PREPARATION AND EXECUTION OF THE GIS FIRST OVERHAUL FOR QINSHAN NPP PHASE ONE

摘要

This paper addresses the necessity and feasibility of the first major overhaul on the GIS based on the analysis of the special conditions and the issues we confronted ; After the comparison of various schemes, the optimized scheme is put forward; the paper also expounds the proper preparation and cautious practice which led to the hard but final accomplishment of the initial overhaul on the GIS; this article further explains the necessity of the major overhaul on the GIS through the disposal of abnormalities during the execution of this major overhaul.