the IHS Ballast Water Guide - RWO Marine Water Technology

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Sponsored by IHS Fairplay Solutions Guide to Ballast Water Treatment Systems
The countries that have offi cially declared
their support are Albania, Antigua & Barbuda,
Barbados, Brazil, Canada, Cook Islands,
Croatia, Egypt, France, Iran, Kenya, Kiribati,
Lebanon, Liberia, Malaysia, Maldives,
Marshall Islands, Mexico, Mongolia,
Montenegro, the Netherlands, Nigeria,
Norway, Palau, Republic of Korea, Saint Kitts
and Nevis, Sierra Leone, South Africa, Spain,
Sweden, Syrian Arab Republic, Trinidad &
Tobago and Tuvalu.
Under the IMO regulations there are two
treatment standards. These are designated D1
and D2.
D1 is a ballast water exchange (BWE) rather
than treatment standard. It calls for 95% of
the water to be exchanged 200nm off shore in
at least 200m of water or for a pump-through
of three times the volume of each tank.
Because no treatment of the water is involved
it is seen as a temporary method of ensuring
species transfer is limited, if not eliminated.
The D2 standard, applicable to
newbuildings and eventually to all aff ected
existing ships under a rolling programme,
requires the installation of ballast-water
Table 1: IMO Ballast water treatment compliance schedule
Ballast
capacity (m 3 )
Construction
date
< 1,500 < 2009 D1 or
D2
≤ 2009
D2
≥ 1,500 or
≤ 5,000
< 2009 D1 or
D2
≤2009
D2
treatment systems. Systems must be typeapproved
and capable of meeting a cleaning
standard that results in fewer than 10 viable
organisms per cubic metre if the organisms
are 50μm or larger, or 10 viable organisms
per millilitre if they are smaller than 50μm.
The convention document has a number
of associated guidelines, some of which are
now obsolete. However, operators should be
aware of guideline G4, which covers practical
matters such as development of the ballast
water management plan that all ships will
need to have on board.
Type-approval of systems follows one of
two paths depending on whether or not the
treatment process makes use of an ‘active
substance’. Active substances – chemical or
biological biocides – used in the treatment
process must also be approved by the IMO. All
systems must undergo tests at a shore testing
station and on board vessels under operational
conditions before gaining approval.
The approval process for a system that
does not use an active substance is laid down
in guideline G8; for systems that do the
procedure is in guideline G9.
First intermediate or renewal survey, whichever occurs fi rst after the anniversary of the
date of delivery in the year indicated below
2009 2010 2011 2012 2013 2014 2015 2016 2017
> 5,000 < 2012 D1 or
D2
≤ 2012 N/A D2
© IHS Global Limited 2012 7
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D2
D2
D2