scholarly journals Research and verification of internal and external measurement methods of large oil storage tanks capacity based on 3D lasers canning

2021 ◽  
Vol 245 ◽  
pp. 01053
Author(s):  
Xianlei Chen ◽  
Yexin Xu ◽  
Yeyong Wang ◽  
Zenan Wu ◽  
Junxue Chen ◽  
...  
Keyword(s):  
Storage Tank ◽  
Measurement Method ◽  
Laser Scanner ◽  
Storage Tanks ◽  
Data Comparison ◽  
Oil Storage ◽  
Inner Radius ◽  
Measurement Results ◽  
Internal Measurement ◽  
The Difference

Nowadays, as an important tool for petrochemical enterprises to store and transport various petrochemical products, large oil storage tanks are highly praised by a large number of oil enterprises because of their characteristics of large capacity and stable storage. For the same storage tank, on the premise of elevation determination, the accuracy of the measurement results for capacity actually mainly depends on the accurate measurement of the inner radius of each circle plate. In this paper, a 10000m3 stroage tank T1 is selected to measure the inner radius by strapping tape method, total station internal measurement method and 3D laser scanner internal and external measurement method. Through data comparison, the accuracy of the above methods for measuring the inner radius of the first circle plate of storage tank is discussed and verified, and the difference of measurement results and accuracy between internal and external measurement of ten circle plates of storage tank by 3D laser scanner. It is concluded that the external measurement method of 3D laser scanner based on the principle of cloud to cloud splicing has poor result in tank’s inner radius measurement, but it is feasible based on the principle of target ball splicing.

scholarly journals Study on the Evaluation of Radiant Heat Effects of Oil Storage Tank Fires Due to Environmental Conditions

2020 ◽  
Vol 34 (1) ◽  
pp. 72-78 ◽  
Author(s):  
Jeomdong Lee ◽  
Juyeol Ryu ◽  
Seowon Park ◽  
Myong-O Yoon ◽  
Changwoo Lee
Keyword(s):  
Wind Speed ◽  
Environmental Conditions ◽  
Storage Tank ◽  
Radiant Heat ◽  
Maximum Temperature ◽  
Storage Tanks ◽  
Oil Storage ◽  
Heat Effects ◽  
Oil Storage Tank ◽  
The Difference

In this paper, the risk of damages to humans and properties due to fire explosions in gasoline storage tanks is identified, and the effects of radiant heat on adjacent tanks are evaluated to present the necessary area to secure safety. A simulation was conducted to evaluate the effect of radiant heat (Maximum emission) on adjacent tanks in an oil storage tank fire due to environmental conditions (Wind speed and temperature) in the Northern Gyeonggi Province. The result indicated that the radiant heat released in the fire of an oil storage tank was increased by approximately 1.9 times by the maximum wind speed and the difference occurred in the range of 700~800 kW by the maximum temperature. If a storage tank fire occurs, securing approximately 34.4 m of holding area is necessary. In the future, evaluating the radiant heat emitted by the fire of gasoline storage tanks will be required by applying various environmental conditions, and through this, research on specific and quantitative holding area is required.

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.

scholarly journals Analysis Of Form Coefficient For Measuring Gross Tonnage Of Wooden Ship Based On Domestic Meansurment Method Of Indonesia

2021 ◽  
Vol 3 (2) ◽  
pp. 165-171
Author(s):  
Habibi Amal ◽  
Syamsul Asri ◽  
Andi Ardianti ◽  
Suandar Baso
Keyword(s):  
Measurement Method ◽  
Processing Method ◽  
Volume Factor ◽  
Size And Shape ◽  
Data Processing Method ◽  
Measurement Results ◽  
Mathematical Equations ◽  
The Difference ◽  
Actual Size

Most of the traditional wooden boats in Sinjai and Bone Districts were measured using the domestic measurement method, ship owners with sizes <GT 7 and <GT 30 refused to verify their vessels. Ship owners feel disadvantaged in terms of policies, permits, landing fees, subsidized fuel rations and so on. This study aims to determine the characteristics of the size and shape of traditional wooden ships, analyze and compare the results of the calculation of the gross tonnage (GT) of the ship which is calculated based on the actual size and shape of the ship (real body) with the ship calculated using domestic measurement methods and compiling mathematical equations in determining the value of the ship volume factor based on the main size to calculate the GT. The data processing method was carried out by using the Slovin technique with a population of 49 ship data for the determination of the minimum sample and then entered into the interval class. The results showed that the traditional wooden ships in Sinjai and Bone Regencies have geometric characteristics that are not much different from one another, but the main sizes are quite varied. The larger the main size of the ship, the greater the difference in GT calculations when using the volume factor value based on the domestic measurement method compared to using the volume factor value generated by real body calculations. The formula for the volume factor value (Cb or f) = 0.238 Log ((LBH)1/3) + 0.5134 can be used to determine the volume factor, especially for ships operating in the Sinjai and Bone Regencies as well as an initial reference for measurements by measuring experts ship so that moderate measurement results are obtained.

scholarly journals Comparison of the performance of a microwave based and an NMR based biomaterial moisture measurement instruments

ACTA IMEKO ◽  
2016 ◽  
Vol 5 (4) ◽  
pp. 88
Author(s):  
Petri Juhani Österberg ◽  
Martti Heinonen ◽  
Maija Johanna Ojanen-Saloranta ◽  
Anssi Jaakko Mäkynen
Keyword(s):  
Moisture Content ◽  
Measurement Method ◽  
Reasonable Agreement ◽  
Measurement Methods ◽  
Measurement Instruments ◽  
Reference Measurement ◽  
Moisture Measurement ◽  
Measurement Results ◽  
The Difference

This article compares the performance of an NMR-based and a microwave based moisture measurement instruments designed for biomaterials. The conventional moisture measurement method, Loss-on-Drying (LoD) serves as a reference measurement for both instruments. Six different biomaterials at three moisture content levels were measured with the microwave instrument and five biomaterials with the NMR instrument. After instrument calibrations, the difference and variation of the measurement results for parallel samples and the repeatability of the NMR and microwave instruments were estimated. Reasonable agreement between the measurement methods was achieved.

Tsunami Damage to Oil Storage Tanks in the MW9.0 2011 Tohoku, Japan Earthquake

2015 ◽  
Author(s):  
Ken Hatayama
Keyword(s):  
Storage Tank ◽  
Prediction Method ◽  
Tohoku Earthquake ◽  
Storage Tanks ◽  
The 2011 Tohoku Earthquake ◽  
Inundation Depth ◽  
Oil Storage ◽  
Tsunami Damage ◽  
Oil Storage Tank ◽  
Actual Damage

The Mw9.0 2011 Tohoku, Japan earthquake tsunami damaged 418 oil storage tanks located along the Pacific coast of the Hokkaido, Tohoku, and Kanto Districts of Japan. A wide variety of damage was observed, including movement and deformation of the tank body, scouring of the tank base and ground, and movement or structural fracture of the pipe. In total, 157 of the 418 tanks were moved by the tsunami. By comparing the severity of damage with the inundation depth of the tsunami experienced by the oil storage tank, a fragility curve projecting the damage rate for plumbing is presented, and a rough but easy-to-use method of predicting tsunami damage to an oil storage tank from a given inundation depth is also presented: (i) for inundation depths of 2–5 m, tanks suffer damage to their plumbing, and small tanks (capacity < 100 m3) and empty larger tanks may be moved; (ii) for inundation depths of greater than 5 m, most tanks are moved. The validity of the previously-proposed tsunami tank-movement prediction method is first examined. A comparison of the method’s predictions with the actual damage data from the 2011 Tohoku earthquake tsunami indicates a high hit rate of 76%.

Optimization Calculation Method of Wall Thickness for Large Oil Storage Tank Made of High Strength Steel

2015 ◽  
Author(s):  
Haigui Fan ◽  
Zhiping Chen ◽  
Futeng Wan
Keyword(s):  
Wall Thickness ◽  
High Strength Steel ◽  
Storage Tank ◽  
Circumferential Stress ◽  
High Strength ◽  
Optimization Method ◽  
Storage Tanks ◽  
Oil Storage ◽  
Optimization Calculation ◽  
Oil Storage Tank

Optimization calculation method determining wall thickness for large oil storage tank made of high strength steel is investigated in this paper. Taking three oil storage tanks with different volumes of 10×104 m3, 15×104 m3 and 20×104 m3 for examples, the wall thickness calculation methods of API 650, GB 50341, JIS B 8501 and BS EN 14015 have been analyzed and compared. Results show that as the volume of oil storage tank increases, some wall thickness calculation results of the standards have been larger than the allowable value, leading to the unreasonable distribution of the wall circumferential stress. The wall thickness calculation result applying the method of API 650 is more reasonable than other standards. While for the tanks made of high strength steel, like 12MnNiVR (GB 50341), the yield ratio of the steel has reached 0.803, which is larger than the upper limit value of API 650. In order to make up the deficiency, an optimization method based on API 650 is presented, which considers the effects of yield strength, tensile strength and yield ratio on the determination of allowable stress. Taking the 20×104 m3 oil storage tank and selecting a proper welded joint efficiency, the wall thickness is calculated by the presented optimization method. The wall thickness calculation result is more reasonable and the circumferential stress distribution is more homogeneous when the safety factor of tensile strength is taken to be 2.4. Results show that the optimization method is applicable to the thickness calculation of oil storage tanks made of high strength steel.

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.

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

Buckling of Oil Storage Tanks in SPPL Tank Farm During the 1979 Imperial Valley Earthquake

1987 ◽  
Vol 109 (2) ◽  
pp. 249-255 ◽  
Author(s):  
C.-F. Shih ◽  
C. D. Babcock
Keyword(s):  
Storage Tank ◽  
Reasonable Agreement ◽  
Laboratory Model ◽  
Base Excitation ◽  
Storage Tanks ◽  
Imperial Valley ◽  
Tank Farm ◽  
Oil Storage ◽  
Buckling Behavior ◽  
Oil Storage Tank

An oil storage tank that suffered damage during the 1979 Imperial Valley earthquake is studied using a laboratory model. The tank is unanchored and includes a floating roof. The tank is subjected to a single horizontal axis base excitation. Buckling is studied under both harmonic and simulated earthquake base motion. The model buckling results are in reasonable agreement with the field observations. It was also found that the floating roof has no effect on the buckling behavior. Comparison with the API design provisions shows that the empirical model used as the basis of the code for both tip-over and buckling have little resemblance to the actual tank behavior.

scholarly journals Massive Fire Incidents of Multiple Aboveground Storage Tanks due to Vapor Cloud Explosion

2019 ◽  
Vol 2 (2) ◽  
pp. 102-108
Author(s):  
Shoichi Yoshida
Keyword(s):  
Storage Tank ◽  
Storage Facility ◽  
Storage Tanks ◽  
The Past ◽  
Oil Storage ◽  
The World ◽  
Vapor Cloud

The vapor cloud explosion (VCE) begins with a release of a large quantity of flammable vaporing liquid from a storage tank, transportation vessel or pipeline. If VCE occurs in an oil storage facility, multiple tanks burn simultaneously. There is no effective firefighting method for multiple tanks fire. It will be extinguished when oil burned out spending several days. Many incidents of multiple tanks fire due to VCE have occurred all over the world in recent 50 years. This paper reviews the past 6 incidents of multiple tanks fire due to VCE.

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