Page - 745 - in Book of Full Papers - Symposium Hydro Engineering

7. REFERENCES This article is based on a study documented in a report by EnergiNorge in Norwegian. When this article was written, the report was not published. The report will in time available on: https://www.energinorge.no/publikasjoner/ SUMMARY The study presented in this paper is part of a lager Norwegian Research and Development project, named “Dam safety in an overall perspective” that is administrated by EnergiNorge. This is a joint project with participants from the Norwegian dam safety sector. One of the objects of this project is to look at alternative approaches to evaluate safety of existing concrete- and masonry dams. This paper presents a study carried out to identify how different variables affect the estimated safety for dams. To do so, a series of calculations has been carried out to understand how the FoS is affected for a wide range of variables and assumptions. The calculations have been carried out by combining a computing tool for stability calculations with a script that runs the calculations. This method has proved to produce a very powerful and flexible tool for computing stability with varying assumptions. In total, the report is based on approximately 7000 separate calculations with different variables The study gives suggestions on how uncertainties related to loads and other assumptions can be represented in the overall FoS. The results can also be used to justify the current practice and safety level applied by the Norwegian dam safety regulations. 745