NOx Emission Certification of marine diesel engines

Lloyd's Register's product approval schemes play a key role to the success of our reputation for quality.

Lloyd's Register provides certification for compliance with MARPOL 73/78, Annex VI (Regulations for the Preventing of Air Pollution from Ships). Annex VI will require all ships to obtain an International Air Pollution Prevention (IAPP) certificate, whilst Regulation 13 requires new or modified marine diesel engines, whose power out put is greater than 130 kW, to be issued with an Engine International Air Pollution Prevention (EIAPP) certificate effective from January 1, 2000, once it has entered into force.

Will Annex VI apply to my ships?

MARPOL 73/78 Annex VI will apply to all ships of 400 tonnes gross and above, to fixed and floating drilling rigs and other platforms. It covers:
• ozone depleting substances
• nitrogen oxide (NOx) emissions from diesel engines
• sulphur oxide (SOx) emissions from ships
• volatile organic compound emission from cargo tanks of oil tankers (vapour control systems)
• shipboard incineration
• reception facilities
• fuel oil quality.

For ships less than 400 tonnes, the flag administration may establish equivalent requirements to meet the intention of the Annex.

How do I demonstrate my ship complies?

By having a survey carried out by, or on behalf of (e.g. by Lloyd's Register), the flag administration to confirm that the applicable requirements of Annex VI are complied with. On satisfactory completion, an IAPP certificate will be issued to the ship.

What is an EIAPP certificate?

This is the pre-certification issued for marine diesel engines after demonstrating compliance with NOx emission limits. Testing is carried out in accordance with the Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines (the NOx Technical Code).

Must I have an EIAPP certificate?

Yes, if a diesel engine above 130 kW:
• is installed on a ship constructed on or after January 1, 2000, or
• if a diesel engine undergoes a major conversion on or after January 1, 2000.
This requirement covers diesel engines for propulsion, cargo pumps, electric generation, harbour generation, etc. It does not apply to engines, which are used solely for emergency purposes.

The EIAPP forms part of the IAPP certificate.

How do I obtain an EIAPP certificate?

Engine manufacturers are testing their engines for compliance with the NOx emission requirements and obtaining EIAPP certificates or equivalents. They are supplying a copy of this certification with an approved Technical File and On-Board NOx Verification Procedure when requested.

How does an engine manufacturer obtain an EIAPP certificate?

The manufacturer requires Lloyd's Register to certify their engines for compliance with the NOx Technical Code. This entails, verifying the test facilities, witnessing the NOx testing according to the appropriate test cycle, and reviewing and approving the technical file and on-board NOx Verification Procedure. If found satisfactory, the appropriate NOx certification is issued.

Where engines are to be produced in series, then a suitable engine(s) representing the family or group is certified along with approval of the corresponding conformity of production procedure.

What service can Lloyd's Register provide?

Lloyd's Register can carry out the surveys for both the IAPP and EIAPP certification. Our certification is recognised by the majority of flag administrations. The EIAPP and IAPP certification may be carried out at ports, shipyards, and manufacturing locations world wide.
Note: Until Annex VI is ratified, Lloyd's Register issues provisional certificates to allow ship owners and engine manufacturers to be prepared for its entry into force.

What next?

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