Which of the following extends the life of equipment?

Preventative Maintenance

Which of the following is an example of PM?

Scheduled Service

Exercising water systems valves is an example of which type of maintenance?

Preventative Maintenance

How often should a plant exercise the valves in its system?

At least once a year

Which type of gate valve do you bury?

Non-Rising Stem

Which of the following is the most common type of valve used in water systems?

Gate Valves

Which of the following valves is used to control the rate of flow?

Globe Valve (Also, Butterfly, Eccentric, and Plug)

Which of the following valves is used to start or stop flows?

Gate Valve

Using a gate valve to control flow may cause what problem?

Undue Seat Wear

Opening and closing a valve rapidly will cause?

Water Hammer

What does it take to fully open a plug, eccentric or butterfly valve?

One Quarter Turn (1/4)

Which of the following pumps is most often used for delivering chemicals?

Positive Displacement

Which of the following pumps is widely used in water systems?

Centrifugal Pump

How do you keep a centrifugal pump primed?

Install a Foot or Check Valve

What is the recommended maximum suction lift?

15'

The formation and collapse of a gas pocket or air bubbles on the blade of an impeller or gate valve is called?

Cavitation

The sound of marbles in a pump is called?

Cavitation

Loud noises in a pump that sound like someone is hitting the impeller with a hammer are called?

Cavitation

What is the purpose of the lantern ring?

Water Seal

The seal water pressure should be?

Five (5) PSI higher than pump discharge PSI

What is Brinelling?

A type of bearing failure

What is a multi-stage pump?

Pump with more than one (1) impeller

What do you call a metal plate that is on equipment and lists critical operating criteria for the equipment?

Nameplate

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

Misalignment of the couplings

What tool do you use to align the couplings?

Dial Indicator; Caliper

When an impeller is running backwards, what action must you take?

Switch any two leads

What is the purpose of a wear ring?

Plug Internal Leakage

Where is the wear ring located?

Between the impeller and the casing

Before working on a motor, what must you do?

Lockout and Tag

How do you install packing for a pump?

One strip at a time and staggered

When suitable for the process, mechanical seals are preferred over packing
because?

Less labor intensive

When should you adjust the packing of a pump?

When the pump is running

When half the mechanical seal is bad, what must you do?

Replace the whole seal

How do you replace a mechanical seal?

You must take the whole pump apart

Before starting a pump that has mechanical seals, what must you verify?

Make sure the seal is submersed in water

Which of the following is not a reason for a motor failure?

Pump not connected to motor

Besides a plant logbook, what other record must be kept?

Maintenance Record

What is the purpose of a limit switch?

Limits the travel of a chain or belt

What is the purpose of a shear pin?

Protect equipment from damage - Breaks/gives before damage can occur.

At the end of a suction or in-take line there is generally a?

Screen to prevent debris from getting in

When should you lubricate a pump?

The horizontal section of a suction pipe should?

Slope upward to the pump

What is the purpose of sloping the pipe upward?

Prevent air pockets

Seventy-five percent (75%) of centrifugal pump problems can be attributed to?

Suction Side

Suction piping should be a minimum of one size ________ than the pump suction/inlet nozzle.

Larger

Pumps should be operated at or near their __________ ?

Rated Heads

What is the most common reason for a pump's failure to deliver at its rated
capacity?

Air Leak

What causes the most damage to an impeller?

Air

Never operate a positive displacement pump against a?

Closed discharge valve

When lubricating a bearing, you must first?

Open the drain plug from the bearing housing

Changing and flushing oil on equipment should be performed according to manufacturer's specs and?

At least every 600 hours/3 months

What is the first thing you should do when working on equipment that you aren't familiar with?

Read Manufacturer's manual and/or call manufacturer

When a plant process has more than one pump, how you should operate the pumps?

Alternately

Before starting a pump for the first time, you should?

Lubricate it

Which of the following is a daily maintenance task for an air compressor?

Drain the air receiver (tank)

What is the major difference in the modern gate valves and the older styles?

Ans. You can repair them in place
Ans. Modern gate valves can control flows

What is used to measure current?

Ampere

What term is used to measure resistance?

Ohms