Hydraulic Tank Jacks Model AIEIPL-HTJE-12MT-DA-A-J-RT (“J” = J-Hooks)
These hydraulic tank jacks come with “Tank lifting J-hooks” instead of a lifting arm. The J-hooks hold and lift the tank shell plate from the bottom edge of the shell plate. Welding of lifting lugs and fend-off lugs is eliminated and there is no need to test and repair of tank shell plates after removing the lugs.
Hydraulic Jacking equipment with lifting J-hooks is denoted by the “J” in Model No. The procedure for fixing the next shell course and removal of J- hooks is explained below:
The tank is lowered down using hydraulic jacks and rests on the newly erected tank shell plate ring keeping a root gap as per WPS. To do this, the hydraulic jacks are lowered down by around 60 mm, and extra heavy support is fixed to connect the tank with the new shell ring. Released hydraulic jack from shell course, J- the hooks are locked with shell plate, pull the J-hooks down side by pulling machine or chain block.