The project scope of works was to install a new section of a water main underneath a railway line. To ensure continued supply of water while the existing main line was replaced, a temporary 250mm PE bypass to the existing main was required. Using Plasson Large Bore Saddle and hot tapping tool, the hot tap was performed by safely cutting into the existing 500mm PN16 PE pipe that was in use and under pressure. The newly installed pipe system is fully functional and will be reliable for the future.