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SSEP • Written Exam

(a) Explain the purpose of NOx Technical Code and its applicability to marine diesel engines. (8)

(b) Explain certification requirements under NOx Technical Code. (6)

(c) Explain the purpose of NOx technical file and its importance (6)

Appeared In: Sep 2024Aug 2023Feb 2023

✓ Verified Model Answer (Text Solution)

Structured for DG Shipping MEO Class II examination scoring criteria.

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Part (a)

Explain the purpose of NOx Technical Code and its applicability to marine diesel engines.

Part (b)

Explain certification requirements under NOx Technical Code.

Part (c)

Explain the purpose of NOx technical file and its importance.

(Refer to the detailed answers for 679d0e23bc2c89ff76a2992f and 694a8e750457bfed0da63f81.)

Part (a)

Purpose and applicability: The NOx Technical Code prescribes the procedures for the certification (survey and testing) of marine diesel engines to verify they meet the applicable NOx emission limits under MARPOL Annex VI Regulation 13. It defines the measurement/test procedures, the engine test cycle, the requirements for the NOx Technical File and the EIAPP certificate, and the verification procedures. It applies to marine diesel engines above 130 kW installed on ships subject to MARPOL Annex VI (main and auxiliary engines), covering the Tier I/II/III requirements by construction date and ECA.

Part (b)

Certification requirements: Pre-certification (engine tested on the test bed to measure the NOx value and establish the components/settings), onboard survey/certification (the engine is surveyed at installation, the particulars and settings verified, and an EIAPP certificate issued with the NOx Technical File), renewal/endorsement at the ship's surveys, and re-certification after any major modification affecting emissions.

Part (c)

Purpose and importance of the NOx Technical File: It documents the engine's certified parameters/settings by which NOx compliance is achieved, proving compliance with the EIAPP and MARPOL Annex VI; it allows the flag/RO/port State to verify the engine has not been modified outside the certified parameters, supports maintenance and modification control, and is essential for the IAPP survey and port State control - without it the vessel is non-compliant.

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