The Engine International Air Pollution Prevention Certificate (EIAPP Certificate)

Introduction

The EIAPP Certificate, standing for Engine International Air Pollution Prevention Certificate, specifically addresses the issue of Nitrogen Oxide (NOx) emissions in marine engines. NOx emissions encompass the overall release of nitrogen oxides, with the calculation being based on the weighted emission of NO2. This calculation is performed according to the NOx Technical Code, utilizing prescribed test cycles and measurement methods to ensure accuracy and compliance. The certificate serves as a testament to a vessel's adherence to stringent environmental standards and signifies its commitment to minimizing the impact of its operations on air quality. The determination of NOx emissions is crucial in promoting environmentally sustainable maritime practices, and the EIAPP Certificate plays a pivotal role in validating a vessel's efforts to mitigate its contribution to air pollution.

This Code is relevant to all diesel engines boasting a power output exceeding 130kW, either currently installed on ships subject to MARPOL Annex VI or designed and intended for such installation. However, certain exemptions exist, excluding specific engines described as follows:

1. Marine diesel engines designated exclusively for emergency use or to power devices or equipment intended solely for emergency purposes on the ship of installation. This also applies to marine diesel engines installed in lifeboats solely designated for emergency scenarios.
2. Marine diesel engines installed on ships exclusively engaged in voyages within waters subject to the sovereignty or jurisdiction of the State whose flag the ship is entitled to fly. Notably, this exception is conditional on the engine being subject to an alternative NOx control measure established by the Administration.

Moreover, the Code encompasses each marine diesel engine with a power output surpassing 130 kW that undergoes a major conversion on or after January 1, 2000. An exception is granted only if it can be convincingly demonstrated to the satisfaction of the Administration that the replacement engine is identical to the one it is replacing and does not fall under the aforementioned exemptions. This Code, therefore, serves as a comprehensive framework regulating diesel engines in the maritime domain, ensuring adherence to environmental standards and the incorporation of NOx control measures.

EIAPP Certification

Each marine diesel engine specified in above, except as otherwise permitted by this NOx Technical Code, shall be subject to the following surveys:

1. A pre-certification survey which shall be such as to ensure that the engine, as designed and equipped, complies with the applicable NOx emission limit contained in MARPOL Annex VI regulation 13. If this survey confirms compliance, the Administration shall issue an Engine International Air Pollution Prevention (EIAPP) Certificate.
2. An initial certification survey which shall be conducted on board a ship after the engine is installed but before it is placed in service. This survey shall be such as to ensure that the engine, as installed on board the ship, including any modifications and/or adjustments since the pre-certification, if applicable, complies with the applicable NOx emission limit contained in MARPOL Annex VI regulation 13. This survey, as part of the ship’s initial survey, may lead to either the issuance of a ship’s initial International Air Pollution Prevention (IAPP) Certificate or an amendment of a ship’s valid IAPP Certificate reflecting the installation of a new engine.
3. Renewal, annual and intermediate surveys, which shall be conducted as part of a ship’s surveys required by MARPOL Annex VI regulation 5, to ensure the engine continues to fully comply with the provisions of this Code.
4. An initial engine certification survey which shall be conducted on board a ship every time a major conversion, as defined in MARPOL Annex VI regulation 13, is made to an engine to ensure that the engine complies with the applicable NOx emission limit contained in regulation 13. This will result in the issue, if applicable, of an EIAPP Certificate and the amendment of the IAPP Certificate.

Procedures for NOx emission measurements on a test bed & demonstrating compliance with NOx emission limits on board

To comply with the various survey and certification requirements described in above, there are methods included in this Code from which the engine manufacturer, shipbuilder or ship-owner, as applicable, can choose to measure, calculate, test or verify an engine for its NOx emissions, as follows:

1. Test-bed testing for the pre-certification survey in accordance with chapter 5 of the Code;
2. Onboard testing for an engine not pre-certificated for a combined pre certification and initial certification survey in accordance with the full test-bed requirements of chapter 5 of the Code;
3. Onboard Engine Parameter Check method, using the component data, engine settings and engine performance data as specified in the Technical File, for confirmation of compliance at initial, renewal, annual and intermediate surveys for pre-certified engines or engines that have undergone modifications or adjustments to NOx critical components, settings and operating values, since they were last surveyed;
4. Onboard Simplified Measurement method for confirmation of compliance at renewal, annual and intermediate surveys or confirmation of pre-certified engines for initial certification surveys, when required; or
5. Onboard Direct Measurement and Monitoring method for confirmation of compliance at renewal, annual and intermediate surveys only.