Probabilistic Failure Analysis of Steel Structures Exposed to Fatigue

Abstract

The paper is focuses on one of probabilistic methods which can be used for failure analysis and reliability assessment of steel structures which are subject to cyclic loads and exposed to fatigue. A particular attention is paid to creation and propagation of fatigue cracks from edges and surface. On the basis of the reliability assessment, a system of inspections is proposed for structural details which tend to be sensitive to fatigue damage. A new probabilistic method which is still under development - Direct Optimized Probabilistic Calculation (DOProC) was used for this probabilistic task. This method is the basis of the FCProbCalc code.

Probability and Sensitivity Nonlinear Analysis of the Hermetic Cover of Main Shut-off Valve under Extreme Pressure and Temperature

“…The nonlinear probabilistic analysis of MSV steel covering failure is in accordance with the IAEA requirements [7] and NRC [21,22], experiences from the similar analysis NPP in abroad [20], new knowledges from the probabilistic analysis of structures [2,5,8,9]. Sensitivity analysis of steel plane frames with initial imperfections [9] and our experiences from the previous analysis [12][13][14][15][16][17][18].…”

Probabilistic Nonlinear Analysis of the NPP Hermetic Cover Failure due to Extreme Pressure and Temperature

“…The nonlinear probabilistic analysis of the reactor cover failure is in accordance with the requirements IAEA [7] and NRC [18 and 19], experiences from the similar analysis NPP in abroad [12 and 22], new knowledges from the probabilistic analysis of structures [2-6, [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] and our experiences from the previous analysis [12][13][14][15].…”

Nonlinear Analysis of the Hermetic Postament Safety During Technology Accident in the Nuclear Power Plant

“…The methodology of these analyses is based on requirements IAEA [6] and NEA [1,19], experiences from the similar analysis NPP in abroad [3, [11][12][13], new finding from the nonlinear analysis of structures [8,[10][11][12][13][14][15][16]19], the methodology of the reliability analysis in case of the extreme loads [2,4,5,7,9,10,12,14,15,17,18,20,21] and our experiences from the previous analysis [10][11][12][13]. This contribution is based on methodology of the deterministic nonlinear analysis of the NPP technology segment collapse during the hard accident in the hermetic zone [10].…”