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Full text of this paper is not available in the ETD Center. Copies may be available for inter-library loan from University of Cincinnati or may be available for purchase from Proquest/UMI

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COMPARISON OF TWO AERIAL DISPERSION MODELS FOR THE PREDICTION OF CHEMICAL RELEASE ASSOCIATED WITH MARITIME ACCIDENTS NEAR COASTAL AREAS

KEONG KOK, TEO

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2002, MS, University of Cincinnati, Medicine : Environmental Health Sciences.
Two computer models for predicting the aerial dispersion from chemical releases were compared. The U.S. Environmental Protection Agency’s (EPA) Aerial Location of Hazardous Atmospheres (ALOHA) model and the RITE Emergency Response Software model’s predictions were compared. A sector of Cincinnati, which most closely resembles the coastal, urban terrain of Singapore, was chosen to test the models. Two chemicals, chlorine and propane, were used to simulate accidental releases. Release data for a range of meteorological conditions were input to both models. The plume travel directions and maximum plume travel distances at Immediately Dangerous to Life and Health (IDLH) values from source, were predicted by the models. Results were compared by paired t-Test and Analysis of Variance methods. Analysis showed statistically significant difference ( p=0.001) between the predicted angles of the ALOHA and RITE models. The Analysis of Variance (ANOVA) for the RITE predicted angles showed that stability class will significantly affect the predicted angle for both chemicals. Chemical type, temperature and humidity were not significantly related to the RITE model’s predicted plume direction. Analysis also showed statistically significant difference ( p=0.001) between the ALOHA and RITE models in predicting maximum distances at IDLH values. The ANOVA for the RITE model predicted distances at IDLH values showed that both stability class and chemical type were statistically significant predictors of distances at IDLH values. Temperature and humidity were not significantly related to the RITE model’s predicted maximum plume distances.
Dr. Scott Clark (Advisor)
1 p.

Recommended Citations

Citations

  • KEONG KOK, T. (2002). COMPARISON OF TWO AERIAL DISPERSION MODELS FOR THE PREDICTION OF CHEMICAL RELEASE ASSOCIATED WITH MARITIME ACCIDENTS NEAR COASTAL AREAS [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1014648666

    APA Style (7th edition)

  • KEONG KOK, TEO. COMPARISON OF TWO AERIAL DISPERSION MODELS FOR THE PREDICTION OF CHEMICAL RELEASE ASSOCIATED WITH MARITIME ACCIDENTS NEAR COASTAL AREAS. 2002. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1014648666.

    MLA Style (8th edition)

  • KEONG KOK, TEO. "COMPARISON OF TWO AERIAL DISPERSION MODELS FOR THE PREDICTION OF CHEMICAL RELEASE ASSOCIATED WITH MARITIME ACCIDENTS NEAR COASTAL AREAS." Master's thesis, University of Cincinnati, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1014648666

    Chicago Manual of Style (17th edition)