ABYC Marine Systems Certification Qs & Anwers.
/. 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)
/.What is a portable toilet? - Answer-A fully self-contained head. Upper section holds
water for flushing. Treated water and waste are flushed to bottom each time. May be
used for several days before pump out is needed. Not permanently installed and legal to
use on all waters.
/.A head located below the vessel's dynamic waterline using raw water for flushing
requires a: - Answer-*Vented loop on its intake
/.The result of an obstructed holding tank vent during pump-out may be: - Answer-
Collapsed holding tank
/.Which sanitation pump could tun dry without damage? - Answer-Centrifugal pump.
/.A sea clock shall be securely mounted so that the assembly will withstand a ______ lb
static force applied for ______ to the ______ end of the assembly without failing to stop
the ingress of water. - Answer-500 lb, 30 seconds, inboard end.
/.A seacock shall be mounted in a ______ location, and installed so that it will open or
close with a _____ degree turn. - Answer-Readily accessible, 90 degree.
/.Why is a ball-valve connected to a thru-hull fitting not an ABYC approved installation? -
Answer-Incompatible threads, will not pass structural stress test, lack of base flange to
distribute the load.
/.What type of threads do seacocks have? - Answer-Straight threads.
/.What is gray water? - Answer-Wastewater from showers, sinks, dishwashers, and tubs
/.Per ABYC TH-22, sink and shower drains should contain a ______ to stop the ingress
of carbon monoxide. - Answer-P-trap
/.Ethylene glycol or propylene glycol, which one would kill you to drink? - Answer-
Ethylene glycol.
/.What is the lifespan of marine sanitation hoses? - Answer-*10 years. Inspected
annually.
/.*What are some materials for permanent fuel storage, and which is least desirable? -
Answer-Crosslinked polyethylene, 5000 series aluminum alloys, non-integral fiberglass
composite, mild steel(least desirable)
/.Where should siphon breaks/vented loops be installed? - Answer-Above the heeled
waterline as close to center as possible.
/. 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)
/.What is a portable toilet? - Answer-A fully self-contained head. Upper section holds
water for flushing. Treated water and waste are flushed to bottom each time. May be
used for several days before pump out is needed. Not permanently installed and legal to
use on all waters.
/.A head located below the vessel's dynamic waterline using raw water for flushing
requires a: - Answer-*Vented loop on its intake
/.The result of an obstructed holding tank vent during pump-out may be: - Answer-
Collapsed holding tank
/.Which sanitation pump could tun dry without damage? - Answer-Centrifugal pump.
/.A sea clock shall be securely mounted so that the assembly will withstand a ______ lb
static force applied for ______ to the ______ end of the assembly without failing to stop
the ingress of water. - Answer-500 lb, 30 seconds, inboard end.
/.A seacock shall be mounted in a ______ location, and installed so that it will open or
close with a _____ degree turn. - Answer-Readily accessible, 90 degree.
/.Why is a ball-valve connected to a thru-hull fitting not an ABYC approved installation? -
Answer-Incompatible threads, will not pass structural stress test, lack of base flange to
distribute the load.
/.What type of threads do seacocks have? - Answer-Straight threads.
/.What is gray water? - Answer-Wastewater from showers, sinks, dishwashers, and tubs
/.Per ABYC TH-22, sink and shower drains should contain a ______ to stop the ingress
of carbon monoxide. - Answer-P-trap
/.Ethylene glycol or propylene glycol, which one would kill you to drink? - Answer-
Ethylene glycol.
/.What is the lifespan of marine sanitation hoses? - Answer-*10 years. Inspected
annually.
/.*What are some materials for permanent fuel storage, and which is least desirable? -
Answer-Crosslinked polyethylene, 5000 series aluminum alloys, non-integral fiberglass
composite, mild steel(least desirable)
/.Where should siphon breaks/vented loops be installed? - Answer-Above the heeled
waterline as close to center as possible.
