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|Title:||Sensitivity analysis for reliable design verification of nuclear turbosets|
|Authors:||ZENTNER Irmela; TARANTOLA Stefano; DE ROCQUIGNY Etienne|
|Citation:||RELIABILITY ENGINEERING & SYSTEM SAFETY vol. 96 no. 3 p. 391-397|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in periodicals and books|
|Abstract:||In this paper we present an application of sensitivity analysis for design verification of nuclear turboset. Before the acquisition of a turbo generator, EDF performs independent design assessment in order to assure safe operating conditions of the new machine in its environment. Variables of interest are related to the vibration behaviour of the machine: its eigenfrequencies and dynamic sensitivity to unbalance. In the framework of design verification, epistemic uncertainties are preponderant. This lack of knowledge is due to inexistent or imprecise information about the design as well as to interaction of the rotating machinery with supporting and sub-structures. Sensitivity analysis allows to rank sources of uncertainty with respect to their importance and, possibly, to screen out insignificant sources of uncertainty. Further studies can then focus on predominant parameters. In particular, the constructor can be asked for detailed information only about the most significant parameters.|
|JRC Directorate:||Space, Security and Migration|
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