Chapter 2.2 - Procedures for pre-certification of an Engine Group
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Chapter 2.2 - Procedures for pre-certification of an Engine Group

Parent topic: Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (NOx Technical Code)

Chapter 2.2.4

Chapter 2.2.4 reads as follows:

 There are engines which, due to their size, construction and delivery schedule, cannot be pre-certified on a test-bed. In such cases, the engine manufacturer, shipowner or ship builder shall make application to the Administration requesting an on-board test (see 2.1.2.2). The applicant must demonstrate to the Administration that the on-board test fully meets all of the requirements of a testbed procedure as specified in chapter 5 of this Code. Such a survey may be accepted for one engine or for an engine group represented by the parent engine only, but it shall not be accepted for an engine family certification. In no case shall an allowance be granted for possible deviations of measurements if an initial survey is carried on board a ship without any valid pre-certification test.

Interpretation:

 For engines undergoing an on-board certification test, to be issued with an EIAPP Certificate, the same procedures apply as if the engine had been pre-certified on a test-bed:

  • (a) the survey on-board meets the pre-certification survey requirements; and

  • (b) the on-board test fully meets all of the requirements of a test-bed procedure as specified in chapter 5 of the NOx Technical Code; and

  • (c) the application average weighted NOx emission value meets the requirements of regulation 13 of Annex VI; and

  • (d) the engine has an approved Technical File.

Chapter 2.2.8

Chapter 2.2.8 reads as follows:

 A flow chart providing guidance for compliance with the requirements of a pre-certification survey for marine diesel engines intended for installation on board of ships is provided in figure 1 of appendix 2 of this Code.

Interpretation:

 The text in chapter 2 gives the certification procedures which should be followed. Where discrepancies exist with figure 1, the text of chapter 2 takes precedence.

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