In accordance with the international MARPOL Annex VI regulations, the nitrous oxide (NOx) emissions associated with certain diesel engines are required to operate under certain acceptable limits. To which of the listed engine applications would the NOx emission regulations apply?
β’ MARPOL Annex VI β Regulation 13 (NOx) applicability criteria β’ The power rating threshold (in kW) at which NOx rules start to apply β’ Specific exemptions for engines used only in emergencies or for lifesaving appliances
β’ First, decide whether the NOx rules are triggered by engines above or below a certain kW rating. Which side of 130 kW is covered? β’ Next, think about why the regulations might treat emergency and lifesaving engines differently from normal propulsion or generator engines. β’ Ask yourself: Among the listed options, which engines are meant for routine operation versus only during emergencies or drills?
β’ Verify the exact kW threshold in MARPOL Annex VI Reg. 13 for diesel engines subject to NOx limits. β’ Check whether emergency diesel-generator engines are fully subject to the NOx limits or explicitly exempted. β’ Check whether lifeboat engines are covered by MARPOL Annex VI NOx rules or specifically exempt as lifesaving appliances.
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