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14 Cards in this Set
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When shutting down a boiler for internal cleaning, you should: 1) Allow it to cool, then drain, open up, and flush 2) Shut down the boiler, then fill the boiler completely with chemically treated water 3) Shut off fire, drain, open up, and flush 4) Shut off fire and flush with cold water to cool it down 5) Let it stand for a couple of days, then drain |
1) Allow it to cool, then drain, open up, and flush |
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A boiler inspection: 1) Must be done when boiler inspector requests it 2) Must be done every two years 3) Must be done after every shut-down of the boiler 4) Is done with the owner’s permission 5) Must be done before the boiler is ready for start-up |
1) Must be done when boiler inspector requests it |
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When draining a cooled down steam boiler, it is always best to first: 1) Open the feedwater valve 2) Open a vent 3) Keep the air out of the gauge 4) Close all vents until the boiler is drained 5) Make sure the feedwater and fuel valves are closed |
2) Open a vent |
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On boiler cool-down, the vent should be opened: 1) Any time after the NRV is closed 2) As soon as the post-purge is completed 3) At no time 4) When all temperatures are at ambient value 5) Just before the unit goes into a vacuum |
5) Just before the unit goes into a vacuum |
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The first duty of the operator coming on shift is to: 1) Check the chemical tank levels 2) Check water column and gauge glass connections are clear 3) Check the safety valve settings 4) Talk to his/her supervisor 5) Fill out the log book |
2) Check water column and gauge glass connections are clear |
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Two boilers are feeding into the same steam header and each pressure gauge shows a pressure of 350 kPa. The steam pressure gauge on the header will indicate: 1) 700 kPa 2) Slightly less than 350 kPa 3) Slightly more than 700 kPa 4) Slightly less than 700 kPa 5) Slightly more than 350 kPa |
2) Slightly less than 350 kPa |
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Superheater vents are usually opened before firing a boiler to: 1) Verify the operation of the steam flow transmitter 2) Enhance boiler water circulation 3) Let the first steam produced act as a superheater coolant 4) Allow the superheater to warm up quicker 5) Ensure drum level does not drop |
3) Let the first steam produced act as a superheater coolant |
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Before removing a boiler from service for maintenance purposes, it is beneficial to: 1) Force cool the unit with post-purge air 2) Do as little as possible with the waterside of the unit 3) Drain the unit before the water cools to ambient temperature 4) Inform the chief inspector 5) Use soot blowers and clean the fireside well |
5) Use soot blowers and clean the fireside well |
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If a new boiler is not properly boiled out, it may result in: 1) A furnace explosion 2) An unwanted high rate of water circulation 3) Tubes rupturing 4) A foaming condition occurring 5) Nuisance shutdowns |
4) A foaming condition occurring |
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While a boiler is warming up, it is good practice to: 1) Leave all drain valves closed 2) Test the safety valve before any pressure develops 3) Go through a sootblowing operation sequence 4) Not interfere in any way with the combustion process 5) Check the low water fuel cut-off device for proper operation |
5) Check the low water fuel cut-off device for proper operation |
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When shutting down a boiler for internal cleaning, you should: 1) Shut off fire, drain, open up, and flush 2) Allow it to cool, then drain, open up, and flush 3) Let it stand for a couple of days, then drain 4) Shut off fire and flush with cold water to cool it down 5) Shut down the boiler, then fill the boiler completely with chemically treated water |
2) Allow it to cool, then drain, open up, and flush |
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Boiling out of boilers: 1) Is to post heat the boiler after it is shut down 2) Is done with an acid solution 3) Must be done with treated water only 4) Is done with an alkaline solution 5) Must be done every year |
4) Is done with an alkaline solution |
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Before starting up any boiler, it is necessary that: 1) The waterside is boiled out 2) It be properly warmed up 3) It have a valid inspection certificate 4) The water supply system be in service 5) It be properly purged |
3) It have a valid inspection certificate |
