Experimental and Analytical Seismic Study on 600 We CANDU Core

Abstract

Following the completion of STEP I and II tests, a third and final test (STEP III) of the CANDU core seismic verification program was conducted by EPDC together with a supportive analytical study. The test provided further assurance of shut-off rod insertion capability in addition to information on collision behavior between guide tube and fuel channel assembly. Furthermore it was shown that the seismic response of the CANDU core including collision behavior can be predicted with an acceptable degree of confidence by analytical means.

The findings obtained from this comprehensive program led to the conclusion that the CANDU core can maintain its safety function as well as its structural integrity under extremely strong earthquake motion excitation condition.