Clasification Society Rulefinder 2016 - Version 9.25

Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.198(62) – 2011 Guidelines Addressing Additional Aspects to the Nox Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems – (Adopted on 15 July 2011) - Annex – 2011 Guidelines Addressing Additional Aspects to the Nox Technical Code 2008 with regard to Particular Requirements related to Marine Diesel Engines fitted with Selective Catalytic Reduction (SCR) Systems - 6 Test Procedures for Scheme B - 6.4 Calculation of the specific emission

6.4 Calculation of the specific emission

6.4.1 The NO_x emission value of the engine system fitted with SCR should be calculated as follows:

Where:

η_i

=

NO_x reduction rate (%) derived in accordance with section 6.3 of these guidelines;

=

Mass flow of NO_x gas measured in accordance with section 6.2 of these guidelines;

=

Weighting factor;

P _i

=

Measured power at individual mode points in accordance with section 6.2 of these guidelines.
The weighting factors and number of modes (n) used in above calculation shall be according to the provisions of section 3.2 of the NTC 2008.

6.4.2 The NO_x emission value (g/kWh) calculated in accordance with paragraph 6.4.1 of these guidelines should be compared to the applicable emission limit. This emission value is entered into 1.9.6 of the Supplement to the EIAPP certificate (appendix I of the NTC 2008).

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