ABYC Systems Certification Exam Review Questions And Answers
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Course
ABYC Systems Certification
Institution
ABYC Systems Certification
ABYC Systems Certification Exam Review Questions And Answers
Polyethylene - Answer-What is the most often used materials for potable water systems?
/.1. Copper Alloys (incl. bronze, brass and nickel-copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plasti...
ABYC Systems Certification Exam
Review Questions And Answers
Polyethylene - Answer-What is the most often used materials for potable water
systems?
/.1. Copper Alloys (incl. bronze, brass and nickel-copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plastic
5. FDA approved rubber - Answer-Name 5 materials allowable for contact use in
potable water systems:
/.Siphon Break - Answer-What device can be used to separate potable water from other
water systems?
/.Accumulator Tank, after pump/filter and before check-valve - Answer-What is the
device used to maintain a stable pressure and minimize pump cycling, and where
should it be located?
/.175% - Answer-At what what percentage of nominal working pressure shall the relief
valve be set?
/.No, typically these are too high (up to 400% of nominal pressure) - Answer-Is a
standard household type relief valve acceptable for hot water tanks?
/.nominal working pressure, not to exceed 80 PSI - Answer-For the pressure reducing
valve and check valve installed after a shore water connection, what is the maximum
allowable pressure?
/.overboard - Answer-Where shall the storage tank be vented?
/.3 PSI or mnfg's maximum, which ever is greater. - Answer-What is the maximum
allowable pressure to which the storage tank and vent system be subjected?
/.-40 °F to +140 °F - Answer-What temperate range is required for pumps to be able to
tolerate exposure?
/.257 F - Answer-When operating at an ambient temperature of 140 F, what is the max
allowable surface temperature of a pump?
/.True - Answer-Potable water systems must be equipped with a drain. T or F?
/.False - Answer-Storage tank inlet may also serve as the tank vent. T or F?
,/.True - Answer-Storage tank inlet caps must be retained to prevent loss. T or F?
/.True - Answer-Storage tanks must be equipped with a vent. T or F?
/.True - Answer-Storage tank vent may be used for filling purposes. T or F?
/.At least 1.5X the pressure exerted by the distance from the tank bottom to the deck fill
plate or vent, but not less than 3 PSI. - Answer-What rate of static pressure must a
storage tank withstand?
/.3 PSI - Answer-What is the max pressure that a desalinator can impart to a storage
tank?
/.True - Answer-Each desalinator must be equipped with an automatic shutoff salinity
detector. T or F?
/."For Cold Water Use Only" - Answer-What marking must be on pipe or tubes that are
not capable of handling hot water?
/.125 PSI, 300 PSI - Answer-What is the test pressure for water heater tank 15 gal or
less? over 15 gal but under 120 gal?
/.175 PSI - Answer-What is the max pressure relief valve setting for hot water tanks?
/.210 F - Answer-What is the max temperature relief setting for hot water tanks?
/.125 F - Answer-What is the max allowable water output temperature for hot water
system?
/.True - Answer-All potable water system connections shall be positioned above the
normal bilge water accumulation level. T or F?
/.True - Answer-Exposed metallic parts of a potable water system shall have provisions
for electrical bonding. T or F?
/.Improper venting - Answer-For what reason might a holding tank collapse during
pump-out?
/.Type I - Answer-What type of MSD (Marine Sanitation Device) discharges effluent with
fecal coliform bacteria count <= 1,000 (per 100 ml) and no suspended solids?
/.Type II - Answer-What type of MSD (Marine Sanitation Device) discharges effluent
with fecal coliform bacteria count <= 200 (per 100 ml) and <= 150 mg suspended solids
per liter?
, /.Type III - Answer-What type of MSD (Marine Sanitation Device) is designed to hold
sewage or any waste derived from sewage?
/.Retention System - Answer-What is the name given to the complete system including
toilets, hoses, pipes, holding tanks and fittings designed to receive, retain, vent and
pump out sewage?
/.Treatment System - Answer-What is the name of the system that includes all
sanitation equipment and fittings designed to receive, treat, vent and discharge
sewage?
/.Siphon break - Answer-What is another name for a vented loop that prevents back
siphoning by breaking suction yet allowing normal flow when pressurized?
/.5 - Answer-When calculating holding tank size, how many flushes per day are included
in the calculation?
/.0.14 gallons - Answer-What volume of human waste is used per flush when calculating
holding tank size?
/.True - Answer-True or False: If a portable toilet is secured and fitted with a deck pump-
out fitting and vent it qualifies as a type III device.
/.Prevention of siphoning - Answer-Why must careful consideration be given to the
location and routing of inlet and discharge lines for manual flush toilets when the "shut-
off" merely bleeds air into the inlet line?
/.Whenever components are installed below the max heeled water line - to prevent back
flow into the vessel or unintentional siphoning of untreated effluent overboard. - Answer-
When and why must siphon breaks be installed in a sewage system?
/.True - Answer-A seacock may be installed instead of a siphon break to prevent
discharge and back siphoning. T or F?
/.The handle must be lockable in the direction of the holding tank - Answer-What special
provision must be included for a sewage y-valve when the discharge seacock is not
lockable?
/.Air Gap, Vacuum Break, Double Check Valve, Dedicated Water Tank - Answer-Name
four ways to separate a fresh water flushing system from potable water system.
/.1.5 inches - Answer-What is the minimum hose ID for use on un-macerated sewage?
/.Secure mounting to minimize vibration effect, use flexible hose to connect to fitting and
hull. - Answer-What provisions should be made if using rigid PVC for sewage?
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