Marine Technician Safety & Environmental Practices Flashcards

Under MARPOL Annex V, what is the default rule for garbage discharge in special areas such as the Antarctic?

Answer: No discharge of any garbage is permitted

In MARPOL Annex V special areas, no garbage of any kind may be discharged into the sea.

A marine technician notices oil sheen on bilge water before pumping overboard. What is the correct action?

Answer: Process through an approved oily water separator before discharge

Oil-contaminated bilge water must be processed through an approved oily water separator (OWS) to meet the 15 ppm limit before any overboard discharge.

Which label color indicates an NFPA 704 health hazard on a chemical storage placard?

Answer: Blue

In the NFPA 704 diamond, the blue quadrant (left) represents health hazard on a 0–4 scale.

When using a grinding wheel near a fuel tank, which control measure is MOST critical?

Answer: Purging and certifying the tank gas-free before work begins

Spark-generating work near any fuel tank requires the tank to be purged and declared gas-free by an approved tester to eliminate explosion risk.

What is the purpose of a Safety Data Sheet (SDS) Section 8?

Answer: Exposure controls and personal protective equipment requirements

SDS Section 8 covers exposure controls, occupational exposure limits, and required PPE for safe handling.

Which class of USCG-approved fire extinguisher is required where Class B fires (flammable liquids) are the primary hazard in a marine engine room?

Answer: B-I or B-II portable extinguisher

USCG regulations require B-I or B-II rated extinguishers in machinery spaces where flammable liquid fires are the dominant risk.

A refrigerant leak test using an electronic halogen detector in an enclosed engine room requires the technician to first:

Answer: Ventilate the space and check oxygen level before entry

Enclosed spaces must be ventilated and oxygen levels verified (19.5–23.5%) to ensure safe breathing conditions before a technician enters.