This column is a central unit in the Alkylation unit with an approximate
height of 42m and requiring scaffolding build with 22 lift made of
approximately 70 tonnes.
• The scaffold build requires total encapsulation for a full external grit blast
and paint. In addition to this access is required for internal inspections
and the removal and replacement of the top head.
• There have been approximately 1200 man-hours utilised on achieving
• The alkylation unit is a part of the refining process that requires
potent acids to complete its function. This safety factor, combined
with the particularly compact characteristics of the unit, posed several
challenges for the scaffold crew. Despite this the crew has managed to
successfully move several tonnes of scaffold in and out of the unit to
complete some impressive builds