7.4 Adding of oxygen
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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 - Appendix 4 - Calibration of the analytical instruments - 7 Efficiency test of the NOx converter - 7.4 Adding of oxygen

7.4 Adding of oxygen

  7.4.1 Via a T-fitting, oxygen or zero air shall be added continuously to the gas flow until the concentration indicated is about 20% less than the indicated calibration concentration given in 7.2 above (the analyser must be in the NO mode).

  7.4.2 The indicated concentration (c) shall be recorded. The ozonator must be kept deactivated throughout the process.

Parent topic: 7 Efficiency test of the NOx converter
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