ABYC Marine Systems
Certification 2026/2027 |
Study & Exam Guide
Which components may need to be by-passed for decommissioning? - ANSWER-
*Tanks, filters, water heaters. They can be drained and cleaned separately, saving
money on antifreeze
Which agency should be referenced when selecting materials for potable water
systems? - ANSWER-FDA
Biologically contaminated potable-water systems should be disinfected with a
mixture of chlorine and have a strength of at least: - ANSWER-100 ppm
Contamination of the potable water system with ethylene glycol may be explained
by: - ANSWER-*Leaking heat exchanger on a water heater.
What is the ABYC standard referencing potable water? - ANSWER-H-23
What component is intended to maintain a stable pressure within a potable water
system and to minimize pump cycling? - ANSWER-Accumulator tank.
, List components of potable water system in order from the deck fill - ANSWER-*
*
Deck fill, freshwater tank, filter/strainer, accumulator tank, check valve, *vent,
water heater, faucets, etc.
What is the desired operating pressure within a potable water system found on
board boats? - ANSWER-35-50 psi
What is the main job of a potable water system? - ANSWER-To deliver drinking
water without introducing detectable taste, odor, or color.
If the potable water system includes a water heater tank, what shall be located on
the water heater? - ANSWER-Pressure relief valve.
What is the first component that tends to freeze in a potable water system? -
ANSWER-Faucets
What is the function of a type I or II MSD - ANSWER-Treat waste to reduce
bacteria and visible solids, and discharge directly overboard. Type II is more
powerful.
What is the function of a type III MSD? - ANSWER-Head connected directly to a
holding tank which can be emptied at marinas and pump-out stations.
What is the function of a Y-valve in MSDs - ANSWER-Allow waste to be diverted
and discharged directly overboard (outside 3-mile discharge limit)
Certification 2026/2027 |
Study & Exam Guide
Which components may need to be by-passed for decommissioning? - ANSWER-
*Tanks, filters, water heaters. They can be drained and cleaned separately, saving
money on antifreeze
Which agency should be referenced when selecting materials for potable water
systems? - ANSWER-FDA
Biologically contaminated potable-water systems should be disinfected with a
mixture of chlorine and have a strength of at least: - ANSWER-100 ppm
Contamination of the potable water system with ethylene glycol may be explained
by: - ANSWER-*Leaking heat exchanger on a water heater.
What is the ABYC standard referencing potable water? - ANSWER-H-23
What component is intended to maintain a stable pressure within a potable water
system and to minimize pump cycling? - ANSWER-Accumulator tank.
, List components of potable water system in order from the deck fill - ANSWER-*
*
Deck fill, freshwater tank, filter/strainer, accumulator tank, check valve, *vent,
water heater, faucets, etc.
What is the desired operating pressure within a potable water system found on
board boats? - ANSWER-35-50 psi
What is the main job of a potable water system? - ANSWER-To deliver drinking
water without introducing detectable taste, odor, or color.
If the potable water system includes a water heater tank, what shall be located on
the water heater? - ANSWER-Pressure relief valve.
What is the first component that tends to freeze in a potable water system? -
ANSWER-Faucets
What is the function of a type I or II MSD - ANSWER-Treat waste to reduce
bacteria and visible solids, and discharge directly overboard. Type II is more
powerful.
What is the function of a type III MSD? - ANSWER-Head connected directly to a
holding tank which can be emptied at marinas and pump-out stations.
What is the function of a Y-valve in MSDs - ANSWER-Allow waste to be diverted
and discharged directly overboard (outside 3-mile discharge limit)
