DES DES The negative result or effect of an event. There may be a range of possible impacts associated with an event. (only negative effects are considered here) LEG LEG ENV ENV ENV ENV OPER OPER FIN FIN A measurable characteristic, element or variable that can cause a risk to occur. FIN FIN A constituent of risk, which is identifiable upon risk occurrence and its presence denotes the occurrence of the risk. 1 1 TECH TECH OPER OPER LEG LEG CON CON The sequence of the driving forces that result to the occurrence of a risk. Risk occurrence is the result of relations of events, processes conditions and system reactions that all together constitute a risk occurrence mechanism. DES DES TECH TECH CON CON The magnitude and importance of a risk Probability of occurrence of a risk (quantitative terms) The negative result or effect of an event presented in quantitative terms. There may be a range of possible impacts associated with an event. (only negative effects are considered here) DES ENV FIN LEG TECH OPER CON true true true Dynamic and repeated (cycling) loading due to winds and waves may lead to the development of microcracks of defects that cause localized stress concentrations. These microcracks may grow or propagate without any appreciable deformation of the structure. Consequently, gradual loss of the resistance of the support structure and/or the tower and/or the RNA occurs combined with the existence of cumulative damages on the various parts of the OWT (Fatigue mechanism). Mechanism of TECH.1.1 excessive or premature cracking TECH replacement cost of TECH.1.1 replacement cost of the tower and the RNA and/or of the whole OWT Risk of replacement cost due to normal wind and wave conditions in power production situations IRISOW 1.0 2010-04-01 1 fracture Risk of injuries due to normal wind and wave conditions in power production situations TECH.1.1.d normal wind and wave conditions Combination of normal (return period of 1 year) wind and wave loads in power operation situation injuries of TECH.1.1 injuries or loss of human life Risk of failure due to normal wind and wave conditions in power production situations TECH Permanent inelastic deformations loss of revenue of TECH.1.1 loss of revenue (power production loss) TECH.1.1.c TECH Risk of failure due to normal wind and wave conditions in power production situations Risk of loss of revenue due to normal wind and wave conditions in power production situations Risk of failure due to normal wind and wave conditions in power production situations TECH.1.1.b Risk of failure due to normal wind and wave conditions in power production situations TECH.1.1 TECH TECH Risk of failure due to normal wind and wave conditions in power production situations TECH.1.1.a Risk of Repair/maintenance cost due to normal wind and wave conditions in power production situations Repair/maintenance cost of the support structure and/or of the tower and/or of RNA Repair/maintenance cost of TECH.1.1