ABYC Systems Certification Exam Review
2026_2027
UPDATES
Questions And Answers
(Solved 100% Correct)
Certified Study Resources
,What is the most often used materials Polyethylene
for potable water systems?
Name 5 materials allowable for 1. Copper Alloys (incl. bronze, brass and nickel-
contact use in potable water systems: copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plastic
5. FDA approved rubber
What device can be used to separate Siphon Break
potable water from other water
systems?
What is the device used to maintain a Accumulator Tank, after pump/filter and before
stable pressure and minimize pump check-valve
cycling, and where should it be
located?
At what what percentage of nominal 175%
working pressure shall the relief valve
be set?
Is a standard household type relief No, typically these are too high (up to 400% of
valve acceptable for hot water tanks? nominal pressure)
For the pressure reducing valve and nominal working pressure, not to exceed 80 PSI
check valve installed after a shore
water connection, what is the
maximum allowable pressure?
Where shall the storage tank be overboard
vented?
What is the maximum allowable 3 PSI or mnfg's maximum, which ever is greater.
pressure to which the storage tank
and vent system be subjected?
,What temperate range is required for -40 °F to +140 °F
pumps to be able to tolerate
exposure?
When operating at an ambient 257 F
temperature of 140 F, what is the max
allowable surface temperature of a
pump?
Potable water systems must be True
equipped with a drain. T or F?
Storage tank inlet may also serve as False
the tank vent. T or F?
Storage tank inlet caps must be True
retained to prevent loss. T or F?
Storage tanks must be equipped with True
a vent. T or F?
Storage tank vent may be used for True
filling purposes. T or F?
What rate of static pressure must a At least 1.5X the pressure exerted by the distance
storage tank withstand? from the tank bottom to the deck fill plate or vent, but
not less than 3 PSI.
What is the max pressure that a 3 PSI
desalinator can impart to a storage
tank?
Each desalinator must be equipped True
with an automatic shutoff salinity
detector. T or F?
, What marking must be on pipe or "For Cold Water Use Only"
tubes that are not capable of handling
hot water?
What is the test pressure for water 125 PSI, 300 PSI
heater tank 15 gal or less? over 15
gal but under 120 gal?
What is the max pressure relief valve 175 PSI
setting for hot water tanks?
What is the max temperature relief 210 F
setting for hot water tanks?
What is the max allowable water 125 F
output temperature for hot water
system?
All potable water system connections True
shall be positioned above the normal
bilge water accumulation level. T or
F?
Exposed metallic parts of a potable True
water system shall have provisions
for electrical bonding. T or F?
For what reason might a holding tank Improper venting
collapse during pump-out?
What type of MSD (Marine Sanitation Type I
Device) discharges effluent with fecal
coliform bacteria count <= 1,000 (per
100 ml) and no suspended solids?
What type of MSD (Marine Sanitation Type II
Device) discharges effluent with fecal
coliform bacteria count <= 200 (per
100 ml) and <= 150 mg suspended
solids per liter?
2026_2027
UPDATES
Questions And Answers
(Solved 100% Correct)
Certified Study Resources
,What is the most often used materials Polyethylene
for potable water systems?
Name 5 materials allowable for 1. Copper Alloys (incl. bronze, brass and nickel-
contact use in potable water systems: copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plastic
5. FDA approved rubber
What device can be used to separate Siphon Break
potable water from other water
systems?
What is the device used to maintain a Accumulator Tank, after pump/filter and before
stable pressure and minimize pump check-valve
cycling, and where should it be
located?
At what what percentage of nominal 175%
working pressure shall the relief valve
be set?
Is a standard household type relief No, typically these are too high (up to 400% of
valve acceptable for hot water tanks? nominal pressure)
For the pressure reducing valve and nominal working pressure, not to exceed 80 PSI
check valve installed after a shore
water connection, what is the
maximum allowable pressure?
Where shall the storage tank be overboard
vented?
What is the maximum allowable 3 PSI or mnfg's maximum, which ever is greater.
pressure to which the storage tank
and vent system be subjected?
,What temperate range is required for -40 °F to +140 °F
pumps to be able to tolerate
exposure?
When operating at an ambient 257 F
temperature of 140 F, what is the max
allowable surface temperature of a
pump?
Potable water systems must be True
equipped with a drain. T or F?
Storage tank inlet may also serve as False
the tank vent. T or F?
Storage tank inlet caps must be True
retained to prevent loss. T or F?
Storage tanks must be equipped with True
a vent. T or F?
Storage tank vent may be used for True
filling purposes. T or F?
What rate of static pressure must a At least 1.5X the pressure exerted by the distance
storage tank withstand? from the tank bottom to the deck fill plate or vent, but
not less than 3 PSI.
What is the max pressure that a 3 PSI
desalinator can impart to a storage
tank?
Each desalinator must be equipped True
with an automatic shutoff salinity
detector. T or F?
, What marking must be on pipe or "For Cold Water Use Only"
tubes that are not capable of handling
hot water?
What is the test pressure for water 125 PSI, 300 PSI
heater tank 15 gal or less? over 15
gal but under 120 gal?
What is the max pressure relief valve 175 PSI
setting for hot water tanks?
What is the max temperature relief 210 F
setting for hot water tanks?
What is the max allowable water 125 F
output temperature for hot water
system?
All potable water system connections True
shall be positioned above the normal
bilge water accumulation level. T or
F?
Exposed metallic parts of a potable True
water system shall have provisions
for electrical bonding. T or F?
For what reason might a holding tank Improper venting
collapse during pump-out?
What type of MSD (Marine Sanitation Type I
Device) discharges effluent with fecal
coliform bacteria count <= 1,000 (per
100 ml) and no suspended solids?
What type of MSD (Marine Sanitation Type II
Device) discharges effluent with fecal
coliform bacteria count <= 200 (per
100 ml) and <= 150 mg suspended
solids per liter?
