COUPLED LATERAL-TORSIONAL RESPONSE OF EQUIPMENT MOUNTED IN CANDU NUCLEAR POWER PLANTS.

The seismic environment of a piece of equipment located in a nuclear power plant is significantly affected by the analytical model which is used to represent the physical reactor structure. In this paper, a coupled lateral torsional model (CLTM) is developed as a modification of the uncoupled lateral torsional model (ULTM) by including the torsional degree of freedom for each mass point and taking into consideration the effect of eccentricities …