In the construction and aftersales service (A/S) of nuclear facilities, construction technology that fulfills various design requirements is required to bring the nuclear facility into operation safely within a short construction period. Furthermore, rationalization through an increase in operating efficiency and labor saving, in addition to an increase in safety and quality, is also required. To respond to these needs, our division investigated problems in various types of construction work, collected information about state-of-the-art ICT technologies and worked on their introduction into actual construction work. This report describes our approach to the advancement of construction technology and application examples.