① TBM and ready to work → Around the scene clean-up→ Check the task after a ball tool② TR C/T plumbing→ Piping cutting: wear a safety reserve (Gloves, safety goggles, wear a mask)
① TBM and job preparationthe → in thingsthe maintenance work after the →② tr c / t pipe→ pipe cutting are such security.(gloves, goggles, mask wearing)