Omaha 2nd grade engineers licenses

List five daily things you would check on a cooling tower?

How do you keep a cooling tower from freezing when not in service?

Describe a sling psychrometer and how to use it?

Define hygrometer

What are phosphates and chelants?

What is condensate polishing?

Name three types of corrosion in a cooling tower

Explain the operation of a zeolite water softener

What is a polisher?

What is a demineralizer?

What’s the lowest condensate pH should be?

What are amines, and name two types?

How is hardness in boiler water usually measured?

How does a Lithium Bromide system work?

How do you find a leak in a lithium bromide machine?

What are the advantages and disadvantages with lithium bromide?-

How do you determine the size of a receiver on an ammonia cooling unit for a large company?

What causes freeze back on an ammonia compressor?-

How do you test for leaks in an ammonia system?

How would you start a manually operated ammonia compressor?

How are gasses formed in an ammonia system?

How is the capacity of an ammonia compressor affected by the suction pressure, discharge pressure, and clearance?

What is Pak-Ice?

Explain the purpose of the accumulator and how it works

. In refrigeration what is the last thing you check before connecting your test gauges?

What types of compressors are used in a Freon system?

Who can make repairs on your refrigeration system?

What is a purger and where is it located on a refrigeration system?

Describe the operation of an 8 blade rotary compressor and be prepared to draw one.

How does an evaporator condenser work?

Regarding refrigerant EPA compliance regulations name five?

In regards to refrigeration what is superheat?

What damage can happen if a turbine is started to quickly?

Reaction turbines are especially suited for what steam conditions?

What’s a reaction turbine and what’s it used for?

Name and explain the auxiliary device necessary for start up on a DC motor.

What do you consider the most important step in the care and maintenance of a steam turbine?

What could cause a turbine to be noisy?

How is electricity produced in a generator?

What is the function of the dashpot? Where is it located?

What is power factor?

What is a 3 phase Y connected alternator?

What is a 3 phase alternator?

What is a diaphragm, and where is it located?

Define gland sealing steam.

What is the most economical vacuum on a turbine

What is considered a perfect vacuum?

What are the essential steps in putting on a cold boiler on line with other operating boilers?

When operating a boiler with a pressurized furnace, why is it important to regularly inspect the outer skin of the boiler?

. In what unit is draft measured by?

Name three types of oil burners?

How to operate soot blower on a manually operated water tube boiler?

What is thermal efficiency and what is ideal efficiency of most boilers.

What are two types of welds on boiler construction and repair?

Sketch a steam header valve arrangement. Draw boiler, non return valves with drains, then header

. Name two low water cutoffs tests and how often should you test them?

When should you bottom blow a boiler? What safety procedure must be followed when bottom blowing a boiler?

How is a steam gauge connected to a boiler? What are two requirements?

In the ASME code for boilers, what does stamp ‘A’ stand for?

Why is welding preferred over riveting on longitudinal?

Why are tube ends beaded over in a steam drum?

How do you do a dry boiler layup?-

What is return condensate percentage in feed water if the make up conductivity is 836 mho and the feed water is 172 mho, condensate conductivity is 60 mho?

How do you do a wet boiler layup?

How often should steam traps be tested for proper operation? And list six ways to test them.

Draw or explain connecting a safety valve.

What is an accumulation test and when is it needed?

What makes a safety valve pop?

Inverted bucket trap?

How often is it recommended to test your safety valves manually and how often under pressure?

What are some essential rules governing safety valves and their installation?

What is an aspirating pump

Is a centrifugal pump primed running or stopped? Why?

How does a centrifugal pump eliminate balance problems?

What is cavitation?

Name three things vacuum pump does for heating system?

What is meant by total head on a pump?

Name three merits of a metering pump.

The gauge on a pump discharge reads 125 psi, how high is the discharge pipe?

How high will the suction of a single stage centrifugal pump lift water?

What is the purpose of a shaft sleeve?

What are two types of vacuums pumps?

What will happen to the discharge pressure of a centrifugal pump if the discharge valve is closed completely?

How would you change the discharge pressure of a single stage centrifugal pump?

What are the requirements of a good motor?

manifold duplex water pumps?

What is meant by on-off, positioning and metering control?

how do you protect your motors from overloads?

dealing with water column piping waht is maximum and minimum diameter?

What are the advantages and disadvantages of injectors?

what is the right to know label?

fire safety plan?

how much oil can spill before you call the epa?

what is the epa?

the EPA requires waht records to be kept regarding underground fuel tanks?

How often do you check the rectifier on a fuel tank? who can check it? What do you check?

list three over fill precentions requird on a fuel oil tank

What spill protection is required on fuel tanks?

What is a confined space?

What are five basic methods used for protection of cross contamination of potable water?

What is an air ejector and what is it used for?

Where would you use a reduced pressure style back flow preventer?

Which way should a steam line slope and why?

What is a seat less plug blow down valve?

What are two problems if soot blowers discharge water?

What is the lining for inside a steel stack?

What is lagging? And how does it affect efficiency?

Describe an intercooler and after cooler on compressors?

Define wire drawing?

If an underground fuel tank has 5,000 gallons in it already and it is a 10,000 gallon tank, how much would you order and show your work.

tds

conductivity

list the six things printed on the badge of a boiler

If a boiler was erected on site what markings will be found on the tubes?

What is a slip ring motor used for?