Apparatus for pipeline inspection

摘要

A sensor arm (102) has an injection moulded body. One end of the arm (102) is used to mount the arm on a pipeline inspection tool (104). The other end (114) of the arm is spring biased into contact with the internal surface of a pipe wall. The arm (102) is an injection moulded component, e.g. made from Nylon 12. The arm (102) has lightweight and dynamically improved configuration, which reduces the impact of weld bead strikes. The arm (102) includes a recess (130) configured to reduce the likelihood of impact from the biasing spring (108).