| 摘要 |
The invention provides a clamp (12) for use on a flange, a method of clamping a flange and a method for removing bolts on a pipeline flange. The clamp (12) comprises a first jaw, a second jaw, a first displacement means (60) and a second displacement means (100). The first displacement means (60) and the second displacement means (100) are arranged to allow relative movement of the first and second jaws. The first displacement means (60) can be actuable to allow a greater proportion of relative movement of the first and second jaws than the second displacement means (100). The first displacement means (60) can be arranged to advance at least one of the first and second jaws so that the jaws are positioned adjacent a flange and the second displacement means (100) can be adapted to apply a measureable clamping force to the flange. |
