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Water Treatment Plant Operator Test Questions > Maintenance > Flashcards

Maintenance Flashcards

1
Q

Which of the following pumps is most commonly used in water systems?

A

Centrifugal

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2
Q

What is a multi-stage pump?

A

Has more than one impeller

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3
Q

When a pump shaft is running in reverse, what action must be taken?

A

Switch any two power leads

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4
Q

When is the packing of a pump adjusted?

A

When pump is running?

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5
Q

What is used to keep a centrifugal pump Primed ?

A

Foot/check valve

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6
Q

What is the chief cause for a pump’s failure to deliver at its rated capacity?

A

Air leak

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7
Q

What is the most common cause of vibration between pump and impeller?

A

Misalignment of couplings

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8
Q

What is purpose of wear rings?

A

Plug internal leakage

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9
Q

What is purpose of lantern rings?

A

Water seal

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10
Q

How do you align the couplings between the pump and the motor?

A

Dial indicator

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11
Q

The seal water pressure for a pump should be?

A

5 psi higher than pump discharge PSI

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12
Q

What is the purpose of seal water?

A

Block air intake/ lubricate packing

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13
Q

What type of pump is commonly used to deliver chemicals?

A

Diaphragm

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14
Q

When should a pump be lubricated?

A

Before initial startup/ according to manufacturer recommendations/ every 600 hours or every 3 months according to usage

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15
Q

How do you install packing on a pump?

A

One strip at a time and staggered

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16
Q

What gate valve has compaction threads in its bonnet?

A

Rising stem

17
Q

What is meant by” fixing “samples?

A

Adding a preservative

18
Q

Specified conductance is an indirect measurement of

A

TDS

19
Q

Why should a soda ash extinguisher not be used on an electrical fire?

A

Harmful gases will be produced

20
Q

Before starting up a new chlorinator system, what action is needed?

A

Read manufacturers, o&m manual

21
Q

Florida administrative code FAC requires samples that are combined by flow. Proportioning must be taken?

A

Hourly

Water Treatment Plant Operator Test Questions (16 decks)

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