When the last core samples were taken from Crawford Lake this spring, Catherine Tammaro couldn’t bring herself to watch. The globe as a whole is now warmer than it’s been at almost any point since the end of the last ice age. The lake’s calcite layers became thicker during warm years pollen grains show how the forest composition shifted to include more heat-loving tree species.Īverage temperatures in southern Canada have increased about 1.5 degrees Celsius (2.7 degrees Fahrenheit) in this time. The amount of elm pollen plummeted - a consequence of the invasive fungus that was decimating North America’s tree populations at the time.Īll the while, greenhouse gas pollution made the planet inexorably hotter. Certain microbe species were eliminated locally. Still more sediments recorded irreversible losses. Acid rain, caused by pollution reacting with water in the atmosphere, diminished the calcite layers. The amount of fly ash increased eightfold in less than five years. A lighter form of nitrogen - a molecular signature of burning fossil fuels - proliferated. Other shifts weren’t necessarily new, but they appeared at scales ten or a hundred times greater than anything the lake had seen before. The element rarely occurs naturally on this planet it could only have come from nuclear weapon tests happening thousands of miles away. Please join us at the conference to discuss any questions that you may have.The sharpest sign of change was a surge in radioactive plutonium that started in Crawford Lake’s mud around 1950. will be presenting at the ACP OMS Conference on Mawith a specific focus on applying Root Cause Analysis methods to foundation performance. The Structural, Geotechnical and Civil Engineers in DNV's Civil Engineering section have the experience and tools developed over decades in the renewable energy industry and can recommend actions to fully understand and optimize performance of your foundations and structures.Īpostolos Athanasiou, Ph.D. These have been traditionally used to evaluate mechanical and electrical performance issues and are powerful tools to help understand the same aspects for foundations and structures. Different approaches to RCA include bowties, fault trees, BSCAT™, and others. To ensure a deeper understanding of concerns or issues with your foundations and structures, Root Cause Analysis (RCA) methods can be critical tools to provide these necessary insights. Often relatively modest changes to maintenance procedures and minor structural retrofits to supporting structures can result in better reliability and better overall energy production. This allows for appropriate measures to be taken to ensure the structure provides reliable support for continued operation.Įven in the absence of a potential failure, performance of a foundation and structural system can have a direct impact on energy production, and improvements in foundation performance can be gained with increased maintenance efforts as well as stiffening and reinforcing the foundation. Although this approach can solve the immediate problem, a holistic option is to look beyond the visible expression of a defect to understand how the structure is interacting with the asset. When a crack or other visible change to a foundation appears, a common approach is to address the superficial issue with a patch or another action that only addresses the symptoms. Media Newsroom Statistics and Insights Events Blogs: Energy in transitionįailures in renewable energy foundation systems are rare but can often be catastrophic when they do occur. Sector insights Maritime Power and renewables Oil and gasĭNV Group About us Corporate governance Research & development Joint Industry Projects DNV Ventures Sustainability Annual reportīusiness areas Maritime Energy Systems Business Assurance Supply Chain & Product Assurance Digital Solutions Veracity data platformĬareers Overview Job opportunities Career development Why DNV? Meet our people Diversity & inclusion ![]() Ship management, operations and ship design.Reliability, availability and maintainability (RAM).Electric grid performance and reliability. ![]() Offshore classification – fleet in service. ![]() Digital monitoring of medium-voltage cable networks.Digging deeper into foundation performance Power and renewables Sectors Services Insights About us Sign in Sign in to Veracity Open menu Open search
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