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.

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.

scholarly journals Tank Wall Thermal Stress Analysis and Risk Prevention and Control of Crude Oil Storage Tank

2021 ◽  
Vol 39 (2) ◽  
pp. 541-549
Author(s):  
Xuejian Zhao
Keyword(s):  
Heat Transfer ◽  
Thermal Stress ◽  
Crude Oil ◽  
Storage Tank ◽  
Prevention And Control ◽  
Risk Prevention ◽  
Tank Wall ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
And Control

If the crude oil in storage tank is directly heated without considering its temperature distribution, several problems will occur, namely, the thermal expansion of crude oil, and the uneven thickness of the condensate layer, bringing difficulty to the safe management of crude oil storage and transport. However, few scholars have analyzed the temperature field distribution of crude oil storage tank (COST) under heating, or the internal force of COST under static force. Thus, this paper probes into the thermal stress of tank wall, and the risk prevention and control of COST. Firstly, the heat transfer properties of COST were analyzed, an energy balance model was constructed for COST, and several variables were selected to evaluate the heat transfer effect of the tank under different heating modes, including thermal design power, temperature rise rate, and heat energy utilization rate. Next, the cross-section of COST wall was selected for thermal stress analysis. Based on the extremes of circumferential and vertical thermal stresses, the weak parts of COST susceptible to risks like leakage were determined, and several measures and suggestions were presented for reducing the risks of crude oil storage and transport.

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.

Study on Damage of a Floating Roof-Type Oil Storage Tank due to Thermal Stress

2012 ◽  
Vol 232 ◽  
pp. 803-807 ◽  
Author(s):  
Yoshihiro Hirokawa ◽  
Haruki Nishi ◽  
Minoru Yamada ◽  
Shinsaku Zama ◽  
Ken Hatayama
Keyword(s):  
Thermal Stress ◽  
Optical Fiber ◽  
Stress Analysis ◽  
Storage Tank ◽  
Oil Refinery ◽  
Temperature Changes ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Oil Tank ◽  
Effective Analysis

Several cracks were found on some actual floating roofs of a crude oil tank in the oil refinery located in southern Japan. We assumed that one of reasons would be due to thermal stress caused by temperature changes during the day. In order to consider whether the thermal stress could the cause damages on the floating roof, strain and temperature were measured on the actual floating roof by using optical fiber gauges. Furthermore, thermal stress analysis was carried out as effective analysis.

Remote Inspection of a FPSO Unit Crude Oil Tank whilst still Producing

2021 ◽  
Author(s):  
Andrew Comley ◽  
Campbell Ross ◽  
Steve Moir
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Project Team ◽  
Oil Storage ◽  
Lessons Learnt ◽  
Oil Storage Tank ◽  
Oil Tank ◽  
Work Value ◽  
Remote Inspection ◽  
Team Engagement

In 2020, with the unit still producing a crude oil storage tank on the Bumi Armada owned and operated Armada Kraken FPSO was successfully inspected by Texo using a UAVS flown from outside the tank. This type of truly remote survey significantly reduces the risk to personnel, the survey time and the survey cost, whilst maintaining a survey standard that is close to that achieved by personnel entering the tank and utilising scaffolding. Lessons learnt in the following areas are discussed: • Detailed Scope of Work value, including potential & actual anomaly handling. • Careful pre-mobilisation briefing of the project team and Class surveyor. • Engagement with Bumi Armada personnel, onshore and offshore, and the Texo project team. • Engagement with DNVGL to enable the inspection to be Verification & Class credited. • Development by Texo of project specific procedures based on onshore trials. • Tank cleanliness and cleaning.

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
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