Analysis and Application of Radius Calculation Model for Boilover in Crude Oil Tank Fire

2013 ◽  
Vol 860-863 ◽  
pp. 1574-1581
Author(s):  
Qing Gong Li ◽  
Zhen Chen ◽  
Miao Zhang ◽  
Wen Hua Song ◽  
Ling Yue Lv
Keyword(s):  
Storage Tank ◽  
Large Scale ◽  
Influence Factors ◽  
Calculation Model ◽  
Simple Estimate ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Influence Of Water ◽  
Oil Tank ◽  
Property Losses

With the development of oil storage tank is towards large-scale, boilover is becoming a greater threat to surroundings. The main damage form of boilover is high-temperature thermal radiation and boil-over in oil tank fires. Among them, boil over can cause great casualties and property losses, and easy to cause the disaster spread. This article first analyzes the influence factors of boilover and the intensity, then further creates radius calculation model for boilover. By calculating and analyzing the boilover radius of tank with different sizes and oils stored, the accuracy of model is verified. The results also indicate that the model is effective and the calculating error is fairly small when the tank diameter is less than 10m, otherwise is suitable for simple estimate only. The influence of water content in oil and the viscosity on boilover radius is non-linear, and there is a maximum.

The Calculation Model and Correction Method of Identifying Deflexion of Oil Tank

2013 ◽  
Vol 380-384 ◽  
pp. 35-38
Author(s):  
Dong Bing Liu ◽  
Wen Bin Liu
Keyword(s):  
Functional Relationship ◽  
Storage Capacity ◽  
Vertical Direction ◽  
Correction Method ◽  
Calculation Model ◽  
Tank Model ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Oil Tank ◽  
Integral Knowledge

In the paper,using geometry and integral knowledge, the functional relationship is determined between standard oil height and oil storage capacity when oil tank doesnt change position.Then we study that the location of tank can incline in vertical direction furtherly, and compare the theoretical calculation with experimental data .Finally, factual oil storage tank model is discussed.

Studies of Fuel-Air Mixture Explosion Characteristics and Structure Fracture and Damage in Large-Scale Metal Oil Storage Tank

2006 ◽  
Vol 324-325 ◽  
pp. 1031-1034
Author(s):  
Yang Du ◽  
Jian Feng Gao ◽  
Xin Sheng Jiang
Keyword(s):  
Numerical Simulation ◽  
Shock Waves ◽  
Storage Tank ◽  
Large Scale ◽  
Simulation Experiment ◽  
Frequent Occurrence ◽  
Oil Storage ◽  
Oil Storage Tank

The fuel-air mixture explosion incidents in the large-scale metal oil storage tank are frequent occurrence and rapidly extend because of the tank structure being fractured and damaged by the fuel-air mixture explosion. In this paper, the simulation experiment and numerical simulation has been carried out for the fuel-air mixture explosion in the large-scale metal storage tank. The shock waves characteristic of the explosive pressure has been studied and discussed. The fracture and damage effects caused by the shock waves characteristic to the tank structure has been analyzed and discussed too.

Study on the Cause of Oil Tank Fire and Fire Prevention Countermeasure

2013 ◽  
Vol 864-867 ◽  
pp. 866-870
Author(s):  
Bing Qiang Wang
Keyword(s):  
Storage Tank ◽  
Raw Materials ◽  
Fire Prevention ◽  
Energy Strategy ◽  
Tank Farm ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Farm Scale ◽  
Oil Tank ◽  
Fire Accident

Oil is a kind of important chemical raw materials, countries have put oil as an important sources of energy and actively expanded its strategic oil reserve along with our country energy strategy adjustment. The number of oil storage increases constantly, the tank farm scale expands unceasingly and fire accident of oil storage tank rises constantly. So it is an important measure for preventing the oil tank fire to analyze reason of oil tank fire and adopt corresponding fire prevention countermeasures.

The Remaining Life Prediction and Internal Inspection Interval Analysis for Large-Scale Crude Oil Storage Tank

2010 ◽  
Author(s):  
Jian Shuai ◽  
Kejiang Han
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Life Prediction ◽  
Large Scale ◽  
Extreme Value Distribution ◽  
Bottom Plate ◽  
Remaining Life ◽  
Oil Storage ◽  
Inspection Interval ◽  
Oil Storage Tank

As an important production facility, storage tank plays a more and more important role in the storage and transportation of crude oil and chemical product. The remaining life prediction of storage tank is to forecast the thinning trend of plate thickness, and forecast remaining life on the premise that remaining strength of storage tank meets the tank operation and safety requirements. Maximum corrosion depths of tank bottom plate obey the maximum extreme value distribution. Based on maximum extreme value distribution and statistics of corrosion data, the calculation formula of the remaining life prediction for large-scale crude oil storage tank was obtained by formula derivation. Compared with API STD 653 and EEMUA 159, the inspection interval specified by China standard SY/T 5921 is relatively conservative. The remaining life of a certain crude oil storage tank (tank A) in china is determined by the remaining life of tank bottom plate. The remaining life of tank A at the reliability of 0.99, 0.999 and 0.9999 are 25 years, 20 years and 17 years, respectively. For the acceptable failure probability of 1×10−4, the inspection interval of tank A can be extended from required 5–7 years specified by China standard SY/T 5921 to 17 years. The remaining life of crude oil storage tank predicted by the method proposed in this paper can be used as an important reference in the determination of inspection interval and tank’s maintenance.

scholarly journals Dynamic Response of a 100,000 m3 Cylindrical Oil-Storage Tank under Seismic Excitations: Experimental Tests and Numerical Simulations

2018 ◽  
Vol 2018 ◽  
pp. 1-19 ◽  
Author(s):  
Honghao Li ◽  
Wei Zhao ◽  
Wei Wang
Keyword(s):  
Dynamic Response ◽  
Test Specimen ◽  
Storage Tank ◽  
Dynamic Responses ◽  
Tank Wall ◽  
Seismic Excitations ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Oil Tank ◽  
Simulation Results

Considering the disastrous consequences of the oil tank failure, it is of great importance to ensure the safety of the large-scale oil tank under earthquakes. This study sheds light on investigating the dynamic response of a prototype 100,000 m3 cylindrical oil-storage tank under various seismic excitations. The foundation of the tank is also considered in this study so that the obtained results are closer to the reality. Shaking table tests are conducted using a 1/20 scale liquid-tank-foundation system under various seismic excitations. The test results reveal that the dynamic responses such as accelerations and the deformation of the test specimen in the major and minor vibration directions do not differ significantly. Finite element models are constructed for the test specimen and the prototype tank and are validated through comparing the simulation results with the test data. The simulation results suggest that it might be necessary to stiffen the locations on the tank wall where the thickness of the tank wall changes because the stresses at such locations may be close or even exceed the yield strength of the structural steel under severe earthquakes.

Deformation Characteristic Evaluation of Large Oil Storage Tanks under the Planar Inclined Foundation

2013 ◽  
Vol 351-352 ◽  
pp. 786-789
Author(s):  
Da Wei Ji ◽  
Li Xin Wei ◽  
Xiao Yan Li
Keyword(s):  
Stress Distribution ◽  
Storage Tank ◽  
Large Scale ◽  
Deformation Characteristic ◽  
Oil Industry ◽  
Element Model ◽  
Storage Tanks ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
The Finite Element Model

Oil storage tank plays an important role in modern oil industry. The development of large-scale oil storage tanks has resulted in the complexity of stress distribution and deformation situation of tank wall and tank bottom. Especially in soft foundations, the tank structure is susceptible to various types of settlement deflections. The most common type is planar inclined foundation. In this paper, the finite element model of large-scale oil storage tank was built according to the pattern of design and the deformation characteristic and stress distribution of large storage tank under the planar inclined foundation was obtained. Considering the floating roof, the ultimate value of large storage tank under the planar inclined foundation is determined.

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