Product Price :Get Latest PriceHydraulic jacks for lifting and erecting welded as well as bolted storage tanks are manufactured and exported by Bygging since the last 33 years. Bygging's jacks have been used at installations for Shell, BP, Vopak, Oiltanking, Exxon Mobil, Chevron, Pertamina, KOC, KNPC, Aramco, VTTI.
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These jacks come with a “lifting hook” instead of the lifting arm. The hook holds and lifts the tank shell from the bottom edge of the plate. Welding of lifting lugs and fend-off lugs is eliminated and so is the need to test and repair tank shell plates after removing the lugs.
Procedure for fixing next shell course and removal of hooks is explained below :
The tank is lowered down using jacks, to sit on newly erected shell ring leaving root gap as required. To do this, the jacks are lowered down by about 70 mm. At this time the lifting hooks will not lower down along with jacks, since their downward movement is obstructed by the new shell ring. Now one by one, using a crow bar, the shell plate (which is held by the lifting hook) is wedged towards the front (towards inside of the tank) so as to free the lifting hook and allowing the hook to drop onto the jack.
Tanks with shell plates upto 30 mm thick can be erected using this type of equipment.
Jacking equipment with lifting hook is denoted by the “H” in the Model code.
Product Price :Get Latest PriceBuying Jacking equipment is used in the following cases of tank repair :
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