scholarly journals Analysis of hidden safety hazards and treatment suggestions when the floating roof of oil storage tanks falls to the bottom

2021 ◽  
Vol 267 ◽  
pp. 01019
Author(s):  
Jiahao Yang ◽  
Fan Zhou ◽  
Weixing Wu ◽  
Jun Zhang ◽  
Shaoqiang Chen ◽  
...  
Keyword(s):  
Control Measures ◽  
Storage Tanks ◽  
Gas Mixing ◽  
Safety Hazards ◽  
Floating Plate ◽  
Oil Storage ◽  
Potential Safety ◽  
Explosion Limit ◽  
Oil Gas ◽  
Production And Operation

In the actual production and operation of enterprises, it is sometimes inevitable that the floating roof will fall to the bottom. This paper calculates the explosion limit of the mixture of oil gas under the floating roof, and confirms that the concentration of oil gas will be within the explosion limit under certain circumstances. Through the monitoring and analysis of the oil-gas mixing space below the floating roof, corresponding control measures are proposed to deal with the potential safety hazards of the floating plate falling to the bottom.

scholarly journals Corrosion and protection of island and offshore oil storage tank

2021 ◽  
Vol 252 ◽  
pp. 03035
Author(s):  
Miaoke Feng ◽  
Kaining He ◽  
Yanhong Zhao
Keyword(s):  
Corrosion Protection ◽  
Marine Environment ◽  
Storage Tank ◽  
Storage Tanks ◽  
Safety Hazards ◽  
Oil Storage ◽  
Potential Safety ◽  
Oil Storage Tank ◽  
Offshore Oil

This article is mainly based on the characteristics of the marine environment of islands and coastal seas and the current corrosion problems of storage tanks as well as their main locations, analyse the reasons for their formation and consider the potential safety hazards, so as to propose several effective storage tank corrosion protection methods, which has important positive significance for the long-term development of islands and coastal seas oil storage tanks.

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

Study on Food Safety and Green Food Packaging

2012 ◽  
Vol 550-553 ◽  
pp. 1915-1918
Author(s):  
Lin Lin Shang ◽  
Wei Feng
Keyword(s):  
Food Safety ◽  
Human Health ◽  
Food Packaging ◽  
Packaging Materials ◽  
Safety Hazards ◽  
Safety Problem ◽  
Green Food ◽  
Potential Safety ◽  
Safe Food

Safe food packaging is of great significance in solving food safety problem, which can ensure the quality of the food. At the same time protecting the environment should be taken into consideration, and therefore sound food packaging is not only safe to human health but also green to the environment. In this paper potential safety hazards in food packaging materials and how to develop green food packaging are discussed at length.

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.

scholarly journals Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries †

Inorganics ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 69 ◽  
Author(s):  
Yichao Cai ◽  
Yunpeng Hou ◽  
Yong Lu ◽  
Jun Chen
Keyword(s):  
High Performance ◽  
Noble Metals ◽  
Catalytic Mechanism ◽  
Low Cost ◽  
Rate Capability ◽  
Positive Electrode ◽  
Safety Hazards ◽  
Environmental Friendliness ◽  
Potential Safety ◽  
Lithium Oxygen Batteries

Rechargeable aprotic lithium-oxygen (Li-O2) batteries have attracted significant interest in recent years owing to their ultrahigh theoretical capacity, low cost, and environmental friendliness. However, the further development of Li-O2 batteries is hindered by some ineluctable issues, such as severe parasitic reactions, low energy efficiency, poor rate capability, short cycling life and potential safety hazards, which mainly stem from the high charging overpotential in the positive electrode side. Thus, it is of great significance to develop high-performance catalysts for the positive electrode in order to address these issues and to boost the commercialization of Li-O2 batteries. In this review, three main categories of catalyst for the positive electrode of Li-O2 batteries, including carbon materials, noble metals and their oxides, and transition metals and their oxides, are systematically summarized and discussed. We not only focus on the electrochemical performance of batteries, but also pay more attention to understanding the catalytic mechanism of these catalysts for the positive electrode. In closing, opportunities for the design of better catalysts for the positive electrode of high-performance Li-O2 batteries are discussed.

scholarly journals Lowering uncertainty in crude oil measurement by selecting optimized envelope color of a pipeline

2011 ◽  
Vol 15 (1) ◽  
pp. 91-104 ◽  
Author(s):  
Mahmood Farzaneh-Gord ◽  
Alireza Rasekh ◽  
Morteza Saadat ◽  
Amin Nabati
Keyword(s):  
Solar Radiation ◽  
Crude Oil ◽  
Temperature Rise ◽  
Volume Measurement ◽  
Storage Tanks ◽  
Exterior Surface ◽  
Oil Storage ◽  
Gravity Effects ◽  
Oil Export ◽  
Measured Volume

Lowering uncertainty in crude oil volume measurement has been widely considered as one of main purposes in an oil export terminal. It is found that crude oil temperature at metering station has big effects on measured volume and may cause big uncertainty at the metering point. As crude oil flows through an aboveground pipeline, pick up the solar radiation and heat up. This causes the oil temperature at the metering point to rise and higher uncertainty to be created. The amount of temperature rise is depended on exterior surface paint color. In the Kharg Island, there is about 3 km distance between the oil storage tanks and the metering point. The oil flows through the pipeline due to gravity effects as storage tanks are located 60m higher than the metering point. In this study, an analytical model has been conducted for predicting oil temperature at the pipeline exit (the metering point) based on climate and geographical conditions of the Kharg Island. The temperature at the metering point has been calculated and the effects of envelope color have been investigated. Further, the uncertainty in the measurement system due to temperature rise has been studied.

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