Marine Technician Safety & Environmental Practices 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 Marine Technician Safety & Environmental Practices flashcards as text
When testing a marine fuel system for leaks after reassembly, which method is the safest initial check?
Answer: Pressure-test with compressed air or nitrogen at the specified working pressure, then inspect with soapy water
Pneumatic pressure testing with inert gas or air followed by soap-bubble inspection is safe because it avoids introducing flammable fuel under pressure during initial checks.
What does the term 'lockout/tagout' (LOTO) require a marine technician to do before servicing electrical or mechanical equipment?
Answer: Isolate all energy sources and apply a personal lock so equipment cannot be re-energized until the lock is removed
LOTO (OSHA 1910.147) requires physically isolating energy sources and applying a personal lock that only the technician can remove, preventing accidental re-energization.
Which antifouling paint ingredient is now widely banned in US waters due to its toxicity to non-target marine organisms?
Answer: Tributyltin (TBT)
Tributyltin (TBT) was banned by the Organotin Antifouling Paint Control Act and the IMO AFS Convention due to severe toxicity to mollusks and other marine life.
A marine technician accidentally knocks approximately two gallons of diesel into a navigable waterway. What is the immediate regulatory obligation?
Answer: Report the discharge to the US Coast Guard National Response Center at 1-800-424-8802
Any discharge of oil in a harmful quantity into navigable US waters must be immediately reported to the NRC under the Clean Water Act and OPA 90.
Which respiratory protection is required when sanding antifouling bottom paint containing cuprous oxide below the waterline?
Answer: NIOSH-approved half-face respirator with P100 particulate filters
Cuprous oxide dust is a heavy metal hazard; NIOSH-approved P100 particulate protection in a half-face respirator provides adequate defense for dry sanding operations.
Under ABYC E-11, what color is used for the DC negative (ground) conductor on a boat's 12-volt system?
Answer: Black or yellow
ABYC E-11 designates black (or yellow in some circuits) as the DC negative return conductor color to distinguish it from AC wiring conventions.
Which of the following best describes the Vessel General Permit (VGP) requirement for vessel discharges in US waters?
Answer: It establishes effluent limits and best management practices for incidental discharges such as deck washdown and bilge water
The EPA's Vessel General Permit (VGP) covers 26 categories of incidental discharges (e.g., deck wash, bilge water) and mandates best management practices and monitoring.