Business interruption and disruption to supply chains are among the main concerns organizations will face in 2015, according to the new Risk Barometer report from Allianz.In a worldwide survey of more than 500 risk managers and insurance experts within Allianz and other global businesses, supply chain risk was ranked as a top concern by 46% of respondents. Natural catastrophes (30%) and fire and explosion (27%) were also ranked as top risks. Natural catastrophes, such as earthquakes, proved to be a major concern for the engineering and construction sector.