Hyundai E&C will build Han River Underground Tunnel with a 14 meter diameter TBM. It is largest in Korea. It is brand is Herrenknecht.

This TBM has specifications which are first in Korea: Such as atmospheric cutter replacement system, disc cutter monitoring system, scraper and cutterhead wear detection sensor, forward exploration system,total observation camera.

https://www.dnews.co.kr/uhtml/view.jsp?idxno=202209021011437140055