Maintains pressure in oil-filled and gas-filled cables used to transmit high-voltage electricity: Computes amount of oil or gas required for given section of cable, using standard specifications.
Pumps oil or gas into cable until specified pressure is attained. Installs relay (regulating devices) used to control pressure inside cables. Attaches temporary reservoirs to ends of cable to maintain pressure during installation of cable. Tests cables with manual pressure gauges. Reports cable sheath defects and joint failure for repair.
