MHI and Mitsui O.S.K. Lines Co-develop Japan's First ClassNK Approved
Installation Technology for Container-Type Ballast Water Treatment System
- Will Enable Faster BWTS Retrofitting and Deployment -
Tokyo, Jan 23, 2013 - (JCN Newswire) - Mitsubishi Heavy Industries, Ltd.
(MHI), working jointly with Mitsui O.S.K. Lines, Ltd. (MOL), has developed
installation technology of a ballast water treatment system (BWTS) enclosed in
a standard-size freight container in the hold of container ships. The system
using container-type BWTS design is the first to receive the concept approval
from Nippon Kaiji Kyokai (ClassNK)*. The new technology will significantly
reduce BWTS retrofitting turnaround time in comparison to engine-room BWTS
installation. Going forward, MHI and MOL will strengthen proposal-based
marketing of the new technology as a key solution for Ballast Water Management
(BWM) Convention compliance.
The container-type BWTS houses most devices necessary for ballast water
treatment in a 40-ft high-cube container - approx. 12.2meters (m) in length,
2.4m in width x 2.9m in height. Within the container, the devices are arranged
to maximize available space and facilitate maintenance.
When installing the container-type BWTS in the ship hold, preliminary surveys
are simplified because the only major work needed is ballast water
intake/discharge and power line connection. In most cases, work can be
completed in approximately two weeks, about seven days less than installation
in an engine room. The work does not require cutting of the ship's side
shell, and can be completed at pier, eliminating the need to drydock. The
container-type BWTS is ideal for ships that do not have enough space in the
engine room for related systems and piping.
MHI and MOL will verify the new system's operation by installing it on
MOL COMPETENCE, an 8,100 teu (20-ft equivalent unit) container ship that MHI
built at its Nagasaki Shipyard and Machinery Works and delivered to MOL in
2008. MHI has already begun detailed design of a system with the capacity to
process 750 cubic meter (m3) of ballast water per hour on the ship, with
installation slated for this spring.
Ballast water consists of seawater taken into and discharged from dedicated
water tanks to provide stability and adjust the ship's trim as desired,
according to cargo load and other factors. International concern about ballast
water has increased since the late 1980's due to the possibility of
transporting marine organisms beyond their habitat boundaries and affecting
marine ecosystem and biodiversity conservation. In response, the International
Maritime Organization (IMO) adopted the International Convention for the
Control and Management of Ships' Ballast Water and Sediments in February
2004, an agreement which is currently in the process of being ratified by IMO
members prior to its entry into force.
Going forward, MHI will widely promote the easy-to-install advantages of
container-type BWTS to ship owners and builders, and aggressively explore BWTS
installation needs for container ships and other types of vessel already in
* Concept Approval of Installation for Packaged Container Ballast Water
Treatment System in Cargo Hold.
About Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. (MHI), headquartered in Tokyo, Japan, is one
of the world's leading heavy machinery manufacturers, with consolidated
sales of 2,820.9 billion yen in fiscal 2011, the year ended March 31, 2012.
MHI's diverse lineup of products and services encompasses shipbuilding,
power plants, chemical plants, environmental equipment, steel structures,
industrial and general machinery, aircraft, space rocketry and air-conditioning
systems. For more information, please visit the MHI website at www.mhi.co.jp.
Mitsubishi Heavy Industries
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