Design and Construction for Large Underground LNG Storage Tank─TOHO GAS Midorihama Factory No.3 LNG Tank─

2016 ◽  
Vol 54 (10) ◽  
pp. 1015-1021
Author(s):  
T. Sasaki ◽  
T. Hayashi ◽  
K. Maeda ◽  
K. Sakurai
Keyword(s):  
Storage Tank ◽  
Lng Tank ◽  
Design And Construction

Thermal Analysis on the Shell Stiffeners of Double Steel Wall LNG Storage Tank

2011 ◽  
Vol 105-107 ◽  
pp. 403-407
Author(s):  
Xiao Chun Zhang ◽  
Yuan Qi Cai
Keyword(s):  
Thermal Analysis ◽  
Structural Design ◽  
Storage Tank ◽  
Thermal Field ◽  
Local Buckling ◽  
Thermal Design ◽  
Normal Operation ◽  
Analysis Of Results ◽  
Design Requirements ◽  
Lng Tank

Shell stiffeners are used effectively to prevent preferential local buckling of LNG tank shell. In this paper, Finite element method (FEM) is applied to pay attention to the thermal analysis on the shell stiffeners of double steel wall LNG storage tank. The structural requirements according to British Standard 7777-2:1993 has been considered and then some dimensional adjustments of shell stiffeners are made to evaluate their influence on the thermal field of double steel wall LNG storage tank. Temperature distributions and heat flux of different dimensional shell stiffeners are presented. Though the analysis of results, it puts forward the conclusion that the dimensional design of shell stiffeners used in double steel wall LNG storage tank shall take not only the structural design requirements but also the thermal design ones into consideration in order to finally save cost in both construction and normal operation.

scholarly journals Energy Saving through Efficient BOG Prediction and Impact of Static Boil-off-Rate in Full Containment-Type LNG Storage Tank

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5578
Author(s):  
Mohd Shariq Khan ◽  
Muhammad Abdul Qyyum ◽  
Wahid Ali ◽  
Aref Wazwaz ◽  
Khursheed B. Ansari ◽  
...  
Keyword(s):  
Storage Tank ◽  
Liquid Level ◽  
Unequal Distribution ◽  
Strong Function ◽  
Heat Leakage ◽  
Simulation Results ◽  
Lng Tank ◽  
The Impact ◽  
Lower Liquid ◽  
Vapor Temperature

Boil-off gas (BOG) from a liquefied natural gas (LNG) storage tank depends on the amount of heat leakage however, its assessment often relies on the static value of the boil-off rate (BOR) suggested by the LNG tank vendors that over/under predicts BOG generation. Thus, the impact of static BOR on BOG predictions is investigated and the results suggest that BOR is a strong function of liquid level in a tank. Total heat leakage in a tank practically remains constant, nonetheless the unequal distribution of heat in vapor and liquid gives variation in BOR. Assigning the total tank heat leak to the liquid is inappropriate since a part of heat increases vapor temperature. At the lower liquid level, BOG is under-predicted and at a higher level, it is over-predicted using static BOR. Simulation results show that BOR varies from 0.012 wt% per day for an 80% tank fill to 0.12 wt% per day at 10% tank fill.

Research of Large LNG Tank Structure

2014 ◽  
Vol 1070-1072 ◽  
pp. 378-382
Author(s):  
Ting Ke Li ◽  
Jia Di Li ◽  
Li Fu Xiao ◽  
Wei Li
Keyword(s):  
Storage Tank ◽  
Material Selection ◽  
Type Material ◽  
Size Optimization ◽  
Construction Technology ◽  
Cryogenic Storage ◽  
Lng Tank ◽  
Over Time

In recent years, the demand of Large LNG storage tank increases over time, but large LNG cryogenic storage tank has not yet established a series of standards and norms, and tank construction technology is also lagging behind. Aiming at the design of the tank form a single, smaller, did not tackle the issue of, this paper mainly discusses from Large LNG tanks, such as type, material selection, structure ,size optimization and so on, which can provide reference for independent construction of storage tank.

Research on Infrared Thermal Imaging Technique for the Sidewall of LNG Storage Tank

2014 ◽  
Vol 511-512 ◽  
pp. 425-428
Author(s):  
Jie Jiang ◽  
Wen Da Zhu ◽  
Gong Sheng Yang ◽  
Jing Peng Yan ◽  
Nan Jin Gao ◽  
...  
Keyword(s):  
Natural Gas ◽  
Thermal Imaging ◽  
Storage Tank ◽  
Imaging Technique ◽  
Temperature Drop ◽  
Liquefied Natural Gas ◽  
Thermal Imager ◽  
Gas Temperature ◽  
Infrared Thermal Imaging ◽  
Lng Tank

Liquefied natural gas (LNG) is obtained by cooling the gas temperature to -162 degree. Problems with the steel cans, the insulation layer or the concrete tank of the LNG tank can lead to changes of the temperature, local temperature decreases, and the safety of the tank is threatening. Through the combination of many sets of infrared thermal imager to monitor the temperature of the LNG storage tank’s sidewall, analyze the heat imagine, establish the corresponding relationship between the locations on the sidewall of the LNG tank and on the heat imagine, determine the position of the temperature point on the tank wall. Infrared thermal imaging technique for the sidewall of LNG storage tank can find out the heat abnormal conditions and fixing the temperature drop area in time, and provide powerful guarantee for the safe storage of the liquefied natural gas.

Numerical Analysis of Ring Beam Effect on the Modal of LNG Storage Tank

2014 ◽  
Vol 638-640 ◽  
pp. 172-177
Author(s):  
Geng Chen ◽  
Jia Qu ◽  
Chun Yu Tian
Keyword(s):  
Dynamic Response ◽  
Storage Tank ◽  
Vibration Mode ◽  
Mode Shapes ◽  
Response Analysis ◽  
Dynamic Response Analysis ◽  
Inherent Frequency ◽  
Beam Parameters ◽  
Lng Tank ◽  
Ansys Workbench

LNG storage tank is an important department in the gas receiving station. LNG in the tank is flammable and explosive medium, once the tank damaged, disasters may be happened. So researching the dynamic response analysis is very necessary. In this paper, modal analysis of LNG outside tank were performed by ANSYS Workbench, the first six orders of mode shapes and their frequencies of LNG outside tank were concluded. Contrast vibration mode and natural frequency of the LNG storage tanks with ring beam and no ring beam, the influence of ring beam of LNG tank mode has been discussed. Conduct a series experiment by change the parameters of the ring beam, Parameters for ring beam effect on the inherent frequency and vibration mode of LNG outside tank has been researched. This research has provided the provided the reliable basis for the safety using of tanks and has built the base of the further dynamic response analysis.

scholarly journals Stability Analysis of the Foundation of Hazardous Material Storage Tank for Preventing Leakage Accidents

2020 ◽  
Vol 34 (4) ◽  
pp. 96-100
Author(s):  
Jong-Jin Lim ◽  
Jae-Hyun Ku
Keyword(s):  
Numerical Analysis ◽  
Storage Tank ◽  
Fem Analysis ◽  
Hazardous Materials ◽  
Industry Cluster ◽  
3D Fem ◽  
Influence Zone ◽  
Cluster Area ◽  
Adequate Design ◽  
Design And Construction

The leakage of hazardous materials due to the defect in storage tank foundations is likely to cause tremendous fire disasters in the industry cluster area. Thus, adequate design and construction of the tank foundation is required for preventing tank leakage. In this study, four types of typical tank foundations were classified and modeled for 3D FEM analysis to perform stability evaluation on tank foundations. Furthermore, numerical analysis indicated that stress concentration just below the tank shells is 40 times that at the tank center. The settlement influence zone is about the tank radius and tank diameter in the horizontal and vertical directions, respectively. Thus, the appropriate guidelines for the design and construction of tank foundations were suggested via a comparison assessment of the numerical analysis results on the stress distribution and displacement of the tank foundations.

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