[PDF] Top 20 Development of Evaluation Method for Seismic Isolation Systems of Nuclear Power Facilities - Fragility Evaluation of Base-Isolated Nuclear Power Plant Structures -

... a method of setting a limit state of seismically isolated NPPs buildings, and identified uncertainty factors in the seismic behaviour (or response) of the building by sensitivity ...the ... See full document

... of Evaluation Method for Seismic Isolation Systems of Nuclear Power Facilities, -Break Test of Full Scale Lead Rubber Bearings for Nuclear Facilities, ... See full document

... an evaluation method for seismic isolation systems of nuclear power ...a seismic level 1 probabilistic risk assessment (PRA) was performed for a nuclear ... See full document

... the seismic response and failure behaviour of crossover ...different seismic motions of isolated and non-isolated ...the seismic design method for crossover piping is ... See full document

... A seismic response analysis was made by the 1-degree-of-freedom (1-DOF) beam model with yield seismic intensity " and secondary frequency T2 as parameters, in order to make the specifications of the ... See full document

... Linear limit of shear strains were evaluated based on the results for the shear break test. Figure 8(a) shows the evaluation procedure following JEAG 4614-2013 (2013). The evaluation method is as ... See full document

... displacement relations. Figure 13 (a) shows all hysteresis curves (for 4 loops) of the horizontal basic property test of the full-scale seismic isolators as a sample. The third loop is shown in Figure 13 (b). The ... See full document

... buildings, fatigue failure will be critical for failure of the piping, not primary stress as in other components. Therefore, unlike the conventional method, the realistic capacity needs to be evaluated based on ... See full document

... After finishing the loading tests, observation of state or condition of test specimens was conducted by removing the seismic isolator from the pedestal. Conditions of top and side surface of pedestal in the most ... See full document

... the seismic evaluation of major industrial facilities in ...Korean nuclear power plant industry arbitrarily assumed most basic information and directly used the methodologies ... See full document

... The free field site response analyses were performed using one-dimensional site response analysis based on the equivalent linear stress-strain model for the soil sites. Two soil sites are selected, a clayey site and a ... See full document

... a nuclear power plant which is composed of a number of components is how to manage ...of nuclear power plant operators by constructing virtual learning ...mechanical ... See full document

... of nuclear power plant (NPP) safety-related ...safety-related structures are identified and their manifestations ...concrete structures to assess and quantify age-related degradation ... See full document

... Newmark method that is, the HHT-α method, is selected as a direct integration method because of its stability and ...containment structures for the seismic ... See full document

... “combined” method. This method is realized at two consecutive ...elements, structures or a construction as a ...of seismic structural analysis with the design and real characteristics of ... See full document

... of isolation unit, i.e., a bearing system, an isolation device or an isolator, have been developed based on various principles (Naeim and Kelly, 1999), and, in general, most bearing system types can be ... See full document

... estimation method, taking into account randomness of soil and building materials, the median and logarithmic standard deviation of concrete compressive strain, calculated values of rebar strain and average ... See full document

... As has already been mentioned, due to the high RLE it was necessary to extend the review of SSC to confirm seismic capacities of many components that were deemed OK from the walkdowns. The scaled vertical spectra ... See full document

... damage fragility evaluation is to perform simulation tracking the potential objects that could become missiles for different tornadoes and hurricanes passing through the ... See full document

... Generally speaking, response evaluation of roof truss is most important for reactor buildings under vertical earthquake motions. Thus, to propose a simple MDOF parallel vertical model for design, response values ... See full document