Patent ID: 7551197

Claim:
An inspection system for inspecting a pressurized gas pipeline, the inspection system comprising: an elongate flexible guide member; a first conduit having first and second ends, the first conduit being configured for sealed insertion into the pipeline such that the first end is outside the pipeline, the second end is inside the pipeline, and escape of gas from inside the pipeline is inhibited as the second end is inserted into the pipeline, the first conduit being further configured to receive the guide member therein, thereby facilitating entry of the guide member into the pipeline; a second conduit configured for sealed attachment to the pipeline at an opening in the pipeline, and further configured to receive the first conduit therein, thereby facilitating entry of the first conduit into the pipeline through the opening; a first seal cooperating with the first conduit and the guide member to inhibit gas from the pipeline from escaping through an inside of the first conduit; a second seal cooperating with the first and second conduits for effecting the sealed insertion of the first conduit into the pipeline; a transition member adjacent the second end of the first conduit for facilitating a change in direction of the guide member as the guide member enters the pipeline from within the first conduit; and a camera attached to the guide member and configured to pass through the first conduit and into the pipeline.