Abstract: An in situ launch system for an underground gas main stop-off station includes: an outer launch tube having a distal lower end and a proximal upper end; a transition fitting having a proximal end fitted to the distal end of the outer launch tube with a gas tight seal, and a distal end; the distal end of the transition fitting having external threads having a first nominal dimension, and internal threads having a second nominal dimension; and a completion plug threaded into the internal threads of the transition fitting.

Abstract: An in situ launch system for an underground gas main stop-off station includes: an outer launch tube having a distal lower end and a proximal upper end; a transition fitting having a proximal end fitted to the distal end of the outer launch tube with a gas tight seal, and a distal end; the distal end of the transition fitting having external threads having a first nominal dimension, and internal threads having a second nominal dimension; and a completion plug threaded into the internal threads of the transition fitting.

Abstract: A method for managing corrosion of an underground structure includes placing an anode in the ground and electrically connecting it to the underground structure. Access to the ground is obtained through a container at least partially buried in the ground, such that the surface of the ground proximate the container does not need to be penetrated in order to position the anode. A hole is bored through a wall of the container to access the ground proximate the container. Material is removed from the ground to provide a location for the anode. The anode is placed in the ground and backfilled with an electrically conductive backfill. A wire leading from the anode is then terminated inside the container at an electrical connection with another electrical conductor connected to the underground structure. The lid is replaced on the container, and the entire process is performed without penetrating the surface of the ground proximate the container.