The EIAPP certificate is the engine's proof that it meets the NOx limits in MARPOL Annex VI. Without a valid certificate and updated Technical File, the ship may be detained during port state control. Ecoxy performs the measurements that form the basis for the certificate – during new builds, engine replacements, conversions, and periodic inspections.
EIAPP stands for Engine International Air Pollution Prevention. The certificate is issued per engine by the flag state or a classification society on its behalf, and confirms that the engine has been tested according to the NOx Technical Code and is within the applicable Tier limit.
It is easy to confuse with the IAPP certificate (International Air Pollution Prevention), which applies to the ship as a whole and covers all the requirements in Annex VI – sulfur, ozone-depleting substances, combustion plants, and NOx. EIAPP is the document behind the NOx part: one certificate per engine over 130 kW.
The certificate is always accompanied by a Technical File that describes the engine's NOx-critical components and settings, and by a Record Book of Engine Parameters where changes are recorded. The three documents are linked: the inspector checks that the engine on board matches what the certificate and file state.
In summary: New builds and new engines receive EIAPP after pre-certification at the manufacturer. The certificate remains valid through inspections on board and must be renewed or reissued upon engine replacement and major conversions. Ecoxy measures in all these situations.
Missing or invalid EIAPP is among the findings that port state control (PSC) most often reports under Annex VI, and can lead to detention until the documentation is in order.
From measurement to issued document
NOx is measured over the test cycle applicable to the engine (E2, E3, D2, or C1) – on a test bench during pre-certification, or on board during verification. Ecoxy uses chemiluminescence analyzer (CLA) and heated sampling lines in accordance with the NOx Technical Code.
The measurement results are compiled in an accredited report with weighted NOx value, load points, ambient corrections, and engine parameters. The report is the basis for the Technical File and for the application for certification.
The flag state – in Norway, the Norwegian Maritime Authority – or the classification society on its behalf issues the EIAPP certificate based on the report and Technical File. Ecoxy is approved by the Norwegian Maritime Authority as a competent actor for such measurements.
Over 700 measured engines on board more than 400 vessels
Norwegian Accreditation NA TEST 225 and approval from the Norwegian Maritime Authority. The reports are accepted by flag states and classification societies.
We measure during sailing when it suits the ship. The field team mobilizes to Norwegian and European ports at short notice.
EIAPP measurement is combined with documentation for the NOx fund and emission factors for the EU ETS and MRV report in the same mobilization.
The certificate has no specific expiration date, but its validity assumes that the engine can be shown to comply with the Technical File at each inspection. If the engine is modified beyond what the file allows, the certificate must be reissued.
Yes, all diesel engines over 130 kW, except for emergency engines and engines used solely in emergencies. Auxiliary engines are tested according to the D2 cycle.
Then the engine must be pre-certified, or tested on board according to the code's chapter 6 if the flag state accepts it. Ecoxy clarifies the procedure with the classification society and performs the measurement.
No. The sulfur requirements in Annex VI rule 14 are documented through the fuel delivery note (BDN), not through the engine certificate. Read more on the page about MARPOL Annex VI.
Send us the vessel, engine type, and why the certificate is needed (newbuilding, replacement, modification, or inspection), and we will propose implementation within 24 hours on weekdays.
Accreditations and certifications
NA TEST 225
NA VV-003
Kiwa Certified
Kiwa ISO 14001
Achilles
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