fuel Oil Storage Tanks

2010 ◽  
Author(s):  
Shen Wang ◽  
Necip O. Akinci ◽  
William H. Johnson ◽  
Luis M. Moreschi
Keyword(s):  
Diesel Fuel ◽  
Pressure Vessel ◽  
Storage Tank ◽  
Power Plants ◽  
Free Field ◽  
Fuel Oil ◽  
Allowable Stress ◽  
Storage Tanks ◽  
Element Analysis ◽  
Oil Storage

Diesel fuel oil storage tanks are critical components for safety of nuclear power plants. Proper functioning of the emergency diesel generators during an earthquake depends on the fuel oil supplied from the storage tank. Failure of the tank, nozzles or fuel pipes can result in contamination and/or leakage of the fuel. The allowable stress limits and design charts for above ground tanks, which are provided in the ASME Boiler and Pressure Vessel Code for a pressure vessel, are occasionally adopted in the design of underground tanks. However, the analytical methodology for evaluation of stresses in the buried tanks requires detailed analysis different from that for a typical pressure vessel. Soil-structure and fluid-structure interaction effects need to be considered in the analysis for simulation of the actual static and seismic loads. Therefore, advanced simulation techniques and finite element analysis tools have been used by several researchers to evaluate buried tanks. Simple, but acceptably accurate techniques for comprehensive evaluation of underground storage tanks have not been established. This study presents simplified evaluation techniques for a diesel fuel storage tank using fundamental concepts. The diesel fuel oil storage tanks considered here are cylindrical and oriented with their axes in the horizontal direction. The static overburden and seismic pressures cause ovaling of the tank and generate significant bending stresses, which are not addressed in the pressure vessel design approach. The simplified tank evaluation proposed here includes the ovaling effect under static overburden, seismic and sloshing loads. Earthquake induced stresses in hoop and longitudinal directions are calculated using the free field approach and the classical Housner Method is employed in the sloshing analysis. Allowable stress and buckling of the tank wall are checked against corresponding criteria.

Treating crude oil storage tank sludge by catalytic process and recovering valuable hydrocarbons

2021 ◽  
Author(s):  
Kamalesh Gupta ◽  
Arun Kumar Jana ◽  
Mousumi Chakraborty ◽  
Parimal A. Parikh
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Catalytic Process ◽  
Oil Storage ◽  
Oil Storage Tank

The Finite Element Analysis and the Multi-Objective Optimization Design of Spindle Systems of CNC Gantry Machine Tools

2016 ◽  
Vol 693 ◽  
pp. 243-250
Author(s):  
Zhi Zhong Guo ◽  
Yun Shun Zhang ◽  
Shi Hao Liu
Keyword(s):  
Machine Tools ◽  
Optimization Design ◽  
Multi Objective Optimization ◽  
Element Analysis ◽  
Multi Objective ◽  
Vibration Resistance ◽  
Design Variables ◽  
Force Coupling ◽  
The Finite Element Analysis ◽  
Spindle Structure

It is discovered that the vibration resistance of spindle systems needs to be improved based on the statics analysis, modal analysis and heating-force coupling analysis of spindle systems of CNC gantry machine tools. The design variables of optimization are set according to sensitivity analysis, multi-objective and dynamic optimization design is realized and its designing scheme is gained for spindle structure. The research results show that vibration resistance can be improved without change of the quality and static property of spindle systems of CNC gantry machine tools.

CHARACTERIZATION OF SLUDGE WAXES FROM CRUDE OIL STORAGE TANKS HANDLING OFFSHORE CRUDE

1997 ◽  
Vol 15 (7-8) ◽  
pp. 755-764 ◽  
Author(s):  
S.A. Fazal ◽  
R. Rai ◽  
G.C. Joshi
Keyword(s):  
Crude Oil ◽  
Storage Tanks ◽  
Oil Storage

The Rod Force Law Analysis of 600MW Air Cooling Tower

2014 ◽  
Vol 945-949 ◽  
pp. 1135-1138
Author(s):  
Tao Liang ◽  
Chun Ling Meng ◽  
Yang Li ◽  
Xiu Hua Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Optimization Design ◽  
Cooling Tower ◽  
Air Cooling ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
The Cost

The finite element analysis of large air cooling tower was carried out using ABAQUS. On the basis of strength above,8 types of the axial force are analyzed and summarized, find valuable rules, and put forward the further optimization design. So that it can satisfy the strength and stability of air cooling tower, the structure is more reasonable, reduce weight, reduce the cost.

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