2.1 General
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Statutory Documents - IMO Publications and Documents - International Codes - NOx Technical Code - Technical Code on Control of Emission of Nitrous Oxides from Marine Diesel Engines - Chapter 2 - Surveys and Certification - 2.1 General

2.1 General

  2.1.1 Each marine diesel engine specified in 1.2, except as otherwise permitted by this Code, shall be subject to the following surveys:

  • .1 A pre-certification survey which shall be such as to ensure that the engine, as designed and equipped, complies with the NOx emission limits contained in regulation 13 of Annex VI. If this survey confirms compliance, the Administration shall issue an Engine International Air Pollution Prevention (EIAPP) Certificate.

  • .2 An initial certification survey which shall be conducted on board a ship after the engine is installed but before it is placed in service. This survey shall be such as to ensure that the engine, as installed on board the ship, including any modifications and/or adjustments since the pre-certification, if applicable, complies with the NOx emission limits contained in regulation 13 of Annex VI. This survey, as part of the ship's initial survey, may lead to either the issuance of a ship's initial International Air Pollution Prevention (IAPP) Certificate or an amendment of a ship's valid IAPP Certificate reflecting the installation of a new engine.

  • .3 Periodical and intermediate surveys, which shall be conducted as part of a ship's surveys required by regulation 5 of Annex VI, to ensure the engine continues to fully comply with the provisions of this Code.

  • .4 An initial engine's certification survey which shall be conducted on board a ship every time a substantial modification is made to an engine to ensure that the modified engine complies with the NOx emission limits contained in regulation 13 of Annex VI.

  2.1.2 To comply with the survey and certification requirements described in 2.1.1, there are five alternative methods included in this Code from which the engine manufacturer, ship builder or shipowner, as applicable, can choose to measure, calculate or test an engine for its NOx emissions, as follows:

  • .1 test-bed testing for the pre-certification survey in accordance with chapter 5;

  • .2 on-board testing for an engine not pre-certificated for a combined pre-certification and initial certification survey in accordance with the full test-bed requirements of chapter 5;

  • .3 on-board engine parameter check method for confirmation of compliance at initial, periodical and intermediate surveys for pre-certified engines or engines that have undergone modifications or adjustments to the designated components and adjustable features since they were last surveyed, in accordance with 6.2;

  • .4 on-board simplified measurement method for confirmation of compliance at periodical and intermediate surveys or confirmation of pre-certified engines for initial certification surveys, in accordance with 6.3 when required; or

  • .5 on-board direct measurement and monitoring for confirmation of compliance at periodical and intermediate surveys only, in accordance with 2.3.4, 2.3.5. 2.3.7, 2.3.8, 2.3.11, 2.4.4 and 5.5.

Parent topic: Chapter 2 - Surveys and Certification
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