The Marine Environmental Protection Committee,
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.291(71) - 2017 Guidelines Addressing Additional Aspects of the NOx Technical Code 2008 with Regard to Particular Requirements Related to Marine Diesel Engines Fitted with Selective Catalytic Reduction (SCR) Systems - (adopted on 7 July 2017) - The Marine Environmental Protection Committee,

The Marine Environmental Protection Committee,

RECALLING Article 38(a) of the Convention on the International Maritime Organization concerning the functions of the Marine Environment Protection Committee conferred upon it by international conventions for the prevention and control of marine pollution from ships,

RECALLING ALSO that, at its fifty-eighth session, it adopted, by resolution MEPC.176(58), a revised MARPOL Annex VI (hereinafter "MARPOL Annex VI") and, by resolution MEPC.177(58), a revised Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (hereinafter "NOX Technical Code 2008"),

NOTING regulation 13 of MARPOL Annex VI which makes the NOX Technical Code 2008 mandatory under that Annex,

NOTING ALSO that the use of NOX-reducing devices is envisaged in the NOX Technical Code 2008 and that selective catalytic reduction systems (hereinafter referred to as "SCR systems") are such NOX-reducing devices for compliance with the Tier III NOX limit,

NOTING FURTHER that, at its sixty-second session, it adopted, by resolution MEPC.198(62), the 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 (hereinafter "the 2011 Guidelines"), and, at its sixty-eighth session, by resolution MEPC.260(68), amendments thereto,

RECOGNIZING the need to update the 2011 Guidelines in line with latest developments,

HAVING CONSIDERED, at its seventy-first session, a draft revision of the 2011 Guidelines, prepared by the Sub-Committee on Pollution Prevention and Response, at its fourth session,

1 ADOPTS the 2017 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, as set out at annex to the present resolution;

2 INVITES Administrations to take the annexed Guidelines into account when certifying engines fitted with SCR systems;

3 REQUESTS Parties to MARPOL Annex VI and other Member Governments to bring the annexed Guidelines to the attention of shipowners, ship operators, shipbuilders, marine diesel engine manufacturers and any other interested parties;

4 AGREES to keep these Guidelines under review in light of experience gained with their application;

5 SUPERSEDES the 2011 Guidelines, adopted by resolution MEPC.198(62) and amended by resolution MEPC.260(68).


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