MST Safety & Environmental Regulations 5

Question 1

Under 33 CFR 159, what size recreational vessel is required to have a Type I, II, or IV marine sanitation device (MSD) to manage sewage?

Accepted Answer

Vessels with installed toilets, regardless of length

Answer

Any vessel (recreational or commercial) equipped with an installed toilet must have an approved MSD under 33 CFR 159, regardless of vessel length.

Question 2

A technician installs a new battery bank on a vessel. Under ABYC E-10, what is required to prevent accidental shorting of the battery terminals?

Accepted Answer

Insulated battery terminal covers or boots on all exposed terminals

Answer

ABYC E-10 requires that all exposed battery terminals be protected with insulated covers or boots to prevent accidental short-circuit contact.

Question 3

Which regulation sets the requirements for engine exhaust emission certification labels that must be affixed to new marine spark-ignition engines sold in the US?

Accepted Answer

40 CFR Part 1045

Answer

40 CFR Part 1045 contains EPA emission standards for spark-ignition marine engines and requires manufacturers to affix an EPA-certified emission control information label.

Question 4

What does a 'No Discharge Zone' (NDZ) mean for a vessel operating in that area?

Accepted Answer

No sewage may be discharged overboard even if treated by a Type I or II MSD

Answer

In an EPA-designated NDZ, all overboard discharge of sewage is prohibited, including discharge treated by Type I or II MSDs; holding tanks must be used.

Question 5

Under OSHA 29 CFR 1910.147, what procedure must a marine technician follow before servicing a vessel's inboard engine to prevent unexpected startup?

Accepted Answer

Lockout/Tagout (LOTO) — disable and lock out the ignition and fuel systems

Answer

OSHA's Control of Hazardous Energy standard (Lockout/Tagout) requires workers to isolate and lock out all energy sources before performing service that could result in unexpected machinery startup.

(MST) Marine Service Technician Practice Test

(MST) Marine Service Technician Practice Test

MST Safety & Environmental Regulations 5