WorldCargo
CARGO HANDLING
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using the parameter inputs relating to TEU XIN YA ZHOU at the Port of Los An- ...and in the same vein, Nexans introduced
cable drop, weight, travel speed, accelera- geles when the ship connected to the
this baloney cable last year in recognition of
tion and so on. shore supply.
the fact that relatively short lift height and slow
hoist speed cranes may not need to be fitted
with an expensive cable reel to control the pay-
Antwerp job Limited potential
in. The cable would typically be aimed at
The company will employ this system for Baltic ports are also encouraging cold
replacement cabling for older cranes
the cable reels it is supplying to 10 ironing to reduce emission levels when
Gottwald ASCs for DP World’s terminal berthed, but this is mainly directed to-
in Antwerp. This is the first series order wards ferries and roro vessels. These do sion levels as the mobile container han-
placed within the framework agreement not require an integrated cable reel as it dling trucks on the terminal. The lower
concluded between Wampfler and is possible to run the shore cable through freeboard of this type of vessel, if a plug-
Gottwald in 2005, and further ASC se- a watertight shell door (although not the in shore power supply were to be incor-
ries orders from Gottwald for Antwerp bunker door manifold connection), or porated, would also obviate the need for
are set to follow by 2010. A total of 100 along the stern ramp. a powered cable reel.
stacking cranes is envisaged. Container feeder ships, due to their However, some of the ports that han-
Wampfler will provide the complete lower electrical demand in port, could dle main line carriers, such as Gothenburg,
energy supply for the ASCs including the instead of cold ironing fit an auxiliary are keen to introduce cold ironing to its
frequency controlled cable reels for the harbour diesel genset powered by a deep sea carriers (cf Maersk and ACL),
main power supply and energy guiding Euromot stage 3a/EPA Tier 3 or higher which would require a cable reel based
chains for trolley traversing and vertical diesel engine to produce the same emis- shore-side connection. a74
movement of the spreader. Fully loaded,
the cranes travel at up to 240 m/min and
can accelerate up to 0.45 m/sec
2
.
Environmental scope
The development focus for the reel sup-
pliers in the marine and port sector has
been towards power supply for electric
RTGs, which is viewed as having con-
siderable potential. Cavotec MSL, for in-
stance, has secured orders to supply six,
double power supply units for
Novorossiysk Container Terminal, and a
further 22 single units for 11 electric-
powered RTGs for NCC’s new Ust-Luga
Container Terminal.
A number of projects have been ex-
ecuted in China and elsewhere in the Far
East, as previously reported in WorldCargo
News. Adding to the list, last October
Mitsui Engineering & Shipbuilding
(MES) reported that it had upgraded two
rubber-tyred Paceco Transtainers to run
off electrical shore power via a flexible
cable system.
On the face of it, fitting cable reeling
systems to RTGs is not a big problem in
itself, particularly as long travel speeds are
relatively slow. However, the comparison
is with ship-to-shore cranes, which are
also slow on the long travel axis. One ca-
ble manufacturer, Italy-based Tratos Cavi,
reports that it has developed cables with
increased pulling tension to allow easier
electrification of RTGs.
More generally, Tratos says that all its
R&D is geared towards engineering more
environment-friendly cable systems, and
building on its already well-established
“green” production methods. It has pro-
duced cables without halogens for years
We add the “E” to your RTG
and is currently working on a project to
use scrap to supply clean energy via py-
rolysis. Other developments include a spe-
Electrification of Rubber Tyred Gantries
cial cable for “cold ironing.”
One of the advantages of the RTG
market, apart from the greater number of
units deployed, is that there is a large
number of suppliers to this sector and it
appears to be one in which European Converting a conventional RTG into an electrical
RTG manufacturers are able to challenge
their Chinese competitors.
one (E-RTG
TM
) means to shut down the diesel
However, the push towards electrical-
generator and to power the RTG with electrical
powered RTGs is mainly driven by envi-
ronmental considerations. With difficult power only. This conversion is now made possib-
trading conditions forecast for at least a
year, will there still be a strong commit-
le with two different complete RTG electric power
ment for what are normally more expen-
solutions developed by Conductix-Wampfler:
sive environmental solutions?
Motorized Cable Reel Solution and Conductor
Plug and play
E-RTG
TM
One market that could show consider-
Bar Solution.
with Conductor Bar
able potential, but only if legislation were
to be introduced to promote it, is in the
Solution
supply of auxiliary electrical power to,
Conductix-Wampfl er... let us help you
mainly, container ships when in port
(“cold ironing”). There were moves to-
Conduct Your Business
wards introducing this as a requirement
for USWC ports and particularly Cali-
fornian ports where the drive for clean
www.conductix.com
air is particularly strong.
However, it is one thing to impose
such measures on ships using the port
during strong growth periods, but weak
economic climates do not lend themselves
to legislating shipping line customers, who
are suffering with falling cargo volumes,
E-RTG
TM
to invest in non-revenue generating
with Motorized Cable
projects.
Reel Solution
Some owners are already equipping
their vessels for cold ironing in advance
of legislation. For example, Yang Ming
Line will fit a Cavotec system, incorpo-
rating a power reel, to four 6600 TEU
newbuildings it has on order for 2010/
Visit us! Booth E2
A S I A
11 delivery. Cavotec has also conducted
www.toc-events.com
successful trials on China Shipping’s 8600
January 2009 31
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