International Convention for the Control and Management
of Ships' Ballast Water and Sediments, 2004
Article 1.12 "Ship means a vessel of any type whatsoever
operating in the aquatic environment and includes submersibles, floating
craft, floating platforms, FSUs and FPSOs."
"The requirements of regulation B-3, or any measures adopted
by a Party pursuant to article 2.3 and section C, shall not apply
to:
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.5 the discharge of ballast water and sediments
from a ship at the same location where the whole of that ballast water
and those sediments originated and provided that no mixing with unmanaged
ballast water and sediments from other areas has occurred. If mixing
has occurred, the ballast water taken from other areas is subject
to ballast water management in accordance with this annex."
At the location of operation
1 Preload tanks – for preloading of self-elevating
units' (SEU) leg foundation, seawater is taken on board into the preload
tanks. This seawater may be discharged, without management, at the
same location provided that no mixing with unmanaged seawater and
sediments from other areas has occurred.
2 Column stabilized units (CSU) – at its
location of operation, seawater is taken on board the CSU into the
ballast tanks to achieve the required operational draft. The seawater
and sediment in the ballast tanks may be discharged, without management,
at the same location provided that no mixing with unmanaged seawater
and sediments from other areas has occurred.
3 Management of residual seawater and sediment
in preload tanks of SEUs and ballast tanks of CSUs – residual
seawater and sediments in the tanks should be managed if these tanks
are to be ready for a different area of operation. A possible method
for management is by means of internal recirculation. Other methods
of ballast water management capable of achieving the D-2 standard
are also acceptable.
4 SEUs and CSUs take on board ballast water and
discharge it for transit to other areas. The transit ballast water
and sediments remaining in the preload and operational ballast tanks
of the mobile offshore units may be treated by an appropriately approved
internal circulation method. Other methods of ballast water management,
capable of providing the same level of protection to the environment,
human health, property or resources as described in regulations B-3.1
to B-3.5, may also be acceptable.
Regulation D-2
Ballast Water Performance Standard
"1 Ships conducting ballast water management in
accordance with this regulation shall discharge less than 10 viable
organisms per cubic metre greater than or equal to 50 micrometres
in minimum dimension and less than 10 viable organisms per millilitre
less than 50 micrometres in minimum dimension and greater than or
equal to 10 micrometres in minimum dimension; and discharge of the
indicator microbes shall not exceed the specified concentrations described
in paragraph 2.
2 Indicator microbes, as a human health standard,
shall include:
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.1 Toxicogenic Vibrio cholerae (O1
and O139) with less than 1 colony-forming unit (cfu) per 100 millilitres
or less than 1 cfu per 1 gram (wet weight) zooplankton samples;
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.2
Escherichia coli less than 250
cfu per 100 millilitres;
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.3 Intestinal Enterococci less than 100 cfu per
100 millilitres."
Internal circulation method
5 Treatment of any residual seawater, and sediments
as well as any transit ballast water using a ballast water management
system, approved in accordance with the Convention, incorporating
internal circulation may be accepted. This method does not treat the
ballast water during the uptake or discharge cycles, but would treat
the water only after it has been pumped into the tanks. Other methods
of ballast water management, capable of providing the same level of
protection to the environment, human health, property or resources
as described in regulations B-3.1 to B-3.5, may also be acceptable.
If the ballast water management system employs Active Substances,
measures such as neutralization may be needed prior to final discharge
of the managed ballast water.
"1 Ships of 400 gross tonnage and above to which
this Convention applies, excluding floating platforms, FSUs and FPSOs,
shall be subject to surveys specified below:
2 The Administration shall establish appropriate
measures for ships that are not subject to the provisions of paragraph
1 in order to ensure that appropriate provisions of this Convention
are complied with."
6 Mobile offshore units should comply with the
provisions of the Convention and should be surveyed and issued with
an International Ballast Water Management Certificate, according to
regulations E-1 and E-2 of the Convention, as applicable.