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ENGINEERING

Pict .03

the need for any additional equipment. During the
lifting a vessel, the tail frame is attached to the ves-
sel, which is aligned to the base frame and secured
onto the self-propelled modular transporter. The
tailing frame is also provided with a movable struc-
ture which is tied up to the item to be lifted. When
the crawler crane starts lifting the vessel, the SPMT
drives forward and the tailing frame movable sec-
tion accompany the item during the lifting operation
following the angles created during the passage
from an horizontal to a vertical position (pict.03).

Lifting operations
by means of crawler crane

Fagioli SPMTs’ took the reactor from its original
Pict .04
The solution to this issue was to lift the reactor by storing position and moved it toward the lifting
a crawler crane, taking it into a vertical position, area. The tailing frame system was connected to
laying the item onto a dedicated skidding system the SPMTs and to the base of the reactor. Once
in order to move it onto a skid tracks up to its final checked that the tailing frame structures were cor-
foundations. rectly installed onto SPMT trolleys (correct position
It sounds like a “piece of cake” operation but you’ll of the support stools, the primary and the secon-
see that it was not like that. dary pivot; the fixing clamps are correctly mounted
on the upper and lower parts of the tailing frames),
the SPMTs were positioned under the vessel and
SPMTs provided connected, ready for the first lifting by means of a
CC2800 crawler crane. SPMTs were gently lifted in
with tailing frame order to allow the insertion of the pivot pin and to
put the lower support clamps in contact with the
Once the vessel was onto its temporary supports, reactor skirt (pict.04).
Fagioli prepared and assembly a tailor made tailing Fagioli proceeded with the lifting of the vessel by
frame system onto SPMT trailers (pict.02). What is means of crawler crane and SPMTs, moving gently
a tailing frame system? A tailing system provide se- forward, and helped by the tailing frame.
veral advantages when restricted space or ground During the engineering studies for this project, ano-
pressures are an issue and in some situations, they ther issue was to find the right place for the positio-
can create cost-savings for clients by eliminating ning of a high capacity crawler crane for the lifting

28 Impiantistica Italiana - Maggio-Giugno 2023