ABYC SYSTEMS CERTIFICATION EXAM AND
PRACTICE EXAM NEWEST 2026 TEST BANK| ABYC
SYSTEMS CERTIFICATION EXAM PREP WITH 450
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+
Which of the following components may need to be by-passed for the
purpose of decommissioning?
A. Tanks, filters and water heaters
B. Strainers, tanks and pumps
C. Fixtures and lines
D. Dockside water connections - Correct Answer - A
Which of the following agencies must be referenced when selecting
materials for use in a portable water system?
A. DOT
B. FDA
C. USCG
D. UL - Correct Answer - B
According to ABYC, a biologically contaminated potable- water system
should be disinfected with a mixture of chlorine and have a strength of at
least:
A. 1,00ppm
pg. 1
,B. 100ppm
C. 10ppm
D. 1 ppm - Correct Answer - B
With a Type 1 sanitation system, waste is:
A. Treated and discharged
B. Treated and held
C. Stored in a holding tank
D. Discharged without treatment - Correct Answer - A
A head located below the vessel's dynamic waterline using RAW water
for flushing requires a:
A. Vented loop on its intake
B. Check valve on its intake
C. Strainer on its intake
D. Check valve on its discharge - Correct Answer - A
The result of an obstructed holding tank even during pump out may be:
A. A collapsed holding tank
B. Raw water flooding
C. An explosion
D. Tank contamination - Correct Answer - A
pg. 2
,Which of the following sanitation pumps could run dry without damage?
A. Centrifugal
B. Flexible impeller
C. Vane
D. Diaphragm - Correct Answer - D
The design and location of the vent for a potable water tank must
prevent the ingress of all of the following EXCEPT
A. Sea water
B. Air
C. Insects
D. Bilge water - Correct Answer - B
In a wet bilge location, which material is inappropriate for storage
tanks?
A. Aluminum
B. Cross linked polyethylene
C. Linear polyethylene
D. Composite - Correct Answer - A
In a 5000 series aluminum fuel tank, which of the following materials is
appropriate for direct contact?
A. Brass and Bronze
pg. 3
, B. Copper and plastic
C. Stainless and aluminum
D. pvc and nylon - Correct Answer - C
According to ABYC standards, metallic fuel tanks above a flat surface
must be separated from the surface by at least
A. 1"
B. 1/2"
C. 1/4"
D. 0" - Correct Answer - C
Which of the following tank materials are subject to expansion when
exposed to hydrocarbons?
A. Cross-linked polyethylene
B. aluminum
C. Stainless steal
D. Fiberglass - Correct Answer - A
Aluminum fuel tanks are subject to poultice corrosion when exposed to
A. continuously wet surfaces deprived of air
B. Stagnant air
C. high octane gasoline
D. low cetane diesel fuel - Correct Answer - A
pg. 4
PRACTICE EXAM NEWEST 2026 TEST BANK| ABYC
SYSTEMS CERTIFICATION EXAM PREP WITH 450
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+
Which of the following components may need to be by-passed for the
purpose of decommissioning?
A. Tanks, filters and water heaters
B. Strainers, tanks and pumps
C. Fixtures and lines
D. Dockside water connections - Correct Answer - A
Which of the following agencies must be referenced when selecting
materials for use in a portable water system?
A. DOT
B. FDA
C. USCG
D. UL - Correct Answer - B
According to ABYC, a biologically contaminated potable- water system
should be disinfected with a mixture of chlorine and have a strength of at
least:
A. 1,00ppm
pg. 1
,B. 100ppm
C. 10ppm
D. 1 ppm - Correct Answer - B
With a Type 1 sanitation system, waste is:
A. Treated and discharged
B. Treated and held
C. Stored in a holding tank
D. Discharged without treatment - Correct Answer - A
A head located below the vessel's dynamic waterline using RAW water
for flushing requires a:
A. Vented loop on its intake
B. Check valve on its intake
C. Strainer on its intake
D. Check valve on its discharge - Correct Answer - A
The result of an obstructed holding tank even during pump out may be:
A. A collapsed holding tank
B. Raw water flooding
C. An explosion
D. Tank contamination - Correct Answer - A
pg. 2
,Which of the following sanitation pumps could run dry without damage?
A. Centrifugal
B. Flexible impeller
C. Vane
D. Diaphragm - Correct Answer - D
The design and location of the vent for a potable water tank must
prevent the ingress of all of the following EXCEPT
A. Sea water
B. Air
C. Insects
D. Bilge water - Correct Answer - B
In a wet bilge location, which material is inappropriate for storage
tanks?
A. Aluminum
B. Cross linked polyethylene
C. Linear polyethylene
D. Composite - Correct Answer - A
In a 5000 series aluminum fuel tank, which of the following materials is
appropriate for direct contact?
A. Brass and Bronze
pg. 3
, B. Copper and plastic
C. Stainless and aluminum
D. pvc and nylon - Correct Answer - C
According to ABYC standards, metallic fuel tanks above a flat surface
must be separated from the surface by at least
A. 1"
B. 1/2"
C. 1/4"
D. 0" - Correct Answer - C
Which of the following tank materials are subject to expansion when
exposed to hydrocarbons?
A. Cross-linked polyethylene
B. aluminum
C. Stainless steal
D. Fiberglass - Correct Answer - A
Aluminum fuel tanks are subject to poultice corrosion when exposed to
A. continuously wet surfaces deprived of air
B. Stagnant air
C. high octane gasoline
D. low cetane diesel fuel - Correct Answer - A
pg. 4
