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Worksheets

Marine Plumbing and Sanitation FINAL

Total questions: 139

Worksheet time: 2hrs 4mins

Name
Class
Date
1.

What is the primary function of a marine freshwater system?

a)

Bilge water disposal

b)

Fire suppression

c)

Provide potable water to sinks, showers, and appliances

d)

Fuel dilution

2.

What is the common color used for potable water hoses in marine plumbing?

a)

Red

b)

Blue

c)

White

d)

Black

3.

Which of the following is commonly used to pressurize marine freshwater systems?

a)

Diaphragm pump

b)

Centrifugal blower

c)

Impeller pump

d)

Bilge pump

4.

What is a "Y-valve" used for in a marine sanitation system?

a)

Mixing saltwater and freshwater

b)

Switching toilet discharge between holding tank and overboard

c)

Reversing water flow in the galley

d)

Regulating water pressure

5.

What must a marine toilet be connected to in areas where overboard discharge is prohibited?

a)

Vented loop

b)

Raw water strainer

c)

Holding tank

d)

Watermaker

6.

What is a vented loop designed to prevent in marine plumbing systems?

a)

Tank pressurization

b)

Backflow and siphoning

c)

Salt buildup

d)

Odor emissions

7.

Which material is most commonly used for marine plumbing freshwater tubing?

a)

Galvanized steel

b)

Copper

c)

PEX

d)

PVC

8.

What is the function of a marine accumulator tank?

a)

Add chemicals to freshwater

b)

Maintain consistent water pressure

c)

Trap debris from intake

d)

Mix hot and cold water

9.

A manual bilge pump is typically used as:

a)

A backup to electric bilge pumps

b)

A pressure water source

c)

A tank cleaning device

d)

A washdown pump

10.

What component ensures that tank air pressure remains equalized as water is added or removed?

a)

Seacock

b)

Vent hose

c)

Deck fill

d)

Shutoff valve

11.

What type of valve should always be installed below the waterline on thru-hull fittings?

a)

Ball valve

b)

Needle valve

c)

Gate valve

d)

Butterfly valve

12.

Marine greywater typically comes from:

a)

Toilet discharge

b)

Shower and sink drains

c)

Fuel overflow

d)

Air conditioning

13.

What is the primary concern with marine sanitation hoses over time?

a)

Melting

b)

Freezing

c)

Odor permeation

d)

Discoloration

14.

What is the most common fitting type used with flexible marine plumbing hose?

a)

Welded flanges

b)

Barbed fittings with hose clamps

c)

Push-to-connect

d)

Compression couplings

15.

Which tank material is preferred for marine potable water storage?

a)

Stainless steel or FDA-approved plastic

b)

Galvanized iron

c)

Rubber bladder

d)

Glass

16.

What type of sealant is commonly used for marine plumbing threads?

a)

Silicone grease

b)

Teflon tape or pipe dope

c)

Wax ring

d)

Petroleum jelly

17.

What should be regularly checked to prevent freshwater contamination?

a)

Bilge level

b)

Vent filters

c)

Water heater anode

d)

Tank vents and fill caps

18.

What system removes salt and other impurities from seawater for onboard use?

a)

Heat exchanger

b)

Watermaker

c)

Macerator

d)

Vent loop

19.

What is the minimum recommended hose clamp configuration for marine thru-hull connections?

a)

One clamp

b)

No clamp

c)

Two stainless steel clamps

d)

Plastic zip ties

20.

What is the purpose of a macerator pump in a marine system?

a)

Pressurize freshwater

b)

Filter bilge water

c)

Grind and pump sewage

d)

Cool the engine

21.

The water hose to a fresh water system should be:

a)

marked for pressure capacity and/or limitations

b)

marked for RV applications

c)

marked for potable or drinking water

d)

made of rubber

22.

Typically the most difficult task of repairing a fresh water tank is:

a)

locating the leak

b)

removing the tank

c)

obtaining the correct parts

d)

finding the correct epoxy

23.

The only viable way to permanently repair a polyethylene water tank is by using:

a)

pressure

b)

heat

c)

vacuum

d)

cement

24.

Which of the following is an acceptable method of permanently repairing a cracked polyethylene freshwater tank?

a)

spin weld

b)

plastic weld

c)

two-part epoxy

d)

proflex

25.

The non-pressure water storage tank is permitted to be filled by the onboard city water system:

a)

if the tank’s vent is equal to or larger than fill line

b)

only on large Class A motorhomes

c)

if city water pressure exceeds pump pressure

d)

only on unregulated city water supplies

26.

Which of the following is NOT a component on a fresh water tank?

a)

baffles

b)

vent opening

c)

accumulator

d)

drain opening

27.

To sanitize a freshwater storage tank, prepare a chlorine disinfection using:

a)

15 gallons of water and 1/4 cup of household bleach

b)

8 gallons of water to 1/2 cup of household bleach

c)

1/2 cup of water and 1/4 cup of household bleach

d)

1 cup of water to 1/4 cup of household bleach

28.

A freshwater system should be sanitized:

a)

with the water heater bypassed

b)

once per month

c)

if water becomes contaminated

d)

once per week

29.

What is the most common cause for fresh water tank expansion?

a)

restricted vent

b)

crushed fill hose

c)

blocked discharge line

d)

mis-positioned tank probe

30.

A spouting fresh water gravity fill means:

a)

the water heater is in bypass position

b)

there is improper venting

c)

the water pump check valve is defective

d)

the tank drain is open

31.

Vibration noise in a kitchen slide water line is most likely due to:

a)

unsecured water distribution line

b)

low battery voltage

c)

excessive system pressure

d)

defective faucet

32.

What causes intermittent hot and cold water at all faucets?

a)

bypass water heater

b)

defective shower hose

c)

open water heater bypass valve

d)

water heater just turned on

33.

The size of hose in a freshwater distribution system is determined by:

a)

the number of fixtures

b)

city water pressure

c)

run length to city connection

d)

size of water storage tank

34.

Purpose of an accumulator tank:

a)

maintain constant water pressure

b)

increase system pressure by 15 psi

c)

assist in winterization

d)

increase water capacity

35.

A rigid conduit of copper or plastic is called:

a)

hose

b)

tubing

c)

pipe

d)

plumbing

36.

Which clamp provides a 360-degree spring seal?

a)

Uponor

b)

Epoxy

c)

Riser

d)

C-clamp

37.

The Uponor ratchet tool is used for:

a)

wire cutting

b)

tubing cutting

c)

clamp compression

d)

cable stripping

38.

Best method for leak testing a fresh water system:

a)

electronic leak detector

b)

pressure test with gauge

c)

visual check

d)

leak detection solution

39.

An Uponor clamp must be attached:

a)

at the very edge of the tubing

b)

1/8” to 1/4” from the end of the tubing

c)

at least 3/8” from the end of the tubing

d)

covering the entire fitting barb

40.

If the water pump runs but no water flow is present, the first check should be:

a)

test the faucet

b)

check the water pump screen/strainer

c)

check the battery

d)

replace the accumulator

41.

A sputtering faucet when first opened usually indicates:

a)

air in the lines

b)

clogged city water connection

c)

defective faucet aerator

d)

a blocked vent

42.

A properly operating freshwater pump will:

a)

cycle constantly

b)

turn on only when a faucet is opened

c)

stay on even when faucets are closed

d)

never turn off

43.

If a pump cycles when no faucets are open, the most likely cause is:

a)

clogged aerator

b)

a water leak

c)

battery voltage too high

d)

vent hose kinked

44.

Low flow at all fixtures is MOST likely caused by:

a)

clogged aerator

b)

faulty city water connection

c)

clogged filter or strainer

d)

low propane pressure

45.

A freshwater pump that is very noisy may be due to:

a)

missing accumulator

b)

loose mounting

c)

clogged vent

d)

cracked tank

46.

Water pump rubber mounting feet help to:

a)

increase pressure

b)

decrease noise and vibration

c)

increase amperage

d)

hold water

47.

A broken water heater check valve will cause:

a)

spitting at faucets

b)

reduced water pressure

c)

leaks at the fill connection

d)

loss of hot water system pressure

48.

The purpose of a city water regulator is to:

a)

increase pressure

b)

reduce pressure to safe levels

c)

bypass the water pump

d)

close the vent valve

49.

What is the typical RV city water pressure range?

a)

80–90 PSI

b)

50–60 PSI

c)

30–40 PSI

d)

10–20 PSI

50.

Polyethylene tanks are repaired permanently using:

a)

ABS cement

b)

heat welding

c)

two-part epoxy

d)

silicone adhesive

51.

What material are most RV drain pipes made of?

a)

Copper

b)

Steel

c)

ABS Plastic

d)

CPVC

52.

The minimum slope required for RV drainage piping is:

a)

1/16 inch per foot

b)

1/8 inch per foot

c)

1/4 inch per foot

d)

1/2 inch per foot

53.

An ASTVD (anti-siphon trap vent device) is used to:

a)

replace a vent cap

b)

allow air into a drain system

c)

block odors from escaping

d)

create positive pressure

54.

True or False: Holding tanks must always be installed with baffles.

a)

True

b)

False

55.

To sanitize a freshwater system, how long must bleach solution sit?

a)

1 hour

b)

2 hours

c)

4 hours

d)

8 hours

56.

If the freshwater tank is 'burping' at the fill, the problem is likely:

a)

blocked vent line

b)

clogged fill line

c)

closed drain valve

d)

city water backflow

57.

Which fitting material requires solvent welding for drainage?

a)

PEX

b)

ABS

c)

Copper

d)

Polyethylene

58.

The term SWHT refers to:

a)

Small Water Holding Tank

b)

Solid Waste Holding Tank

c)

Sanitation Water Handling Tank

d)

Sewer Waste Handling Tube

59.

Gray water is collected from all EXCEPT:

a)

kitchen sink

b)

shower

c)

lavatory

d)

toilet

60.

The water strainer protects the pump from:

a)

vent line blockage

b)

debris in the water

c)

electrical shorts

d)

backflow pressure

61.

Which component prevents sewer odors from entering the RV?

a)

Check valve

b)

P-trap

c)

Hose clamp

d)

Pressure regulator

62.

When welding polyethylene tanks, the tool must include:

a)

cement brush

b)

air regulator

c)

propane torch

d)

sandpaper

63.

A flexible hose in an RV is commonly used where?

a)

Fresh water tank fill

b)

In slide-out rooms

c)

Roof vents

d)

Drain pipe riser

64.

Which clamp type is used on flexible hoses?

a)

Worm gear clamp

b)

Rivet clamp

c)

Heat shrink

d)

Bolt clamp

65.

Recirculating toilets in RVs require:

a)

continuous water supply

b)

12VDC power

c)

propane heating

d)

city water connection

66.

Best location to install a pressure gauge for testing:

a)

Drain valve

b)

Faucet outlet

c)

Pump discharge line

d)

Fill inlet

67.

What causes 'cycling' of the water pump when no faucet is open?

a)

Faulty fuse

b)

Water leak

c)

Pressure too high

d)

Vent line clogged

68.

How do you remove an Uponor clamp?

a)

Cut tubing

b)

Pull by hand

c)

Use clamp removal tool

d)

Rotate fitting

69.

What does DWV mean?

a)

distribution waste valve

b)

distribution water valve

c)

drain, waste, vent

d)

drain, water, ventilate

70.

Why is ABS piping used in the RV industry?

a)

it resists impact in cold temperature

b)

it can be easily identified because of its green color

c)

it holds up during travel conditions

d)

it is cheaper to install

71.

What sealant is most appropriate to use when assembling a city water test kit?

a)

thread

b)

acrylic resin

c)

butyl rubber

d)

epoxy

72.

Which step is part of a freshwater system inspection?

a)

conduct a water system leak test

b)

use three grades of antifreeze

c)

disconnect hot and cold water lines

d)

perform a 3 minute drop test

73.

When inspecting a freshwater system, make sure it functions properly on

a)

pump and city water hookup

b)

pump only

c)

city water hookup only

d)

external pump

74.

The water hose to a fresh water system should be:

a)

marked for pressure capacity and/or limitations

b)

marked for RV applications

c)

marked for potable or drinking water

d)

made of rubber

75.

Typically the most difficult task of repairing a fresh water tank is:

a)

locating the leak

b)

removing the tank

c)

obtaining the correct parts

d)

finding the correct epoxy

76.

The only viable way to permanently repair a polyethylene water tank is by using:

a)

pressure

b)

heat

c)

vacuum

d)

cement

77.

Which of the following is an acceptable method of permanently repairing a cracked polyethylene freshwater tank?

a)

spin weld

b)

plastic weld

c)

two-part epoxy

d)

proflex

78.

The non-pressure water storage tank is permitted to be filled by the onboard city water system:

a)

if the tank’s vent is equal to or larger than fill line

b)

only on large Class A motorhomes

c)

if city water pressure exceeds pump pressure

d)

only on unregulated city water supplies

79.

Which of the following is NOT a component on a fresh water tank?

a)

baffles

b)

vent opening

c)

accumulator

d)

drain opening

80.

To sanitize a freshwater storage tank, prepare a chlorine disinfection using:

a)

15 gallons of water and 1/4 cup of household bleach

b)

8 gallons of water to 1/2 cup of household bleach

c)

1/2 cup of water and 1/4 cup of household bleach

d)

1 cup of water to 1/4 cup of household bleach

81.

A freshwater system should be sanitized:

a)

with the water heater bypassed

b)

once per month

c)

if water becomes contaminated

d)

once per week

82.

What is the most common cause for fresh water tank expansion?

a)

restricted vent

b)

crushed fill hose

c)

blocked discharge line

d)

mis-positioned tank probe

83.

A spouting fresh water gravity fill means:

a)

the water heater is in bypass position

b)

there is improper venting

c)

the water pump check valve is defective

d)

the tank drain is open

84.

Vibration noise in a kitchen slide water line is most likely due to:

a)

unsecured water distribution line

b)

low battery voltage

c)

excessive system pressure

d)

defective faucet

85.

What causes intermittent hot and cold water at all faucets?

a)

bypass water heater

b)

defective shower hose

c)

open water heater bypass valve

d)

water heater just turned on

86.

The size of hose in a freshwater distribution system is determined by:

a)

the number of fixtures

b)

city water pressure

c)

run length to city connection

d)

size of water storage tank

87.

Purpose of an accumulator tank:

a)

maintain constant water pressure

b)

increase system pressure by 15 psi

c)

assist in winterization

d)

increase water capacity

88.

A rigid conduit of copper or plastic is called:

a)

hose

b)

tubing

c)

pipe

d)

plumbing

89.

Which clamp provides a 360-degree spring seal?

a)

Uponor

b)

Epoxy

c)

Riser

d)

C-clamp

90.

The Uponor ratchet tool is used for:

a)

wire cutting

b)

tubing cutting

c)

clamp compression

d)

cable stripping

91.

Best method for leak testing a fresh water system:

a)

electronic leak detector

b)

pressure test with gauge

c)

visual check

d)

leak detection solution

92.

An Uponor clamp must be attached:

a)

at the very edge of the tubing

b)

1/8” to 1/4” from the end of the tubing

c)

at least 3/8” from the end of the tubing

d)

covering the entire fitting barb

93.

If the water pump runs but no water flow is present, the first check should be:

a)

test the faucet

b)

check the water pump screen/strainer

c)

check the battery

d)

replace the accumulator

94.

A sputtering faucet when first opened usually indicates:

a)

air in the lines

b)

clogged city water connection

c)

defective faucet aerator

d)

a blocked vent

95.

A properly operating freshwater pump will:

a)

cycle constantly

b)

turn on only when a faucet is opened

c)

stay on even when faucets are closed

d)

never turn off

96.

If a pump cycles when no faucets are open, the most likely cause is:

a)

clogged aerator

b)

a water leak

c)

battery voltage too high

d)

vent hose kinked

97.

Low flow at all fixtures is MOST likely caused by:

a)

clogged aerator

b)

faulty city water connection

c)

clogged filter or strainer

d)

low propane pressure

98.

A freshwater pump that is very noisy may be due to:

a)

missing accumulator

b)

loose mounting

c)

clogged vent

d)

cracked tank

99.

Water pump rubber mounting feet help to:

a)

increase pressure

b)

decrease noise and vibration

c)

increase amperage

d)

hold water

100.

A broken water heater check valve will cause:

a)

spitting at faucets

b)

reduced water pressure

c)

leaks at the fill connection

d)

loss of hot water system pressure

101.

The purpose of a city water regulator is to:

a)

increase pressure

b)

reduce pressure to safe levels

c)

bypass the water pump

d)

close the vent valve

102.

What is the typical RV city water pressure range?

a)

80–90 PSI

b)

50–60 PSI

c)

30–40 PSI

d)

10–20 PSI

103.

Polyethylene tanks are repaired permanently using:

a)

ABS cement

b)

heat welding

c)

two-part epoxy

d)

silicone adhesive

104.

What material are most RV drain pipes made of?

a)

Copper

b)

Steel

c)

ABS Plastic

d)

CPVC

105.

The minimum slope required for RV drainage piping is:

a)

1/16 inch per foot

b)

1/8 inch per foot

c)

1/4 inch per foot

d)

1/2 inch per foot

106.

An ASTVD (anti-siphon trap vent device) is used to:

a)

replace a vent cap

b)

allow air into a drain system

c)

block odors from escaping

d)

create positive pressure

107.

True or False: Holding tanks must always be installed with baffles.

a)

True

b)

False

108.

To sanitize a freshwater system, how long must bleach solution sit?

a)

1 hour

b)

2 hours

c)

4 hours

d)

8 hours

109.

If the freshwater tank is 'burping' at the fill, the problem is likely:

a)

blocked vent line

b)

clogged fill line

c)

closed drain valve

d)

city water backflow

110.

Which type of faucet uses washers to seal the water flow?

a)

Compression faucet

b)

Washerless faucet

c)

Ball faucet

d)

Ceramic disc faucet

111.

Which fitting material requires solvent welding for drainage?

a)

PEX

b)

ABS

c)

Copper

d)

Polyethylene

112.

The term SWHT refers to:

a)

Small Water Holding Tank

b)

Solid Waste Holding Tank

c)

Sanitation Water Handling Tank

d)

Sewer Waste Handling Tube

113.

Gray water is collected from all EXCEPT:

a)

kitchen sink

b)

shower

c)

lavatory

d)

toilet

114.

The water strainer protects the pump from:

a)

vent line blockage

b)

debris in the water

c)

electrical shorts

d)

backflow pressure

115.

Which component prevents sewer odors from entering the RV?

a)

Check valve

b)

P-trap

c)

Hose clamp

d)

Pressure regulator

116.

When welding polyethylene tanks, the tool must include:

a)

cement brush

b)

air regulator

c)

propane torch

d)

sandpaper

117.

A flexible hose in an RV is commonly used where?

a)

Fresh water tank fill

b)

In slide-out rooms

c)

Roof vents

d)

Drain pipe riser

118.

Which clamp type is used on flexible hoses?

a)

Worm gear clamp

b)

Rivet clamp

c)

Heat shrink

d)

Bolt clamp

119.

Recirculating toilets in RVs require:

a)

continuous water supply

b)

12VDC power

c)

propane heating

d)

city water connection

120.

Best location to install a pressure gauge for testing:

a)

Drain valve

b)

Faucet outlet

c)

Pump discharge line

d)

Fill inlet

121.

What causes 'cycling' of the water pump when no faucet is open?

a)

Faulty fuse

b)

Water leak

c)

Pressure too high

d)

Vent line clogged

122.

How do you remove an Uponor clamp?

a)

Cut tubing

b)

Pull by hand

c)

Use clamp removal tool

d)

Rotate fitting

123.

What does DWV mean?

a)

distribution waste valve

b)

distribution water valve

c)

drain, waste, vent

d)

drain, water, ventilate

124.

Why is ABS piping used in the RV industry?

a)

it resists impact in cold temperature

b)

it can be easily identified because of its green color

c)

it holds up during travel conditions

d)

it is cheaper to install

125.

What sealant is most appropriate to use when assembling a city water test kit?

a)

thread

b)

acrylic resin

c)

butyl rubber

d)

epoxy

126.

When inspecting a freshwater system, make sure it functions properly on

a)

pump and city water hookup

b)

pump only

c)

city water hookup only

d)

external pump

127.

Which device is used to prevent backflow in a marine freshwater system?

a)

Pressure regulator

b)

Expansion tank

c)

Check valve

d)

Accumulator tank

128.

What is the recommended method to winterize a marine freshwater system?

a)

Disconnect the pump only

b)

Flush with saltwater

c)

Increase water pressure

d)

Drain all water and add antifreeze

129.

Oliver is setting up a new water system for his home. What is the purpose of an accumulator tank in this setup?

a)

maintain constant water pressure

b)

increase system pressure by 15 psi

c)

assist in winterization

d)

increase water capacity

130.

What is the purpose of sewer hoses?

a)

Drinking water

b)

Waste disposal

c)

Increasing water pressure

d)

Reducing water hardness

131.

What is the purpose of water pressure regulators?

a)

Increase water flow

b)

Prevent damage from high campground water pressure

c)

Enhance water taste

d)

Reduce water hardness

132.

What is the connection type for fresh water hoses?

a)

Bayonet fittings

b)

Cam-locks

c)

Standard garden hose thread (GHT) – 3/4" female fitting

d)

Elbows

133.

What does the pressure switch in the pump do when it detects a drop in pressure?

a)

It shuts off the pump.

b)

It increases the water temperature.

c)

It activates the pump.

d)

It decreases the water flow.

134.

What is the main function of faucets and fixtures in a pressurized water system?

a)

Deliver water to sinks, showers, etc.

b)

Store clean, potable water

c)

Heat water for dishwashing

d)

Filter impurities from water

135.

What is a key feature of aluminum tanks?

a)

UV-resistant

b)

Conductive

c)

Heavier

d)

Not corrosion-resistant

136.

What is used to prevent leaks in threaded fittings?

a)

Hose clamps

b)

Teflon tape

c)

Rubber seals

d)

Metal washers

137.

What materials are used for thru-hull fittings and seacocks?

a)

Plastic only

b)

Bronze or marine-grade plastic

c)

Steel

d)

Aluminum

138.

What is a characteristic of sanitation hoses?

a)

Non-toxic

b)

Heavy-duty and resistant to odor permeation

c)

Made of bronze

d)

Used for fuel lines

139.

What is the purpose of pump compatibility in water systems?

a)

To increase water hardness

b)

To integrate with 12V RV water pumps or marine freshwater pumps

c)

To enhance water taste

d)

To reduce water pressure

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