Organizing committee of International symposium “Tools and Methods of Competitive Engineering – TMCE’2012” accepted paper of Prof Alexander SHARMAZANASHVILI for publication and podium presentation on symposium in Karlsruhe, Germany on 9th of May, 2012. Paper “Modelling Aspects of Hyper-Complex products in Nuclear Engineering Projects” has been passed anonymous estimation by independent peer reviewers, internationally recognized experts. Paper describes methodologies and approaches for creation of entire geometry model of ATLAS detector, experimental facility of Large Hadron Collider project, CERN, Geneva, Switzerland. Work summarise all activities done by GCCEC for the ATLAS Technical Coordination Team starting from 2004.