M. S. Notice 02 of 2012 - Prevention of Air Pollution-NOx Emissions limits for new engines-reg.

Applicable to: Vessels other than River Sea Vessels (RSVs) Category

Effective Date: 19 January 2012

Superseded Circulars: Engineering Circular No.98 dated 25.11.2008, No. 137 dated 18.08.2011, Letter to M/s ICC Shipping Association, No. ENG/OPP/MARPOL- 38(5)/2004 dated 18.10.2011

Key Changes and Requirements

1. NOx Emission Limits for New Engines

The MEPC agreed amendments confirm the proposed three-tier structure for new engines, depending on the date of installation:

Tier I: 17.0 g/kWh (2000-2011)
Tier II: 14.4 g/kWh (2011 onwards, outside ECA)
Tier III: 3.4 g/kWh (2016 onwards, in ECA)

2. NOx Emission Limits for Existing Engines

Existing engines (>5000 kW, displacement ≥90L/cylinder, installed 1990-2000) must meet Tier I limits (17.0 g/kWh). If not, they must be upgraded to meet Tier I limits by the first renewal survey, with extensions available if the upgrading system is not yet commercially available.

3. RSV Category Vessels

Type 3 and Type 4 RSVs must comply with Tier II limits (2011 onwards), while Type 1 and Type 2 RSVs must comply with Tier I limits (2012 onwards).

Important Note

Compliance with this circular is mandatory for the grant of a licence under section 406(3) of the M.S. Act, 1958, as amended.

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