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1. UT Basic/ Advanced > UTB14 Utilities Equipment and Maintenance > Flashcards

UTB14 Utilities Equipment and Maintenance Flashcards

1
Q

What is the first thing you should do before installing an industrial food grinder?

A

Read the entire installation manual.

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2
Q

What is the function of the impeller in a food grinder?

A

Pulverize the garbage

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3
Q

What diameter waste pipe is needed when installing an industrial sink?

A

2-inch

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4
Q

What is the proper procedure for dislodging something stuck in the impeller?

A

Use a broom stick

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5
Q

What are steam kettles commonly called?

A

Coppers

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6
Q

What is the temperature tolerance of a steam table thermostat?

A

± 5° F

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7
Q

How do you ensure the safe and efficient operation of a range?

A

Observe a PM schedule.

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8
Q

How often should preventative maintenance be performed on the M-59 Field Range?

A

250 hours

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9
Q

What is the maximum time interval allowed before pumping out a grease trap?

A

3 months

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10
Q

What standard is used for all work concerning emergency eye/face wash equipment?

A

ANSI Z358.1

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11
Q

What is sufficient water flow in gallons per minute from a fire hydrant for firefighting?

A

250 GPM

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12
Q

Why are dry hydrants preferable over wet hydrants in cold weather?

A

They will not freeze

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13
Q

Why is a breakaway flange used in the construction of a fire hydrant?

A

To fracture should large stresses be applied to the hydrant

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14
Q

(True or False) A traffic model fire hydrant is used near traffic because it is smaller than a standard fire hydrant.

A

Flase

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15
Q

In which manual are the criteria for fire hydrant locations found?

A

MIL-HDBK-1008

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16
Q

(True or False) Fire hydrants should be located at least 50 feet from a building but never closer than 25 feet.

A

True

17
Q

What is the most common error made when installing a new fire hydrant?

A

Improper surface grading

18
Q

What is the minimum distance any utility or equipment should be placed by a fire hydrant?

A

3 feet

19
Q

(True or False) Utlitiesmen should only be concerned with hydrostatic testing of fire hydrants.

A

True

20
Q

What is the minimum water pressure from a fire hydrant required for safe firefighting?

A

20 psi

21
Q

When performing hydrostatic testing, what is the recommended testing medium under pressure?

A

H20

22
Q

What is the definition of backflow?

A

Flow of unintended liquids into the potable water supply

23
Q

What is the most common form of backflow?

A

Back-siphonage

24
Q

How is back-siphonage caused?

A

Negative pressure upstream

25
Q

What are the classes of water hazards?

A

Pollutant
Health hazard
Lethal hazard

26
Q

Which backflow device is the only acceptable means of protecting against lethal hazards?

A

Air gap

27
Q

What are the hydraulic considerations when installing a backflow preventer?

A

sizing
pressure
temperature

28
Q 
Which is NOT a type of volumetric dry feeder?
A. Disk
B. Screw
C. Belt
D. Turbine
A

D. Turbine

29
Q

What part of the regeneration unit should be cleaned thoroughly every 6 months?

A

The brine measuring tank

30
Q

Baffled mixing basins require cleaning at what regular frequency?

A

Semiannually

31
Q

What intervals should you check the paddle rotation on flocculator basins to ensure all flocculators are working properly?

A

Monthly

32
Q

What part(s) of a flocculator basin should be checked for silt penetration?

A

The underwater bearings

33
Q

Cathodic protection fights corrosion in what manner?

A

Current flows from the dc source through the soil or water to the metal to be protected.

34
Q

How often should wash water troughs be inspected for corrosion?

A

6 month intervals

Semiannually

35
Q

Most diatomite filter installations in potable water supply plants are of what type?

A

Pressure

36
Q

A 30-percent solution of hydrochloric acid should be used to clean porous plate diffusers clogged with_____.

A

Iron oxide particles

1. UT Basic/ Advanced (25 decks)

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