4.2.1 Procedures for the certification of an EGC
unit
4.2.1.1 In order to meet the requirements of 4.1
either prior to, or after installation on board, each EGC unit should
be certified as meeting the Certified Value specified by the manufacturer
(e.g., the emission level the unit is capable of achieving on a continuous
basis) under the operating conditions and restrictions as given by
the EGC Technical Manual (ETM-A) as approved by the Administration.
4.2.1.2 Determination of the Certified Value should
be in accordance with the provisions of these Guidelines.
4.2.1.3 Each EGC unit meeting the requirements
of 4.2.1.1 should be issued with a SECC by the Administration. The
form of the SECC is given in Appendix I.
4.2.1.4 Application for an SECC should be made
by the EGC system manufacturer, shipowner or other party.
4.2.1.5 Any subsequent EGC units of the same design
and rating as that certified under 4.2.1.1 may be issued with an SECC
by the Administration without the need for testing in accordance with
4.2.1.1 subject to section 4.1.3 of these Guidelines.
4.2.1.6 EGC units of the same design, but with
ratings different from that certified under 4.2.1.1 may be accepted
by the Administration subject to section 4.1.4 of these Guidelines.
4.2.1.7 EGC units which treat only part of the
exhaust gas flow of the uptake in which they are fitted should be
subject to special consideration by the Administration to ensure that
under all defined operating conditions that the overall emission value
of the exhaust gas down stream of the system is no more than the Certified
Value.
4.2.2 EGC System Technical Manual “Scheme
A” (ETM-A).
4.2.2.1 Each EGC unit should be supplied with
an ETM-A provided by the manufacturer. This ETM-A should, as a minimum,
contain the following information:
-
(a) the identification of the unit (manufacturer,
model/type, serial number and other details as necessary) including
a description of the unit and any required ancillary systems;
-
(b) the operating limits, or range of operating
values, for which the unit is certified. These should, as a minimum,
include:
-
(i) maximum and, if applicable, minimum mass flow
rate of exhaust gas;
-
(ii) the power, type and other relevant parameters
of the fuel oil combustion unit for which the EGC unit is to be fitted.
In the cases of boilers, the maximum air/fuel ratio at 100% load should
also be given. In the cases of diesel engines whether the engine is
of 2 or 4-stroke cycle;
-
(iii) maximum and minimum washwater flow rate,
inlet pressures and minimum inlet water alkalinity (ISO 9963-1-2);
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(iv) exhaust gas inlet temperature ranges and
maximum and minimum exhaust gas outlet temperature with the EGC unit
in operation;
-
(v) exhaust gas differential pressure range and
the maximum exhaust gas inlet pressure with the fuel oil combustion
unit operating at MCR or 80% of power rating whichever is appropriate;
-
(vi) salinity levels or fresh water elements necessary
to provide adequate neutralizing agents; and
-
(vii) other factors concerning the design and
operation of the EGC unit relevant to achieving a maximum emission
value no higher than the Certified Value;
-
(c) any requirements or restrictions applicable
to the EGC unit or associated equipment necessary to enable the unit
to achieve a maximum emission value no higher than the Certified Value;
-
(d) maintenance, service or adjustment requirements
in order that the EGC unit can continue to achieve a maximum emission
value no higher than the Certified Value. The maintenance, servicing
and adjustments should be recorded in the EGC Record Book;
-
(e) corrective actions in case of exceedances
of the applicable maximum allowable SO2/CO2 ratio,
or wash water discharge criteria;
-
(f) a verification procedure to be used at surveys
to ensure that its performance is maintained and that the unit is
used as required (see section 4.4);
-
(g) through range performance variation in washwater
characteristics;
-
(h) design requirements of the washwater system;
and
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(i) the SECC.
4.2.2.2 The ETM-A should be approved by the Administration.
4.2.2.3 The ETM-A should be retained on board
the ship onto which the EGC unit is fitted. The ETM-A should be available
for surveys as required.
4.2.2.4 Amendments to the ETM-A which reflect
EGC unit changes that affect performance with respect to emissions
to air and/or water should be approved by the Administration. Where
additions, deletions or amendments to the ETM-A are separate to the
ETM-A as initially approved, they should be retained with the ETM-A
and should be considered as part of the ETM-A.
4.2.3.1 The EGC unit should be subject to survey
on installation and at Initial, Annual/Intermediate and Renewals Surveys
by the Administration.
4.2.3.2 In accordance with MARPOL Annex VI regulation
10, EGC units may also be subject to inspection by port State control.
4.2.3.3 Prior to use each EGC unit should be issued
with an SECC by the Administration.
4.2.3.4 Following the installation survey as required
by 4.2.3.1, section 2.6 of the Supplement to the ship’s International
Air Pollution Certificate should be duly completed.