Operation limits for temporary riser system are determined according to some probability of exceedance of a relevant variable. Accordingly, consistent statistical analysis and probability modelling of the data is required. The common industry approach is to rely on the classical narrow-banded Gaussian process assumption when considering time series of variables of interest. Thus, the time series peaks are characterized by means of the Rayleigh distribution and the relevant extreme values are estimated based on this. However, non-linearities present in riser systems may yield non-Gaussian (wide-banded) processes, rendering the classical approach inappropriate. In the present work, an approximate and practical method is presented to address above issue. It is demonstrated that the approximate method is capable of consistently estimating the relevant extreme values, even where the classical method comes short.
Determination of Short Term Extreme Response Values for Temporary Riser Systems: A Practical Approach
- Views Icon Views
- Share Icon Share
- Search Site
Cetin, A, Pytte, T, & Eriksrud, S. "Determination of Short Term Extreme Response Values for Temporary Riser Systems: A Practical Approach." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Pipelines, Risers, and Subsea Systems. Busan, South Korea. June 19–24, 2016. V005T04A054. ASME. https://doi.org/10.1115/OMAE2016-54763
Download citation file: