Method and apparatus for stress mapping of pipelines and other tubulars

A stress mapping system operable to determine and map stresses along a conduit, said stress mapping system comprising:

• a tool movable along a conduit and having at least one sensing device for sensing characteristics of the conduit;
• wherein said tool includes a position determining device operable to determine the position of said tool as said tool moves along the conduit;
• a processor operable to process an output of said at least one sensing device;
• wherein, responsive to processing of the output by said processor, said processor is operable to determine stresses at a surface of the conduit;
• wherein, responsive to said processing of said output of said at least one sensing device, and responsive to determination of the position of said tool along said conduit, said system generates a map of determined stresses along the conduit;
• and
• wherein the map of determined stresses provides a visual representation of the stresses determined at and along the surface of the conduit.