Maximum considered earthquake

Sms = the maximum considered earthquake (risk-targeted), 5 percent damped, spectral response acceleration parameter at short periods adjusted for site class effects... 

Smi = the maximum considered earthquake (risk-targeted), 5 percent damped, spectral response acceleration parameter at a period of 1 second adjusted for site class effects r = the fundamental period of the structure, seconds Ti = long-period transition period, seconds (see Figure 4-8)... 

Mapped Risk- Targeted Maximum Considered Earthquake Spectral (MCER) Parameter at Response Short Period Acceleration ... 

Although not explicitly stated, an additional performance objective in the design for ductility and energy dissipation is to prevent global collapse due to an extremely strong earthquake, like the Maximum Considered Earthquake (MCE)... 

Predict the Median or Mean of Structural Response for a given set of SJTj), M, and R. In this case, the scenario refers to a Maximum Considered Earthquake Sa(Ti) and not a MCE response spectrum. 

It is noteworthy to mention that strength analysis performed for the BN-800, a reactor in many ways similar to the MBRU-12 but having the mass and size that considerably exceed those considered for the MBRU-12, has confirmed plant seismic stability at a maximum design earthquake of 7 points per the MSK scale. 

Safety reassessment has shown, for certain French sites, an underestimation of the level of SMHV equivalent to the maximum historical earthquake recorded (or estimated from historical data) in the "seismotectonic province" of the site. Furthermore, two types of earthquakes are considered ... 

Part AD This part contains requirements for the design of vessels. The rules of Division 2 are based on the maximum-shear theoiy of failure for stress failure and yielding. Higher stresses are permitted when wind or earthquake loads are considered. Any rules for determining the need for fatigue analysis are given here. 

Considering the possible earthquake intensity, CEFR site is localed in the region of 7 degree, near 8 degree in standard 12 degree classification, the horizontal acceleration for safe operation SI will be 0.107 g on die base rock and for safe shutdown S2 will be 0.214 g. The analysed results to die both axial and peripheric stresses of the reactor vessel (main sodium tank) under these two circumstances that the maximum of peripheric stress at bottom supported is only half of that of top supported, and also we understand the bottom supported has been well realized in BN>600. These are the main reasons to make diis change. 

Expansion of diagonal cracks in MRM infill walls of 1st and 2nd floors was the main damage observed during D2-1 ground motion (Fig. 10.9). The IDR demands reached 0.32, 0.41, and 0.32 % at first, second and third stories, respectively, at the maximum top displacement of 14.5 mm. As the time span of D2 ground motion applications were all different (Fig. 10.7), the first 2.9 s of all D2 motions common in all tests were considered, in order to compare the maximum IDR demands of the test subjected to successive earthquakes. Fig. 10.9. 

Various safety related systems and safety support systems are designed to appropriate safety class specifications depending on the functional importance. In addition, systems are seismically designed for two different intensities of earthquake. The operating basis earthquake (ODE) represents the intensity of earthquake for which the systems are designed to remain functional during and after the event. The safe shutdown earthquake (SSE) considers the maximum earthquake potential of the site and only those systems which are required to ... 

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