4th Class Power Engineering Unit B4: Boiler Plant Operation and Management Exam 2025 Questions and Answers

4th Class Power Engineering Unit B4: Boiler
Plant Operation and Management Exam 2025
Questions and Answers


If a new boiler is not properly boiled out, it may result in:

Select one:

a. furnace explosion

b. tubes rupturing

c. a foaming condition occurring


d. nuisance shut down - CORRECT ANSWER✔️✔️-c


An opening from a mechanical room where combustion equipment is housed that provides the

fresh air required for satisfactory combustion of a fuel is the:

Select one:

a. combustion air opening

b. windbox

c. blower


d. damper - CORRECT ANSWER✔️✔️-a


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,A boiler inspection:

Select one:

a. must be done before the boiler is ready for start-up

b. must be done before closing up and filling the boiler

c. must be done every two years


d. must be done after every shutdown of a boiler - CORRECT ANSWER✔️✔️-b


A tour of the power plant or power plant system to discover adverse conditions prior to starting the

plant or plant systems is known as a:

Select one:

a. shake down

b. take down

c. write down


d. walk down - CORRECT ANSWER✔️✔️-d


In preparation for a steam boiler start up, check that the boiler control switch on the panel is

_________, and the high-low firing rate control is set to _________:

Select one:

a. on / low

b. on / high

c. off / low


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,d. off / high - CORRECT ANSWER✔️✔️-c


This is the name given to a trial exercise to check that the equipment operates correctly prior to

placing the equipment on-line:

Select one:

a. tri run

b. pre run

c. test run


d. dry run - CORRECT ANSWER✔️✔️-d


While preparing to start any type of boiler plant, some of the auxiliaries that must be proven

operational are:

Select one:

a. feedwater supply, fuel supply, combustion air

b. burner operation, boiler doors, fan ducting enclosure

c. feedwater supply, fuel supply, forced draft fan, operator's certificate d. log book, operator's

certificate, boiler inspection certificate - CORRECT ANSWER✔️✔️-a


Pre-start checks of a fuel oil system should include a:

Select one:

a. walk down of the oil storage and delivery system

b. visual inspection of the lubrication system for the fans bearings



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, c. visual inspection of the piping welds


d. check to ensure that pre-treatment equipment is in service - CORRECT ANSWER✔️✔️-a


The step of a burner start sequence during which products of combustion or combustible gases are

cleared form the furnace, prior to burner ignition:

Select one:

a. pre-purge

b. post-purge

c. pilot-purge


d. system-purge - CORRECT ANSWER✔️✔️-a


Prior to starting a steam boiler ensure:

Select one:

a. fuel is available to the pilot and main burner

b. feedwater pump valves are closed

c. water is available to the deaerator


d. steam traps are closed - CORRECT ANSWER✔️✔️-a


Small spills and leaks must be:

Select one:

a. identified with proper placards




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