Interesting photos. Are you sure that damage is not happening during the pull caused by damaged pipe? It would be painful to pull it all again and have the same thing happen.Agreed. In fact, I'd say it would be virtually impossible to fix them without pulling them out of at least one side and starting over.
Coincidentally, we have to completely start over with at least four of the five runs: the installer damaged the insulation on many of those feeders. One whole conduit shorted out -- one set of (8) 500 MCM aluminum wires blew apart -- and three of the remaining four conduits contain one or more damaged conductors based on a megger test and visual inspection. Even the one "good" set may not actually be good because the section of conduit between the pull box and the MSG is dry, so the megger may not have registered a fault. We still need to perform a wet test on that section of conduit.
We've already removed the aluminum feeders that catastrophically failed (they were the ones marked with red tape in the earlier photo). All these feeders have been in service for 18 months. Here are some photos for your viewing pleasure. :roll: