Practice Test Geeks(MTC) Marine Technician Certification Practice Test
← All MTC Flashcard Decks

Emissions Control & Environmental Compliance Flashcards

7 cards from real MTC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Emissions Control & Environmental Compliance flashcards as text

  1. Which MARPOL Annex governs the prevention of air pollution from ships, including NOx and SOx emissions?

    Answer: Annex VI

    MARPOL Annex VI, adopted in 1997 and entering into force in 2005, specifically addresses prevention of air pollution from ships.

  2. When a marine technician replaces an engine that does not comply with current EPA emission standards, what must be demonstrated?

    Answer: Replacement engine meets applicable Tier standards

    EPA requires replacement engines to comply with the emission standards (Tier level) applicable at the time of the replacement, not the original installation.

  3. What is the primary purpose of an Exhaust Gas Recirculation (EGR) system on a marine diesel engine?

    Answer: Reduce NOx by lowering combustion peak temperature

    EGR recirculates a portion of exhaust gas back into the intake, diluting oxygen content and lowering combustion temperatures to reduce NOx formation.

  4. A vessel's Bunker Delivery Note (BDN) must be retained onboard for a minimum of how many years under MARPOL Annex VI?

    Answer: 3 years

    MARPOL Annex VI requires the Bunker Delivery Note to be kept onboard for at least three years for port state control inspection.

  5. Which type of marine refrigerant is now prohibited under EPA Section 608 regulations due to its high ozone depletion potential?

    Answer: CFCs (e.g., R-12)

    CFCs such as R-12 (Freon) are prohibited under EPA Section 608 and the Montreal Protocol due to their severe ozone depletion potential.

  6. What action must a marine technician take before venting or recovering refrigerant from a vessel's AC or refrigeration system?

    Answer: Ensure only EPA Section 608-certified technicians perform the work

    EPA Section 608 requires that only certified technicians handle refrigerants during service, repair, or disposal of refrigeration and AC equipment.

  7. Which parameter does a shipboard oily water separator (OWS) monitor and control to ensure compliance with discharge limits?

    Answer: Oil content in parts per million (ppm)

    An OWS is equipped with an oil content monitor (OCM) that continuously measures ppm of oil in the effluent and stops discharge if the limit is exceeded.