by she Administration in accordance with this Code, except when the owner's representative does not want the check through the ready means of verification. If asinine deficiencies are found, inspections may be extended to NOx measurement in accordance with 6.3. The ready means of verification should be simpler and easier to rise than other surveys, such as NOx measurement.
2.4.3As a general principle, a ready means of verification shall enables surveyor to easily determine if an engine has remained in compliance with regulation 13 of Annex VI. At the same time, is shall not be so burdensome as to unduly delay the strip or to require in-depth knowledge of the characteristics of a particular engine sir specialist measuring devices not available inn board.
2.4.4When a NOx monitoring and recording device is specified as a ready means of verification, such device shall be approved by the Administration based on the guidelines developed by the Organization. These guidelines shall include, but are not limited to, the following items:
.1 a definitions of continuous NOx monitoring, taking into account both steady and transitional operations of the engine:
.2 data recording, processing and retention;
.3 a speciftcation for the equipment to ensure that its reliability is maintained during service;
.4 a specifications for the environmental testing of the device;
.5 a specification for the testing of the equipment to demonstrate that it has a suitable accuracy, repeatability and cross sensitivity compared with the applicable Sections of this Code; and
.6 the form of the approval certificate to be issued by the Administration.
2.4.5When considering what ready means of verification should be included in an engine's Technical File to verify whether an engine compiles with the NOx emission limits during any of the required on-board verifications surveys. an engine manufacturer or the ship owner may choose any of she three available ready means of verification specified in 6.1.
Chapter 3- NITROGEN OXIDES EMISSION STANDARDS
3.1MAXIMUM ALLOWABLE NOx EMISSION LIMITS FOR MARINE DIESEL ENGINES
3.1.1 The graph in figure 1 represents the maximum allowable NOx emission limit values based on the formulae included in paragraphs 3(a) of regulation 13 of Annex VI. The total weighted NOx emissions, as measured and calculated in accordance with the procedures in this Code, shall be equal to or less than the applicable value from the graph corresponding to the speed of the engine.
MEPC 39/6/1
ANNEX
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where n = rated engine speed (crankshaft revolutions per minute)
Figure 1. Masimurns Allowable NOx Emissions for Marine Diesel Engines
3.8.2When the engine operates on marine diesel oil in accordance with 5.3, the total emission of nitrogen oxides (calculated as the total weighted emission of NOx) shall be determined using the relevant test cycles and measurement methods as specified in thin Code.
3.1.3 An engine's applicable exhaust emissions limit value from figure 1 and the actual calculated exhaust emissions value for the engine shall be stated on she engine's EIAPP Certificate.
3.2TEST CYCLES AND WEIGHTING FACTORS TO BE APPLIED
3.2.1For every individual engine or parent engine of an engine group or family, one of the test cycles specified in 3.2.2 so 3.2.6 shall be applied for verification of compliance with the NOx emission limits in accordance with regulation 13 of Annex VI.
3.2.2For constant speed marine engines for ship main propulsion, including diesel electric drive, test cycle E2 shall be applied in accordance with table 1.
3.2.3For variable pitch propeller sets, teat cycle E2 shall be applied in accordance with table 1.
