published Sat, February 18, 2012
Indonesia's most complete fertiliser producer orders second Siwertell unloader from Cargotec
Cargotec's 300th Siwertell unloader contract will see the company deliver its safe, efficient and environmentally-friendly Siwertell system to the Indonesian fertiliser producer, PT Petrokimia Gresik

In January this year, Cargotec secured a second contract for a
Siwertell ship unloader with the Indonesian fertiliser producer, PT
Petrokimia Gresik. "The customer chose our Siwertell technology
again, because they wanted a highly efficient continuous screw-type
unloader, which was also capable of safely handling potentially
explosive materials, such as sulphur," says Anders Paulsson,
Cargotec Sales Manager, Bulk Handling. "We have by far the most
knowledge and experience of screw-type unloaders, and can offer
them at competitive prices."
Cargotec supplied Petrokimia Gresik with a ST640-DOB Siwertell ship
unloader in 1996, and this latest contract will see it deliver the
latest version of the same type within the next 13 months. The ship
unloader will be erected at its operating site in Gresik, Indonesia
and able to handle rock phosphate, sulphur, urea and ammonium
sulphate at a rated capacity of 1,000t/h. Petrokimia plans to have
the site running from mid 2013.
"With a totally enclosed system, our Siwertell unloaders offer
customers an environmentally-friendly solution. Also, for handling
sulphur, the unloader has a built-in safety mechanism; our
award-winning 4S system," highlights Mr Paulsson.
The 4S (Siwertell sulphur safety system) is designed to minimise
the risk of explosions and detect fires. Cargotec now applies the
4S to all ship unloaders aimed for sulphur unloading, both those
for larger ships and road-mobile unloaders for smaller ships.
To prevent explosions and fires, the Siwertell unit is equipped
with nozzles that spray water at the inlet feeder and in the
conveyor transfer points. An automatic lubrication system is
installed to lubricate and cool down end bearings and intermediate
bearings. There are also fire detectors along the conveying line,
and when activated these automatically start the fire extinguishing
system spraying water and stop the conveyors. This is vital to
prevent fires entering the storage building. To manage any
explosion, the conveyor's steel casings are reinforced with
extra-thick steel, and explosion-venting valves are fitted along
the conveyors and dust collectors to relieve pressure.
Date: 18/02/2012