These works at the British Airways Maintenance Base comprised the replacement of hydrants and valves, including all the associated civil engineering works. The initial phase saw RK Air replace 18nr firemain hydrants and 9nr isolation valves on existing 16-inch and 24-inch trunk mains. The works were undertaken at nine separate locations which required close liaison [...]
A project to provide a northern boiler temporary connection to HTHW system within the services tunnel adjacent to Heathrow Terminal 3. The RK Air works included freezing the existing pipe network using liquid nitrogen, cutting into the existing ductile iron pipes, welding new pipework and fittings, and transferring the new pipework system from the services [...]
RK Air's works included the supply and installation of 1200m of new 250mm ductile iron firemain within the ILS critical area at Gatwick Airport. Works undertaken included all the associated civil engineering, including excavating the trench for the firemain which was traversed by 118nr existing services, installing pipework and valves, constructing valve and hydrant chambers [...]