Limits...
A synthetic method for atmospheric diffusion simulation and environmental impact assessment of accidental pollution in the chemical industry in a WEBGIS context.

Ni H, Rui Y, Wang J, Cheng L - Int J Environ Res Public Health (2014)

Bottom Line: The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved.The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform.The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210093, China. haochenni.nju@gmail.com.

ABSTRACT
The chemical industry poses a potential security risk to factory personnel and neighboring residents. In order to mitigate prospective damage, a synthetic method must be developed for an emergency response. With the development of environmental numeric simulation models, model integration methods, and modern information technology, many Decision Support Systems (DSSs) have been established. However, existing systems still have limitations, in terms of synthetic simulation and network interoperation. In order to resolve these limitations, the matured simulation model for chemical accidents was integrated into the WEB Geographic Information System (WEBGIS) platform. The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved. This allowed comprehensive and real-time simulation of acute accidents in the chemical industry. The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform. The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

Show MeSH

Related in: MedlinePlus

Simulation results of the explosion and conflagration. Images (a), (b), and (c) respectively present the overpressure, thermal radiation, and conflagration temperature. In (a), the overpressure of the upper left part represents the CS2 storage, and the lower part denotes H2S. In (b), the thermal radiation of the explosive shows that the combustion heart of CS2 is too low, thus, only the H2S thermal radiation is observed. In (c), the temperature of the CH3OH conflagration reaches 150 °C.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4199017&req=5

ijerph-11-09238-f007: Simulation results of the explosion and conflagration. Images (a), (b), and (c) respectively present the overpressure, thermal radiation, and conflagration temperature. In (a), the overpressure of the upper left part represents the CS2 storage, and the lower part denotes H2S. In (b), the thermal radiation of the explosive shows that the combustion heart of CS2 is too low, thus, only the H2S thermal radiation is observed. In (c), the temperature of the CH3OH conflagration reaches 150 °C.

Mentions: Explosions and conflagration are usually secondary accidents after leakage. Explosions often happen at the pressure vessel, and conflagration is caused by combustible substances igniting. Two pressure vessels stored liquid H2S and CS2 were chosen to simulate the influence of an explosion. A CH3OH leakage fire was used to estimate the conflagration effect (Figure 7).


A synthetic method for atmospheric diffusion simulation and environmental impact assessment of accidental pollution in the chemical industry in a WEBGIS context.

Ni H, Rui Y, Wang J, Cheng L - Int J Environ Res Public Health (2014)

Simulation results of the explosion and conflagration. Images (a), (b), and (c) respectively present the overpressure, thermal radiation, and conflagration temperature. In (a), the overpressure of the upper left part represents the CS2 storage, and the lower part denotes H2S. In (b), the thermal radiation of the explosive shows that the combustion heart of CS2 is too low, thus, only the H2S thermal radiation is observed. In (c), the temperature of the CH3OH conflagration reaches 150 °C.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4199017&req=5

ijerph-11-09238-f007: Simulation results of the explosion and conflagration. Images (a), (b), and (c) respectively present the overpressure, thermal radiation, and conflagration temperature. In (a), the overpressure of the upper left part represents the CS2 storage, and the lower part denotes H2S. In (b), the thermal radiation of the explosive shows that the combustion heart of CS2 is too low, thus, only the H2S thermal radiation is observed. In (c), the temperature of the CH3OH conflagration reaches 150 °C.
Mentions: Explosions and conflagration are usually secondary accidents after leakage. Explosions often happen at the pressure vessel, and conflagration is caused by combustible substances igniting. Two pressure vessels stored liquid H2S and CS2 were chosen to simulate the influence of an explosion. A CH3OH leakage fire was used to estimate the conflagration effect (Figure 7).

Bottom Line: The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved.The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform.The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210093, China. haochenni.nju@gmail.com.

ABSTRACT
The chemical industry poses a potential security risk to factory personnel and neighboring residents. In order to mitigate prospective damage, a synthetic method must be developed for an emergency response. With the development of environmental numeric simulation models, model integration methods, and modern information technology, many Decision Support Systems (DSSs) have been established. However, existing systems still have limitations, in terms of synthetic simulation and network interoperation. In order to resolve these limitations, the matured simulation model for chemical accidents was integrated into the WEB Geographic Information System (WEBGIS) platform. The complete workflow of the emergency response, including raw data (meteorology information, and accident information) management, numeric simulation of different kinds of accidents, environmental impact assessments, and representation of the simulation results were achieved. This allowed comprehensive and real-time simulation of acute accidents in the chemical industry. The main contribution of this paper is that an organizational mechanism of the model set, based on the accident type and pollutant substance; a scheduling mechanism for the parallel processing of multi-accident-type, multi-accident-substance, and multi-simulation-model; and finally a presentation method for scalar and vector data on the web browser on the integration of a WEB Geographic Information System (WEBGIS) platform. The outcomes demonstrated that this method could provide effective support for deciding emergency responses of acute chemical accidents.

Show MeSH
Related in: MedlinePlus