Digital fiber optic remote gauging system for oil storage tanks with temperature compensation

1994 ◽  
Author(s):  
Faji Wang ◽  
Lihua Fang ◽  
Qing Ye ◽  
Zhisheng Yang ◽  
Lihua Jing ◽  
...  
Keyword(s):  
Temperature Compensation ◽  
Fiber Optic ◽  
Storage Tanks ◽  
Oil Storage

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

Simplified Development Method of FEA Code for Sloshing of Floating Roof Tanks (Lagrangian Formulation for Axisymmetric Linear Problem)

2014 ◽  
Author(s):  
Shoichi Yoshida
Keyword(s):  
Linear Problem ◽  
Structural Integrity ◽  
Three Dimensional ◽  
Computational Time ◽  
Storage Tanks ◽  
Coupling Vibration ◽  
Development Method ◽  
Oil Storage ◽  
Fluid Behavior ◽  
Computer Codes

Floating roofs are widely used to prevent evaporation of content in large cylindrical aboveground oil storage tanks. The 2003 Hokkaido Earthquake caused severe damages to the floating roofs due to sloshing. These accidents became a cause to establish structural integrity of the floating roof tanks in sloshing. However, many designers do not have a solution for the sloshing of floating roof tanks except for three-dimensional FEA computer codes. The three-dimensional FEA requires a long computational time and expenses. The sloshing of floating roof tanks is a coupling vibration problem with fluid and structure. The simplified and convenient method has been desired for this solution. This paper presents a simplified development method of a FEA code in the axisymmetric linear problem. It is performed to modify an existing structural analysis code. The fluid behavior is formulated in terms of displacement as the Lagrangian approach.

Interferometric Fiber-Optic Electric Current Sensor for Industrial Application

2010 ◽  
Vol 437 ◽  
pp. 314-318 ◽  
Author(s):  
Nikolay I. Starostin ◽  
Maksim V. Ryabko ◽  
Yurii K. Chamorovskii ◽  
Vladimir P. Gubin ◽  
Aleksandr I. Sazonov ◽  
...  
Keyword(s):  
Electric Current ◽  
Industrial Application ◽  
Temperature Compensation ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Current Sensor ◽  
Sensor Output ◽  
Optic Sensor ◽  
Spun Fiber ◽  
Fiber Coil

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15 – 250 kA. A frequency band is 0 – 5000 Hz and a nonlinearity of a sensor output is ±0.15%.

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