Steam Boilers Tech Check 11 Flashcards
When taking over a shift, the boiler operator must first check————–
A, the boiler room log
B. the fuel oil supply
C. the water level on all boilers that are on the line by blowing down the water column and gauge glass
D, the bottom blowdown valves
C. the water level on all boilers that are on the line by blowing down the water column and gauge glass
The duties of a boiler operator taking over a shift are to——-
A. test the low water fuel cutoff control
B. inspect and check running auxiliaries for proper lubrication
C check the burner and the fire for correct flame, including the
fuel temperature and pressure
D. all of the above
D. all of the above
The low water fuel cutoff control can be tested——–
A. by blowing down the low water fuel cutoff or allowing the water level in the boiler to drop
B. with the burner in operation or when the bottom blowdown
C. valve is used sediment when the fuel valve is opened or when sludge and has to be removed
D. by an evaporation test or with the feedwater pump
A. by blowing down the low water fuel cutoff or allowing the water level in the boiler to drop
The operator in charge of a shift must maintain a boiler room log that indicates—————
A. system pressures
B. steam flow and water consumption
C. fuel consumption and the operation of auxiliary equipment
D. hourly readings of all pertinent steam plant data
D. hourly readings of all pertinent steam plant data
Regardless of the type of fuel being used, before lighting off a boiler during a cold start-up, the operator must first—————-
A. close all hand-operated outlet dampers
B. close all boiler main steam stop valves
C. check for the correct boiler water level
D. close all drains on the main steam lines and headers
C. check for the correct boiler water level
The purpose of a flamme failure control is to protect the boiler from———-
A. a possible boiler explosion
B. a possible furnace explosion
C, exceeding its MAWP
D. starting in low fire
B. a possible furnace explosion
After establishing the proper boiler water level, the burner may be lit————-
A. purging the steam and water drum
B. venting the drum condenser
C. purging the furnace
D. purging the superheater
C. purging the furnace
In order to prevent uneven expansion of the boiler on a cold startup the boiler must be—————-
A. brought up to full steam pressure as quickly as possible
B. thoroughly vented
C. heated using steam from outside sources
D. warmed up slowly
D. warmed up slowly
to the AsME code, the boiler vent should remain open a pressure of approximately psi--------- is on the boiler. A. 3 B. 8 C. 15 D.25.
A. 3
The automatic nonreturn valve on a boiler being cut in on a line should be opened when the steam pressure on the boiler reaches————–
A. the line pressure
B. 75% to 85% of the line pressure
C. 5 to 10 pounds above line pressure
D. 5 to 10 pounds below line pressure
B. 75% to 85% of the line pressure
good operating procedure to test the safety valve on an incoming boiler by hand—————-
A. after the boiler is cut in on the line
B. when the boiler reaches 50 psi
C. before the boiler is cut in on the line
D. before the boiler burner is lit
C. before the boiler is cut in on the line
The free-blowing drain between the boiler’s boiler is cut valve and the main steam stop valve should be——- the boiler is cut in on the line
A. closed as soon as
B. closed before
C. opened as soon as
D. closed just before
A. closed as soon as
When cutting a boiler in on a line equipped with two hand-operated steam stop valves, the steam pressure on the boiler should be————- line pressure.
A. slightly higher than
B. equal to
C. slightly lower than
D. at any pressure above 75% of
C. slightly lower than
Boilers equipped with a superheater must be protected during warm-up by—————
A. keeping the superheater drain valve closed until the boiler is cut in on the line
B. keeping the superheater drain valve open until the boiler is cut in on the line
C, passing the feedwater through the Ruperheater tubes
D, bypassing the superheater tubes
B. keeping the superheater drain valve open until the boiler is cut in on the line
Superheaters are prevented from overheating by the circulation of———-
A. air
B, steam
C. water
D. gases of combustion
B, steam
To ensure high heat transfer rates,——— should be removed from boiler heating surfaces.
A. flue gas
B, condensate
C carbon dioxide
D. soot
D. soot
When the steam pressure in the boiler has dropped to 2 psi or 3 psi, the————— should be opened.
A. safety valve
B. free blowing drain
C, boiler vent
D, bottom blowdown valve
C, boiler vent
As the boiler is cooling down, the boiler operator must maintain the————-
A. NOWL
B. normal draft condition
C. normal feedwater temperature
D. 10% CO2 reading
A. NOWL
To prepare a boiler for inspection, the boiler must be———–
A. leaned only on the fire side
B. cleaned only on the water side
C. cleaned on both the fire and water sides
D. inspected before being eleaned
C. cleaned on both the fire and water sides
After a boiler has had major repair work made on its steam or water side or has developed a low water condition, it should be subjected to———-
A. an accumulation test
B. a hydrostatic test
C. an evaporation test
D. both an accumulation and a hydrostatic test
B. a hydrostatic test
Flame failure controls use a————-
A. thermodynamic trap
B. flame scanner
C. blowdown valve
D. surge tank
B. flame scanner
Boilers that are out of service for an extended period of time can be———–
A. stored with the NOWL
B. filled with oxygen
C. filled with con
D. layed up either wet or dry
D. layed up either wet or dry
If there is a danger of the boiler freezing, the boiler should be layed up————
A. with a light fire
B. by using steam from the header to keep the boiler warm
C. completely dry
D by using antifreeze
C. completely dry
Plant emergency procedures should be established by the————-
A. operator on duty
B. insurance inspector
C. ASME code
D.chief engineer
D.chief engineer
The whistle valve, which is located in the boiler water column,———-
A, secures the burner in the event of high water
B. secures the burner in the event of low water
C. warns the operator of high or low water
D is not found on steam boilers
C. warns the operator of high or low water
A low water fuel cutoff—————
A. shuts the boiler down
B. shuts off the fuel supply
C. adds water to the boiler
D. purges the boiler firebox
B. shuts off the fuel supply
A boiler that has experienced a low water condition should be
A thoroughly examined for signs of overheating
B. thoroughly examined for scale buildup
C. brought up to full steam pressure to test for leaks
D. brought up to the NowL
A thoroughly examined for signs of overheating
A high water level condition in the boiler can be corrected by using————-blowdown.
A. continuous
B. surface
C. bottom
D. waterwall
C. bottom
If a boiler that was on-line is down because of low steam pressure, the cause is———–
A. a stuck automatic nonreturn valve
B. either a flame failure or a low water condition
C. a low water condition only
D. a flame failure only
B. either a flame failure or a low water condition
a hydrostatie test, the pressure on the boiler should
be increased to———–
A. 1 ½ times the safety valve setting
B. 2 times the safety valve setting
C. 6% above the MAWP
D. 2 times the working pressure
A. 1 ½ times the safety valve setting
A furnace explosion can be caused by————–
A. excess draft
B. a low water condition
C. an overheated furnace
D. an accumulation of combustible gases
D. an accumulation of combustible gases
ASME code recommends that boilers be inspected internally and externally every—————-
A. six months
B. year
C. two years
D. three years
B. year
Maintenance work performed inside a boiler requires a(n) that contains procedures to prevent possible injury from hazards.
A. accident report,
B. boiler log
C. spector notice
D. confined space permit
D. confined space permit
When someone finds an unsafe condition in a plant, that person should report it to———
A. the shop steward
B. the immediate superior
C. the insurance inspector
D. the plant personnel department
B. the immediate superior
Preventive maintenance of boiler room equipment can
A. extend the life of the equipment
B. increase overall plant efficiency
C. reduce downtime
D. all of the above
D. all of the above
New or retubed boilers should be cleaned with———-
A. an alkaline detergent solution
B. a degreasing agent
C, a high pressure water hose
D. a steam lance
A. an alkaline detergent solution
The primary purpose of establishing a set of plant safety rules is to————–
A increase plant efficiency
B. protect workers and equipment
C. comply with government regulations
D. increase employment opportunities for safety engineers
B. protect workers and equipment
Reporting accidents is the responsibility of the———-
A plant engineer
B. safety engineer
C. person involved
D. insurance inspector
C. person involved
The three ingredients needed to start a fire are
and
A. fuel; heat; co,
B. fuel; combustible material: CO
C. fuel; heat; nitrogen
D. fuel; heat; oxygen
D. fuel; heat; oxygen
A fire caused by oil, gas, grease, or paint would be classified as a Class———– fire.
A. A
B. B
C. C
D. D
B. B
Locations where painting or dipping is performed are examples of a(n)———– hazard area.
A. light
B. moderate
C. ordinary
D. extras
D. extras
The low water fuel cutoff control should be blown down
A. once a shift
B. weekly
C. monthly
D. during manual inspection
A. once a shift
