Optimal Design of NPP Containment Protection Against Fuel Container Drop

Abstract

This paper presents a optimal design of a damping devices for the protection of the reinforced concrete structure of a nuclear power plant (NPP) against the impact loads from a container of nuclear fuel of the type TK C30 drop. The finite element idealization of the building structure is used in space. The interaction of the soil-structure, as well as the fluid-structure of the deactivated basin is considered in space. A steel pipe damper system is proposed for the dissipation of the kinetic energy of the container is free fall. The Newmark’s integration method is used for the solution of the dynamic equations.

Experimental measurements of subsoil–structure interaction and 3D numerical models

“…Inadequate theoretical basics and an absence of appropriate calculation software also prevent the determination of an unambiguous solution of subsoil-structure interaction. Numerical modelling of the subsoil-structure interaction is also described in (Frydrysek et al, 2013;Janda et al, 2013;Kralik, 2013). …”

Concrete Targets with Heterogeneities under Impact Loading

“…(6) states that the value of a function at particle i is approximated using the average of those values of the function at all the particles in the support domain of particle i weighted by the smoothing function shown in Fig. 1.…”

“…Concrete, as the mixture of a concrete additive (or aggregate for short), a cement binder, and water, does not constitute a regular structure from any perspective or at any scale; with respect to this fact, not even the behaviour of the given structures can be assumed to remain identical in all cases. The introduced randomness is further multiplied by the type of load, which is invariably comprised in structural mechanics analyses [4][5][6].…”

Composite laminate under influence of temperature and moisture

“…The symmetric laminate has any coupling effect between normal forces and bending moments (Tabs. 4,5), opposite the unsymmetric laminate with coupling effect (Tabs. 6, 7) [7 -9].…”

“…The transverse modulus and in-plane shear modulus have considerable differences between undegraded and degraded values. For the optimization process [5,6], the symmetric and unsymmetric laminates with fiber volume fraction 0.6 was taken into account. In the example there was calculated the influence of fiber reinforced angle change on strength ratio or failure index (Figs.…”