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The Methodology of Safety Design Based on Risk Assessments for Ships and Shipbuilding

In our functional systems engineering laboratory, research objectives that are related to the research theme of the methodology of safety design based on risk assessments for ships and shipbuilding can be described in terms of the three key areas of improved safety in maritime affairs, preservation of the environment, and value improvements such as reduction of environmental burdens in physical distribution. These are summarized as follows: 1) Development of equipment for ballast water treatment for reduction of marine environmental risk, 2) Risk assessment for occupational safety improvement in shipyards, 3) Risk assessment for collisions between fishing vessels and cargo ships, 4) Preservation of the marine environment and evaluation of environmental values, 5) Functional design of container terminals and functional assessment of container handling with a reduction in environmental burdens.

Two main research topics are introduced below:

1) The development of equipment for ballast water treatment

fig

Filtration treatment
equipment for ballast water
management

The International Convention for the Control and Management of Ship Ballast Water and Sediments was adopted by the IMO (International Maritime Organization) in London in 2004. All discharge of ship ballast water and sediments will be covered by IMO regulations by 2017. The trend in major treatment equipment is for chemical treatment, but there is concern that chemically treated ballast water will damage the marine environment. In response to these new obligations, treatment equipment under development in our research laboratories uses new effective filtration technologies, and the treated water satisfies the IMO requirements for ballast water and sediments.

2) Risk assessment for occupational safety improvement in shipyards

fig

Mock-up experiment

In the production or operation stages of large-scale structures such as ships and marine structures, it is important to consider safety management. Preliminary design risk assessment at the start of a project is of growing importance in the design stage of ships, marine structures and systems. To this end, we are developing risk analysis methods and are applying them to known safety issues. The photographs below show an example of an application in occupational safety management, and the analytical method of predicting human motion that has been developed using chaos theory in the field of complex systems science and the modeling of human body motion.

Functional Design of Marine Systems Lab.,
Department of Marine Systems Engineering, Faculty of Engineering, Kyushu University
Professor Takeshi Shinoda
Associate Professor Takashi Tanaka
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