Contractors World UK & Ireland Vol 3 No 6 - page 25

gives us a clear indication of the dimensions
and weights we are dealing with – up to 116
tonnes. The biggest challenge is the logistics
of actually moving people and machinery
around such a restricted space.
“To a large extent we have to work
inwards from the periphery, removing
components as we go. As we progress
through, the craneage will then have the
access needed to extract some of the more
intricate equipment clear and intact on their
steelwork skids.
“Smaller vessels and pipework are being
tightly packed into seafaring containers,
while larger components such as a range of
42 tonne PSA (pressure swing adsorption)
vessels are being lifted by crane and loaded
onto heavy haulage vehicles.
“Due to the design of the tank-like PSA
vessels, it was necessary to manufacture
a bespoke attachment to aid the lifting
process.
Once this shackle is connected to the top
lifting point of the tank, the seal to the floor
is cracked and a 450 tonne crawler crane
lifts each tank clear in a vertical position.
“The hook of a smaller 160 tonne crawler
crane is then attached to the tailing lifting
point at the base of the vessels, to enable
the tank to be lifted into a horizontal posi-
tion for transportation.”
The LCA plants were cleaned and decon-
taminated as part of the preceding site
wide decommissioning project. However
preparing them for reuse demanded a
secondary cleanliness review and the appli-
cation of a protective coating to preserve
the equipment throughout the journey,
and ensure it met the end user’s import
regulations.
For the heavy lifts, a 450 T Kobelco
SL450 was the main lift crane with a 160 T
crane Liebherr LR1160 acting as the tailing
crane. These were hired from Weldex.
A Demag 55Te AT mobile crane was
also deployed along with four telehandlers,
five mobile elevating work platforms and a
35 tonne tracked excavator.
Page 25
Contractors World - UK & Ireland Vol 3 No 6
Due to the design of the tank-like PSA vessels,
it was necessary to manufacture a bespoke
attachment to aid the lifting process.
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