Ship Oil Spill Research Articles

Factor diagnosis and governance strategies of ship oil spill accidents based on formal concept analysis

Ship oil spill accidents have a prolonged duration, complex consequences, challenging cleaning and repairing efforts, and pose a significant threat to the environment, economy, and society. Eliminating irrelevant information and identifying key factors using traditional methods is challenging due to the complexity of the causes of ship oil spill accidents. To address this, this article sorts out the accident databases of the International Tanker Owners Pollution Federation (ITOPF) and eight national maritime administration agencies, and innovatively constructs a formal concept analysis (FCA) model based on reports of 100-plus ship oil spill accidents. The model results prove that improper operation, less complete ship equipment, large tonnage, and poor navigation conditions are the key factors. The different causal rules of oil spills in collision/contact, grounding, fire/explosion, and foundering are further compared and analyzed. Finally, corresponding improvement measures are put forward for the key factors of oil spills and different causal rules.

Assessment Model of Sudden Oil Spill Pollution in South China Sea Navigation Area Based on the Theory of Community of Marine Destiny

<p>In order to solve the problems of poor accuracy and long time-consuming of traditional methods in the assessment of sudden oil spill pollution from ships, this paper takes the navigation area in the South China Sea as the research object and proposes to build the assessment model of ship oil spill pollution. Based on the analysis of the transportation advantages of the South China Sea navigation area, the probability of ship collision and the relationship between the probability of ship oil spill and the ship tonnage are obtained. Based on the probability of ship oil spill in the South China Sea navigation area, the evaluation index system of oil spill pollution in the South China Sea navigation area is constructed to determine the oil spill pollution index and pollution level, and to determine the oil spill pollution level The weight of oil pollution index is used to build the assessment model of sudden oil spill pollution in South China Sea navigation area. The experimental results show that the accuracy of the evaluation model is always maintained at 90% and the evaluation time is short.</p>

Risk Evolution of Ship Oil Spill in the Three Gorges Reservoir Area

Ship oil spill accident will lead to enormous hazards in the Three Gorges Reservoir area. The risk mitigation of the ship oil spill is significant to the stakeholder of the maritime safety administration. To study the risk evolution of the ship oil spill in the Three Gorges Reservoir area, the framework of ship oil spill risk evolution was proposed according to the general definition of the risk; then, risk evolutions were analyzed from the perspectives of expected probability, system constraints of accident developing, and possible harmful consequences based on accidents analyses, simulation experiments, and structural equation model analysis. The results indicate that the system constraints of accident developing, such as the quantity of oil spills, free evolution time, and wind and flow conditions, have significant impacts on risk evolution of the ship oil spill after the occurrence of an accident in the Three Gorges Reservoir area.

Analysis on the impact of ship oil spill pollution on marine environmental risk

In this study, Zhanjiang port is taken as a typical sea area to study the influence of oil film on marine environment under the joint action of current and wind. In the simulation process, the final destination of the oil film after evaporation, emulsification, dissolution and sedimentation is considered. fter the oil spill accident, the probability of oil spill in the range of 1 ∼ 5km to the west of the leakage location is more than 70%; in dongtoushan Island, the probability of being affected by the oil spill can reach more than 40%; the probability of being affected by the oil spill in the marine reserve of Techeng island is more than 20%; the probability of the impact of oil spill on the restricted red line area of Mangrove in Nanshan island is less than 10%. In the sea area affected by oil spill, its marine life and ecology will also be affected.

Trajectory and weathering of oil spill in Daya bay, the South China sea

With the development of marine resources and marine transportation, oil spill accidents occur frequently which threaten the marine ecological environment and human life. In this paper, an oil spill model was established. The two-dimensional shallow water equation was discretized by the finite element weighted lumped mass method, and the time is discretized by the forward Euler scheme, then the planar two-dimensional hydrodynamic model was established. The model was verified by measure tidal level data. The oil particle drift model and oil spill weathering model were established in this paper, and it can be used to simulate the oil spill accidents on the sea area by inputting the terrain data, environmental conditions and oil spill information into the hydrodynamic model and oil spill model. The model is applied to Daya Bay, South China Sea, the oil spill behavior and destination under different residual currents were simulated and calculated, the pollution area of oil spill under clockwise residual flow is larger than that under anti-clockwise residual flow. The oil spill model is mainly used to simulate oil spill accidents on the sea surface such as ship oil spill accidents, and the simulation results can provide theoretical basis for taking effective emergency measures and risk assessment after oil spill.

Numerical Simulation of Ship Oil Spill in Arctic Icy Waters

This paper presents a three-dimensional numerical simulation model of an oil spill for application in emergency treatment methods under icy water conditions. The combined effects of wind, wave, current and ice implemented in our model correspond to Arctic Ocean conditions. A discrete element method combined with an overset grid was adopted to track the trajectory movements of oil film with medium-density ice floes and simulate the flow field of moving ice of large displacement in six degrees of freedom (6DOF). The probability of oil spill area extensions were estimated by a response surface method (RSM). Results showed reduced risk of pollution in icy water conditions and greater drift action of oil film. Accordingly, the spraying location and quantity of oil-dispersant could be rapidly specified.

Oil spill collection boom of ship based on negative pressure principle

The oil boom has played an important role in the control of ship oil spills, but the oil spill often spreads fast and the control ability of the oil boom is limited. If the oil spill cannot be absorbed and processed in time, the traditional oil boom is difficult to grow. This work designs a new type of oil spill collection fence based on the principle of negative pressure. The main function of this device is to control the area of oil spill area and recover oil spill in time. The device is a unit system and can be folded, which is convenient for the ship to store the device. The device is mainly composed of a water surface oil spill collector, a new type oil boom, a pressure pump and a ship’s fast oil-water separation device. The oil control part relies on the function design of the traditional oil boom to enable timely control of oil spill on the water surface. The oil spill recovery function is realized by the cooperation of a surface oil spill collector based on the principle of negative pressure and a new type of oil fence. Compared with the traditional ship oil spill treatment, the device studied in this project has the characteristics of timely, fast and recoverable oil spill. It can make a significant contribution to maintaining the balance of the marine ecosystem.

Research and Design of Intelligent Management Platform for Ship Oil Spill Emergency Equipment Depots Based on Internet of Things

Due to the low efficiency, informatization and decision-making ability of the traditional ship oil spill emergency equipment depots, an intelligent management platform for ship oil spill emergency equipment depots based on the Internet of things technology is proposed. The paper designs an intelligent management platform for the ship oil spill emergency equipment depots, which adopts the idea of modular design, constructs from the aspects of framework structure, platform function, and technical route. The platform could realize intelligent dynamic tracking and management of the entire process of equipment entering, storing, using, maintaining, and exiting the depots, which can greatly improve the level of informatization of equipment depots, the management efficiency of ship oil spill emergency equipment depots, the accuracy and speed of equipment operations and emergency response capabilities.

Analysis, treatment and countermeasures on oil spills at sea

In recent years, the related oil spill accidents have occurred from time to time because of various reasons (human caused such as negligence or collision, sinking, pipeline rupture, and so on.), which has given rise to lots of impacts on the economy, water environment, and human health. In order to solve this problem, it’s necessary for us to reduce and control the impact caused by oil spill accidents by means of the characteristics of different ship oil spill pollution incidents, considering what to use, and how to take advantage of actual and effective methods and try to adopt these methods to derive out accident management solutions with feasible aspects in technology and economy and making the impact on economy and ecology, etc caused by oil spill accidents minimize. In this article, it introduces the situation oil spill accidents at sea first, and then analyzes the impact of oil spill accidents at sea, in the end; it put forward countermeasures and suggestions.

The application of ship oil spill risk prediction in Dongying emergency capacity planning

This study combines the hydrodynamic prediction model MIKE21 and the oil spill model OILMAP. Using the hydrodynamic prediction model to provide the accurate tidal current field for oil spill model, we apply oil particle tracing method and stochastic simulation method to predict and evaluate the risk of oil spill in the planned port area. The numerical simulation results show that the current and the wind will directly affect the range and trajectory of the oil film. Once the oil spill accident happens, the area with probability greater than 70% is about 191.5km2, which is mainly affected by 5km within two sides of port. Through risk prediction and assessment, we can provide necessary support for the regional emergency forces.

Risk Assessment of Ship Oil Spills in the Ningbo-Zhoushan Port

The accidents of ship oil spill have been one of the most significant factors leading to marine pollution, so appropriate approaches to forecast ship oil spill risk has important significance. Risk assessment of ship oil spills is a complex multi-factor issue, which plays a key role of ship oil-spill emergency response. A novel fuzzy evaluation model for risk assessment of ship oil spill is presented by analyzing historic accident data and expert experience. The model is used to compute comprehensive accident probability of ship oil spill and analyze sensitivity of risk factors so as to evaluate ship oil spill risks quantitatively and find out major risk factors which influedce ship oil spill risk. At last, the presented model is applied to study the ship oil spill risk in Ningbo-zhoushan port, the assessment examples are proved to test the feasibility and reliability of the model.

Characteristics of Ship Oil Spill Incidents in Zhejiang Coastal Area

This paper reviewed oil spill incidents in Zhejiang coastal waters and characteristics of these incidents were analysed from geographical and seasonal distributions. Both operational and accidental oil spill incidents were examined, and key factors on ship accidents were identified. It was found that traffic density may be an important contributor to the oil spill incidents as key majority of accidents happened in busy waterways of important ports, especially Ningbo-Zhoushan area. The most significant oil spill risks were associated with navigational hazards of collision and grounding. The findings could be very useful for developing oil spill risk control and pollutants recovery measures.

Numerical Simulation of Ship Oil Spill under Ocean Environment

To clean the spilled oil from wreck ships and protect the marine ecological balance and prevent the damage to marine environment, the simulation of oil spill in deep water with the wave motion, wind and current was built in FLUENT platform. The dispersion and diffusion of oil spill in deep water was simulated dynamically. Also the oil spilling trajectories under the conditions of different current velocities, wavelengths and wind velocities were compared and analyzed, respectively. The results showed that the current, wind and wave decided the location and areas of oil films on the sea surface. The water depth influenced by the wave which increased with the increasing wavelength. Meantime, the areas of oil films on sea surface increased with current velocity decreasing, while the distance between the oil film and the source of oil increased. With the wind velocity increasing, the extended length of oil dispersion underwater and the oil film area on surface increased.

The Study of Risk Assessment on the Ship Oil Spill Diffuseness

Ship oil spill is one of the most serious marine pollutions. By assessing the risk of oil spill’s diffuseness, revealing the complex rules of its occurrence and taking appropriate preventive and emergency measures, we can minimize the pollution. With Yangshan’s waters in Shanghai as the background, this paper, using hierarchic analysis, gives a model of risk assessment on the oil spill’s diffuseness in Yangshan and a risk assessment on the oil spill’s diffuseness on the real ship, providing a scientific basis to effectively avoid pollution caused by oil spill diffuseness.