Clock Spring - World Leader In Pipeline Repair Solutions

The following procedure provides the generic approach to reinforcing dented pipe sections. Reinforcing dented pipe reduces cyclical loading that can lead to time dependent failure. Fatigue testing indicates that the Clock Spring® repair system extends the fatigue life for dressed mechanical defects by an order of magnitude over grinding as the sole repair. (GRI Report No. GRI-97-0413 “Evaluation of a Composite  System  For  Repair  of  Mechanical  Damage  in  Gas  Transmission Lines”). The repair is limited to smooth dents caused by inadvertent pipe contact with machinery or objects in the ditch or backfill. Stress concentrators in the dent must  be  removed  in  accordance  with  applicable  codes  and  the  dent  area inspected for surface cracking. Contact the Clock Spring Company, L.P. or a designated representative for more information.

 See also: Effectiveness of Dent Repair Using Clock Spring