Questions and Answers
For the purpose of rating boiler horsepower for an Engineer's License only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler?
10 Sq.Ft. Heating Surface
What is meant by the term 'Low Pressure Boiler'?
Boilers operating at a steam or other vapor pressure of 15 psig or less, or a hot water or other liquid boiler in which the pressure does not exceed 160 psig or a temperature of 250 degrees F.
A person holding a current State of Minnesota Special Engineer's License could be in charge of, or a shift engineer in what size plant(s)?
High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a shift engineer in a 100 horsepower plant.
Special Engineer may serve as an apprentice of what size water/liquid or steam/vapor boiler?
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The purpose of low water cut out on a steam or hot water boiler is to what?
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The valve or valves that must relieve all excess pressure on a steam or hot water boiler are what?
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A Tri indicator could be found on a:
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A tri indicator would inform the boiler operator of what?
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What is the destructive force in a steam or hot water boiler explosion?
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An ASME approved safety relieve valve used on a hot water boiler is tested at the factory on what?
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Some of the things you could find on a steam boiler (or hot water boiler) are what?
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What devices would only be found on a steam boiler?
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An expansion tank or compression tank would be used in what?
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What is the purpose of the expansion tank?
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On a hot water boiler, what is the purpose of the vent valve?
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If the safety valve or ASME safety relief valve leaks you would do what?
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Tri cocks or gauge cocks are used on a steam boiler to indicate?
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On a steam or hot water boiler, the safety valve or safety relief valve could be tested by?
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Before starting a steam or hot water boiler you should check for what?
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Bottom blow down valves are used for both steam and hot water.
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Safety valves or safety relief valves should be manually tested at least...?
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The low water cut out is one of the most important electrical/mechanical devices on your boiler. How often should you test it?
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What device must be located between a hot water boiler and the expansion tank?
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On a hot water boiler, every time the burner operates the safety relief valve opens. Why?
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An Aquastat is used on a...?
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To reduce thermal shock on hot water boilers, what devices are used?
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On a steam boiler the control named operator will...
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On a hot water boiler the control called the operator will...
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On a steam boiler what is a siphon or pigtail used for?
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What is one reason causing the expansion tank to fill with water?
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What would you do if you came into a boiler room and found no water in the boiler?
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What is the purpose of the bottom blow down on a steam boiler?
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When blowing down the water column the water should do what?
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When doing the annual boiler inspection the boiler should...
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Purging is part of what cycle?
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All steam traps will prevent steam from passing through them but will allow what to pass through them?
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How do we know if we are using an approved safety valve for a steam boiler or a safety relief valve for a hot water boiler?
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Before testing a low water fuel cut-out what must be done?
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Heat can be transferred in how many ways?
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Aquastats work by sensing:
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Name the different ways heat can be transferred and give a definition of each way.
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How many types of boilers are there?
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What type of boiler can be made larger?
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What type of boiler has the water surrounding the tubes?
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What type of boiler has the water running through the tubes?
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Boiler room log books are a state of Minnesota requirement for every boiler room, what are some of the things you should be writing down in the book?
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What is condensate?
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A firing cycle consists of events that safely control the burning of a fuel. What event occurs first?
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After blowing down the water column and gauge glass you are looking for the:
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Give an example of a cold water start for a hot water boiler.
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Two low water fuel cut-outs are required when the BTU input of the burner exceeds:
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A boiler equipped with two low water fuel cut-outs must have _______________ on the secondary low water fuel cut-out.
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A boiler with a new burner OR a new boiler room must have:
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The low water fuel cut off should be tested:
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What is the purpose of a check valve used in a feed water line going to a steam boiler?
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Where would you expect to locate a pyrometer?
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What would the pyrometer tell you?
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An aqua stat would be used on what type of boiler?
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Globe valves are used when you need to:
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Three types of drafts are:
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Study Notes
Boiler Horsepower and Ratings
- One boiler horsepower is equivalent to 10 square feet of heating surface.
- Low pressure boilers operate at 15 psi or less in steam/vapor, and hot water up to 160 psi or 250°F.
Special Engineer Licensure
- A Minnesota Special Engineers License permits oversight of high and low pressure boilers up to 50 boiler horsepower or 100 horsepower in plants.
- Special Engineers can apprentice on any size water or steam boiler under a licensed engineer.
Boiler Safety and Operations
- Low water cut-offs shut off the burner during low water conditions.
- Safety valves relieve excess pressure in steam or hot water boilers.
- Tri indicators on hot water boilers show temperature, pressure (in PSIG), and altitude (in feet).
- The destructive force in boiler explosions stems from sudden energy release from heated water.
Boiler Components and Functionality
- Expansion and compression tanks accommodate water volume changes in hot water boilers.
- Safety relief valves must be tested monthly and the low water cut-off daily.
- Bottom blow down valves apply to both steam and hot water systems, used to remove sediments.
- Tri cocks indicate the true water level inside boilers.
Boiler Maintenance Procedures
- Check for water in the boiler before startup and ensure the safety valve operates correctly.
- Test the low water fuel cut-out when the burner is on.
- Annual inspections should involve cleaning and checking inspection ports on the boiler.
Types of Boilers and Heat Transfer
- Three boiler types: Fire tube (water around tubes), Water tube (water through tubes), Cast iron sectional (can be enlarged).
- Heat transfer occurs via radiation, conduction, and convection.
Boiler Room Requirements
- Keep a log book documenting daily activities: date, actions taken, and signature.
- Condensate refers to condensed steam, collected for reuse.
- A "kill switch" is required for new burner or boiler room setups.
Control Equipment and Safety Features
- Aqua stats function on hot water boilers to monitor temperature.
- Pyrometers measure exhaust gas temperature and are placed in exhaust trails.
- Check valves prevent backflow in feedwater lines to steam boilers.
Draft Systems
- There are three types of drafts in boilers: Natural, Forced, and Induced, used to control airflow.
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Description
Test your knowledge about boiler horsepower, safety regulations, and operational guidelines. This quiz covers the essential components of boilers and the importance of maintaining safety standards. Explore topics including low pressure operations and special engineer licensure in Minnesota.