![]() ![]() To reduce the demurrage costs, the inventory levels of the raw materials must be kept as low as possible. A critical problem currently facing the industry is the limited capacity of the yards, which leads to high demurrage costs while ships wait for space to open up in the yards before they can unload. ![]() Once these raw materials arrive in Japan, they are transported to domestic mills and stored in yards before being treated in a blast furnace. The Nippon Steel Corporation imports more than 100 million tons of raw material annually by vessels from Australia, Brazil, Canada, and other countries. ![]() We developed a seasonal inventory management model for raw materials, such as iron ore and coal, for multiple suppliers and multiple mills. ![]()
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