Subject to the provisions of regulation 3 of this Annex the control
of discharges of residues of Noxious Liquid Substances or ballast
water, tank washings or other mixtures containing such substances
shall be in compliance with the following requirements.
1
Discharge provisions
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1.1 The discharge into the sea of residues of
substances assigned to Category X, Y or Z or of those provisionally
assessed as such or ballast water, tank washings or other mixtures
containing such substances shall be prohibited unless such discharges
are made in full compliance with the applicable operational requirements
contained in this Annex.
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1.2 Before any prewash or discharge procedure
is carried out in accordance with this regulation, the relevant tank
shall be emptied to the maximum extent in accordance with the procedures
prescribed in the Manual.
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1.3 The carriage of substances which have not
been categorized, provisionally assessed or evaluated as referred
to in regulation 6 of this
Annex or of ballast water, tank washings or other mixtures containing
such residues shall be prohibited along with any consequential discharge
of such substances into the sea.
2
Discharge standards
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2.1 Where the provisions in this regulation allow
the discharge into the sea of residues of substances in Category X,
Y or Z or of those provisionally assessed as such or ballast water,
tank washings or other mixtures containing such substances the following
discharge standards shall apply:
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.1 the ship is proceeding en route at a speed
of at least 7 knots in the case of self-propelled ships or at least
4 knots in the case of ships which are not self-propelled;
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.2 the discharge is made below the waterline through
the underwater discharge outlet(s) not exceeding the maximum rate
for which the underwater discharge outlet(s) is (are) designed; and
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.3 the discharge is made at a distance of not
less than 12 nautical miles from the nearest land in a depth of water
of not less than 25 metres.
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2.2 For ships constructed before 1 January 2007
the discharge into the sea of residues of substances in Category Z
or of those provisionally assessed as such or ballast water, tank
washings or other mixtures containing such substances below the waterline
is not mandatory.
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2.3 The Administration may waive the requirements
of paragraph 2.1.3 for substances in Category Z, regarding the distance
of not less than 12 nautical miles from the nearest land for ships
solely engaged in voyages within waters subject to the sovereignty
or jurisdiction of the State the flag, of which, the ship is entitled
to fly. In addition, the Administration may waive the same requirement
regarding the discharge distance of not less than 12 nautical miles
from the nearest land for a particular ship entitled to fly the flag
of their State, when engaged in voyages within waters subject to the
sovereignty or jurisdiction of one adjacent state after the establishment
of an agreement, in writing, of a waiver between the two coastal States
involved provided that no third party will be affected. Information
on such agreement shall be communicated to the Organization within
30 days for further circulation to the Parties to the Convention for
their information and appropriate action if any.
3
Ventilation of cargo residues
Ventilation procedures approved by the Administration may be
used to remove cargo residues from a tank. Such procedures shall be
in accordance with appendix 7 of
this Annex. Any water subsequently introduced into the tank shall
be regarded as clean and shall not be subject to the discharge requirements
in this Annex.
4
Exemption for a prewash
On request of the ship’s master an exemption for a prewash
may be granted by the Government of the receiving Party, where it
is satisfied that:
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.1 the unloaded tank is to be reloaded with the
same substance or another substance compatible with the previous one
and that the tank will not be washed or ballasted prior to loading;
or
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.2 the unloaded tank is neither washed nor ballasted
at sea. The prewash in accordance with the applicable paragraph of
this regulation shall be carried out at another port provided that
it has been confirmed in writing that a reception facility at that
port is available and is adequate for such a purpose; or
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.3 the cargo residues will be removed by a ventilation
procedure approved by the Administration in accordance with appendix 7 of this Annex.
5
The use of cleaning agents or additives
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5.1 When a washing medium other than water, such
as mineral oil or chlorinated solvent, is used instead of water to
wash a tank, its discharge shall be governed by the provisions of
either Annex I or Annex II, which would apply to the medium had it been carried
as cargo. Tank washing procedures involving the use of such a medium
shall be set out in the Manual and be approved by the Administration.
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5.2 When small amounts of cleaning additives (detergent
products) are added to water in order to facilitate tank washing,
no additives containing Pollution Category X components shall be used
except those components that are readily biodegradable and present
in a total concentration of less than 10% of the cleaning additive.
No restrictions additional to those applicable to the tank due to
the previous cargo shall apply.
6
Discharge of residues of Category X
7
Discharge of residues of Category Y and Z
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7.1
Subject to the provision
of paragraph 1, the following provisions shall apply:
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.1 With respect to the residue discharge procedures
for substances in Category Y or Z the discharge standards in regulation 13.2 shall apply.
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.2 If the unloading of a substance of Category
Y or Z is not carried out in accordance with the Manual, a prewash
shall be carried out before the ship leaves the port of unloading,
unless alternative measures are taken to the satisfaction of the surveyor
referred to in regulation 16. 1 of
this Annex to remove the cargo residues from the ship to quantities
specified in this Annex. The resulting tank washings of the prewash
shall be discharged to a reception facility at the port of unloading
or another port with a suitable reception facility provided that it
has been confirmed in writing that a reception facility at that port
is available and is adequate for such a purpose.
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.3 For High-Viscosity or Solidifying Substances
in Category Y the following shall apply:
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.3.1 a prewash procedure as specified in appendix 6 shall be applied;
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.3.2 the residue/water mixture generated during
the prewash shall be discharged to a reception facility until the
tank is empty; and
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.3.3 any water subsequently introduced into the
tank may be discharged into the sea in accordance with the discharge
standards in regulation 13.2.
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.4 For substances assigned to
category Y that are persistent floaters with a viscosity equal to or greater
than 50 mPa·s at 20ºC and/or with a melting point equal to or greater than
0ºC, as identified by '16.2.7' in column 'o' of chapter
17 of the IBC Code, the following shall apply in the areas in
paragraph 9:
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.1 a prewash procedure as specified in appendix VI to this
annex shall be applied;
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.2 the residue/water mixture generated during the prewash
shall be discharged to a reception facility at the port of unloading
until the tank is empty; and
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.3 any water subsequently introduced into the tank may be
discharged into the sea in accordance with the discharge standards in
regulation 13.2.
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7.2 Operational requirements for ballasting and
deballasting
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7.2.1 After unloading, and, if required, after
a prewash, a cargo tank may be ballasted. Procedures for the discharge
of such ballast are set out in regulation
13.2.
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7.2.2 Ballast introduced into a cargo tank which
has been washed to such an extent that the ballast contains less than
1 ppm of the substance previously carried, may be discharged into
the sea without regard to the discharge rate, ship’s speed and
discharge outlet location, provided that the ship is not less than
12 miles from the nearest land and in water that is not less than
25 metres deep. The required degree of cleanliness has been achieved
when a prewash as specified in appendix
6 has been carried out and the tank has been subsequently washed
with a complete cycle of the cleaning machine for ships built before
1 July 1994 or with a water quantity not less than that calculated
with k=1.0.
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7.2.3 The discharge into the sea of clean or segregated
ballast shall not be subject to the requirements of this Annex.
8
Discharges
in the Antarctic Area
9
Areas to which regulation 13.7.1.4 applies
9.1 the North West European waters include the North Sea and its
approaches, the Irish Sea and its approaches, the Celtic Sea, the English Channel and
its approaches and part of the North East Atlantic immediately to the west of Ireland.
The area is bounded by lines joining the following points:
-
48°27' N on the French coast
48°27' N; 006°25' W
49°52' N; 007°44' W
50°30' N; 012° W
56°30' N; 012° W
62° N; 003° W
62° N on the Norwegian coast
57°44.8' N on the Danish and Swedish coasts
9.2 the Baltic Sea area means the Baltic Sea proper with the Gulf of
Bothnia, the Gulf of Finland and the entrance to the Baltic Sea bounded by the parallel
of the Skaw in the Skagerrak at 57°44.8' N;
9.3 the Western European waters is an area that covers the United
Kingdom, Ireland, Belgium, France, Spain and Portugal, from the Shetland Islands in the
North to Cape S. Vicente in the South, and the English Channel and its approaches. The
area is bounded by lines joining the following points:
-
58°30' N on the UK coast
58°30' N; 000° W
62° N; 000° W
62° N; 003° W
56°30' N; 012° W
54°40'40.9'' N; 015° W
50°56'45.3'' N; 015° W
48°27' N; 006°25' W
48°27' N; 008° W
44°52' N; 003°10' W
44°52' N; 010° W
44°14' N; 011°34' W
42°55' N; 012°18' W
41°50' N; 011°34' W
37°00' N; 009°49' W
36°20' N; 009°00' W
36°20' N; 007°47' W
37°10' N; 007°25' W
51°22'25" N; 003°21'52.5" E
52°12' N; on the UK east coast
52°10.3' N; 006°21.8' W
52°01.52' N; 005°04.18' W
54°51.43' N; 005°08.47' W
54°40.39' N; 005°34.34' W
9.4 the Norwegian Sea is bounded by lines joining the following
points:
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69°47.6904' N; 030°49.059' E
69°58.758' N; 031°6.2598' E
70°8.625' N; 031°35.1354' E
70°16.4826' N; 032°4.3836' E
73°23.0652' N; 036°28.5732' E
73°35.6586' N; 035°27.3378' E
74°2.9748' N; 033°17.8596' E
74°20.7084' N; 030°33.5052' E
74°29.7972' N; 026°28.1808' E
74°24.2448' N; 022°55.0272' E
74°13.7226' N; 020°15.9762' E
73°35.439' N; 016°36.4974' E
73°14.8254' N; 014°9.4266' E
72°42.54' N; 011°42.1392' E
71°58.2' N; 009°54.96' E
71°37.5612' N; 008°43.8222' E
70°43.161' N; 006°36.0672' E
69°36.624' N; 004°47.322' E
68°58.3164' N; 003°51.2154' E
68°14.9892' N; 003°17.0322' E
67°25.7982' N; 003°10.2078' E
66°49.7292' N; 003°25.1304' E
66°25.9344' N; 003°17.1102' E
65°22.7214' N; 001°24.5928' E
64°25.9692' N; 000°29.3214' W
63°53.2242' N; 000°29.442' W
62°53.4654' N; 000°38.355' E
62° N; 001°22.2498' E
62° N; 004°52.3464' E