This has been a challenging winter. In addition to the earthquakes and tsunamis in New Zealand and Japan, harsh winter storms throughout North America have been disruptive to the smooth flow of people, goods and services for many companies. Looking back over the past few years, hurricanes, volcanic eruptions and tornadoes have also made life difficult for supply chain professionals.
It may be several weeks or months before the full impact of the tsunami in Japan, from an economic or supply chain perspective, is understood. As the world’s third largest economy, the images of cars and houses being swept along by powerful waves signal that there is widespread damage. The closure of airports and ports could have significant consequences.
Of course, disruptions to supply chains can come from factors other than weather or natural disasters. Quality control problems, piracy and export restrictions are just some of the factors that can come into play. To make matters worse, most of these disruptions are unpredictable in timing and scope.
Each shipper has to make an assessment of the potential risks to their supply chains. According to Patthira Siriwan, senior project manager for supply chain development in North America for Damco, the combined logistics brand for A.P. Moller-Maersk, supply chain risks can be categorized into five groups: operational, social, natural, economy and political/legal. Damco defines supply chain risk management as “attempts to identify risks and quantify their commercial financial exposures as well as mitigate potential disruptions at each node and lane in the supply chain”.
Supply chain risk models can vary from the rudimentary to the sophisticated. In the case of the latter, complex “what if” analyses can be performed. This allows the shipper to identify potential trouble spots and map out alternative supply chain strategies. In a recent article in the Journal of Commerce, Siriwan indicated that shippers tend to focus on “factors with the biggest impact on their supply chain, such as on-time performance, supplier lead time variability and carriers by origin or trade lane”. Shippers need to perform some sort of probability analysis on the impacts of each potential disruption, with a particular focus on alternative vendors, carriers, origin points and ports and destination ports.
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