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Boiler Review
Boiler Lincense
| Question | Answer |
|---|---|
| For the purpose of rating boiler horsepower for an Engineer License only, how many square feet of heating 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 water or other liquid boiler in which the pressure does not exceed 160 psig or a temperature of 250F. |
| A person holding a current state of Minnesota Special Engineer License could be in charge of? | High and Low pressure boilers not to exceed a total of 30 Boiler Horsepower |
| A Special Engineer could be a shift engineer in a plant of not more than? | 100 Boiler horsepower |
| A Special Engineer may serve as an apprentice in what size water or other liquid or steam or other vapor boiler? | In any plant regardless of size under the direct supervision of the properly licensed engineer |
| The purpose of the low water cut out on a steam or hot water boiler is to? | Shut off the burner when a low water condition exists |
| The valve of valves that must relieve all excess pressure on a steam or hot water boiler are_________. | Safety valve and/or an A.S.M.E approved safety relief valve |
| A Tri indicator could be found on ________. | A hot water boiler |
| A Tri indicator would inform the boiler operator of _______________. | 1) Temperature of the water 2) Pressure of the water in PSIG 3) Altitude of the water in feet |
| What is the destructive force in a steam or hot water boiler explosion? | The instant release of energy stored in the water as heat |
| An A.S.M.E approved Safety Relief Valve used on a hot water boiler is tested at the factory on ________________. | Hot water only |
| Tri Cocks or gauge cocks are used on a steam boiler to indicate? | The true water level inside the boiler |
| On a steam or hot water boiler, the safety valve or safety relieve valve could be tested by? | By lifting the lever on the valve or raising the pressure until they operate |
| Before starting a steam or hot water boiler you should check for? | Water in the boiler |
| Safety valves or Safety Relief valves should be manually tested at least? | Monthly |
| Th Low water cut out is one of the most important electrical/mechanical devices on your boiler. Test it? | Weekly |
| What device must be located between a hot water boiler and the expansion tank? | A shut off valve so the expansion tank can be isolated and drained during operation of the boiler.= |
| On a hot water boiler, every time the burner operates the Safety Relief Valve opens. | The expansion tank is logged or the isolating valve for the expansion tank is closed |
| An aquastat is used on a___________. | Hot water boiler |
| On a steam boiler the control named the operator (pressure control) will ___________? | On pressure decrease=Start;on pressure increase=Stop |
| On a hot water boiler, the control called the operator (aquastat) will? | On temperature decrease=start the boiler. On temperature increase=stop the boiler |
| On a steam boiler, what is a siphon or pit tail used for? | To protect the steam gauge from too high of a temperature (live steam) |
| What is one reason that could cause the expansion tank to fill with water? | Air leaks out by the gauge glass fittings |
| What would you do if you came into the boiler room and found no water in the boiler, regardless if it's steam or hot water boiler? | Shut off the burner and allow the boiler to cool |
| The most dangerous action the boiler operator can take when a dangerously low water condition exists is? | Add water to the boiler |
| What is the purpose of the bottom blow down on a steam boiler? | To remove sludge and sediment, to drain the boiler, and control chemicals |
| What is the maximum boiler horsepower you may take charge of on a chief engineer's license? | Unlimited horsepower |
| With a 1st class engineer's license you may take charge of a steam boiler plant not to exceed | 300 boiler horsepower |
| If you were to fail a special engineer exam, how long must you wait before you would be allowed to take the test again? | 10 days |
| What should be displayed in the boiler room? | Engineer's license, exemption or inspection certificates, and boiler log book |
| A 2nd class engineer may take complete charge of a steam boiler plant not to exceed? | 100 boiler horsepower |
| When determining what engineer's license will be needed, the total horsepower connected to the common steam header is used! | True |
| In a steam plant where there are two 150 boiler horsepower connected to the same common steam header, what engineer's license would be required to be in charge of this plant? | 1st class engineer |
| To whom would you report a boiler condition you thought not safe? | Boiler inspector |
| What grade of license must the shift operator have where a chief engineer has charge of a plant of 300 boiler horsepower? | 2nd class |
| When filling and draining a boiler you should? | Open the boiler vent/air cock |
| Before the main gas valve will open the ________? | Pilot light must be confirmed |
| When starting or shutting down a boiler you should? | Have it on low fire |
| If the gauge glass brakes you? | Can run the boiler using the Tri Cocks |
| Under normal conditions the water in the gauge glass should move a little, if it does not move you should? | Check to see if a valve is closed or plugged |
| How often should a boiler be inspected? | Once a year |
| Who is responsible to a have the boiler inspected? | The owner and The engineer |
| What is required of a boiler inspector | Must have a Minnesota chief "A" license and pass a national Boiler Board exam |
| What type of valve is the safety valve? | Spring Loaded |
| What does the low water cut off do? | Shuts off the burner when a low water condition exists |
| When testing the low water cut off, you should? | Have the boiler turned on and the burner firing |
| What is the most common reason for boiler explosions? | Not venting and purging before re-lighting the boiler |
| What is the first thing you do when you enter the boiler room? | Check the water level |
| What is the most important valve on the boiler? | Safety valve |
| What is minimum age requirement to get a special engineer's license | 16 years old |
| On the hot water boiler, the expansion tank is used to | Allow for expansion and contraction of the water volume as the temperature varies |
| How many questions are on the special exam, and what is the minimum passing score | 50 questions, 80% correct |
Created by:
toolegit