In the companion paper (Ayyub et al., 2016, “Risk Assessment Methodology for Electric-Current Induced Drowning Accidents,” ASCE-ASME J. Risk Uncertainty Eng. Syst. Part B Mech. Eng., 3(3), pp. XXX-XXX.), the authors developed a methodology to identify hazards associated with electric-current-induced drowning and electric shocks for swimmers around docks, houseboats, and other boats in both freshwater and saltwater; and to assess scenarios and risks associated with these hazards. This paper presents numerical simulations of the electric field and potential in the surrounding water for a number of these electric-current-induced drowning accident scenarios in support of boating safety studies. A boundary-element-based computational tool was employed. A combined experimental and numerical validation study was first undertaken. The tool was then used to compute the electric field and potential in the fluid surrounding the boat with and without a person in the surrounding field for four accident scenarios, including two scenarios with boat at dock in freshwater or saltwater; and two scenarios with boat offshore in freshwater or saltwater. Parametric studies were also undertaken, giving consideration to parameters such as the location of the human with respect to the boat and dock; nature of the water body (freshwater or saltwater); and intensity of the applied current (i.e., at source); and to establish general trends of electric potential and electric field due to the presence of an electric power source in water. The observations from the parametric study are useful for developing information for communicating these risks to swimmers, first responders, boat owners and operators, marina and boatyard owners, and other persons in the vicinity of boats.
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September 2016
Research Papers
Simulation of Electric-Current-Induced Drowning Accident Scenarios for Boating Safety
Tamunoiyala S. Koko,
e-mail: tamunoiyala.koko@lr.org
Tamunoiyala S. Koko
1
Reliability and Risk, Lloyd’s Register Applied Technology Group
, 1888 Brunswick Street, Suite 400, Halifax, NS B3J 3J8
, Canada
e-mail: tamunoiyala.koko@lr.org
1Corresponding author.
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Bilal M. Ayyub,
Bilal M. Ayyub
Fellow ASME
e-mail: ba@umd.edu
Center for Technology and Systems Management, University of Maryland
, College Park, MD 20742
e-mail: ba@umd.edu
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Keith Gallant
e-mail: keith@emailopened.com
Keith Gallant
Independent Consultant
, 97 Williams Lake Road, Halifax, NS B3P1T4
, Canada
e-mail: keith@emailopened.com
Search for other works by this author on:
Tamunoiyala S. Koko
Reliability and Risk, Lloyd’s Register Applied Technology Group
, 1888 Brunswick Street, Suite 400, Halifax, NS B3J 3J8
, Canada
e-mail: tamunoiyala.koko@lr.org
Bilal M. Ayyub
Fellow ASME
e-mail: ba@umd.edu
Center for Technology and Systems Management, University of Maryland
, College Park, MD 20742
e-mail: ba@umd.edu
Keith Gallant
Independent Consultant
, 97 Williams Lake Road, Halifax, NS B3P1T4
, Canada
e-mail: keith@emailopened.com
1Corresponding author.
Manuscript received June 17, 2015; final manuscript received November 25, 2015; published online July 1, 2016. Assoc. Editor: Michael Beer.
ASME J. Risk Uncertainty Part B. Sep 2016, 2(3): 031003 (20 pages)
Published Online: July 1, 2016
Article history
Received:
June 17, 2015
Revision Received:
November 25, 2015
Accepted:
December 4, 2015
Citation
Koko, T. S., Ayyub, B. M., and Gallant, K. (July 1, 2016). "Simulation of Electric-Current-Induced Drowning Accident Scenarios for Boating Safety." ASME. ASME J. Risk Uncertainty Part B. September 2016; 2(3): 031003. https://doi.org/10.1115/1.4032262
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