Exam (elaborations)
ABYC Systems Questions and Answers Graded A+
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Exam of 26 pages for the course Abyc at Abyc (ABYC Systems)
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ABYC SystemsE - answerBall valves may be sealed to through hull fittings with:
A. 5200
B. SikaFlex
C. Teflon
D. All the above
E. None of the above
B - answerTubes are measured by:
A. ID
B. OD
C. nominal size
C - answerpipes may not be connected by:
A. Welding
B. Threaded fittings
C. Compression fittings
D. Glue
C - answerTech A says Seacocks must be readily accessible. Tech B say its ok to have
them within 12" of the engine. who is correct?
A. Tech A
B. Tech B
C. Both
D. neither
D - answerTech A says that it is all right to connect an auxiliary line to the potable water
pump as long as there is a siphon break. Technician B says you must have a lockable Y
valve to prevent cross contamination. who is right?
A. Tech A
B. Tech B
C. Both
D. Neither
D - answerA bildge pump discharge line must be:
,A. equipped with a check valve to prevent back flow and nuisance cycling
B. Equipped with a properly installed seacock
C. No more than 30' long
D. non of the above
D - answerball valves below the waterline must be:
A. ABYC approved
B. ABYC Certified
C. ABYC endorsed
D. none of the above
D - answerpotable water systems must discharge
A. into a sump
B. Overboard
C. Into the grey water tank
D. any of the above
OD ID - answerTubes are measured in _________ and hoses are measured in
_________
A - answerWhich 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
B - answerWhich 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
B - answerAccording 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
B. 100ppm
C. 10ppm
D. 1 ppm
, B - answerContamination of the potable-water system with ethylene glycol may be
explained by:
A. Excessive pump cycling
B. Leaking heat exchanger on a water heater
C. Nuisance tripping of pump circuit breaker
D. Close proximity of engine to water heater
A - answerWith 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
A - answerA head located below the vessels'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
A - answerThe 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
D - answerWhich of the following sanitation pumps could run dry without damage?
A. Centrifugal
B. Flexible impeller
C. Vane
D. Diaphragm
B - answerThe 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
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