Steam Boilers Tech Check 11

Question 1

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

Answer 1

C. the water level on all boilers that are on the line by blowing down the water column and gauge glass

Question 2

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

Answer 2

D. all of the above

Question 3

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

Answer 3

A. by blowing down the low water fuel cutoff or allowing the water level in the boiler to drop

Question 4

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

Answer 4

D. hourly readings of all pertinent steam plant data

Question 5

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

Answer 5

C. check for the correct boiler water level

Question 6

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

Answer 6

B. a possible furnace explosion

Question 7

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

Answer 7

C. purging the furnace

Question 8

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

Answer 8

D. warmed up slowly

Question 9

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.

Answer 9

A. 3

Question 10

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

Answer 10

B. 75% to 85% of the line pressure

Question 11

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

Answer 11

C. before the boiler is cut in on the line

Question 12

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

Answer 12

A. closed as soon as

Question 13

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

Answer 13

C. slightly lower than

Question 14

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

Answer 14

B. keeping the superheater drain valve open until the boiler is cut in on the line

Question 15

Superheaters are prevented from overheating by the circulation of———-

A. air
B, steam
C. water
D. gases of combustion

Answer 15

B, steam

Question 16

To ensure high heat transfer rates,——— should be removed from boiler heating surfaces.

A. flue gas
B, condensate
C carbon dioxide
D. soot

Answer 16

D. soot

Question 17

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

Answer 17

C, boiler vent

Question 18

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

Answer 18

A. NOWL

Question 19

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

Answer 19

C. cleaned on both the fire and water sides

Question 20

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

Answer 20

B. a hydrostatic test

Question 21

Flame failure controls use a————-

A. thermodynamic trap
B. flame scanner
C. blowdown valve
D. surge tank

Answer 21

B. flame scanner

Question 22

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

Answer 22

D. layed up either wet or dry

Question 23

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

Answer 23

C. completely dry

Question 24

Plant emergency procedures should be established by the————-

A. operator on duty
B. insurance inspector
C. ASME code
D.chief engineer

Answer 24

D.chief engineer

Question 25

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

Answer 25

C. warns the operator of high or low water

Question 26

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

Answer 26

B. shuts off the fuel supply

Question 27

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

Answer 27

A thoroughly examined for signs of overheating

Question 28

A high water level condition in the boiler can be corrected by using————-blowdown.

A. continuous
B. surface
C. bottom
D. waterwall

Answer 28

C. bottom

Question 29

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

Answer 29

B. either a flame failure or a low water condition

Question 30

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

Answer 30

A. 1 ½ times the safety valve setting

Question 31

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

Answer 31

D. an accumulation of combustible gases

Question 32

ASME code recommends that boilers be inspected internally and externally every—————-

A. six months
B. year
C. two years
D. three years

Answer 32

B. year

Question 33

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

Answer 33

D. confined space permit

Question 34

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

Answer 34

B. the immediate superior

Question 35

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

Answer 35

D. all of the above

Question 36

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

Answer 36

A. an alkaline detergent solution

Question 37

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

Answer 37

B. protect workers and equipment

Question 38

Reporting accidents is the responsibility of the———-

A plant engineer
B. safety engineer
C. person involved
D. insurance inspector

Answer 38

C. person involved

Question 39

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

Answer 39

D. fuel; heat; oxygen

Question 40

A fire caused by oil, gas, grease, or paint would be classified as a Class———– fire.

A. A
B. B
C. C
D. D

Answer 40

B. B

Question 41

Locations where painting or dipping is performed are examples of a(n)———– hazard area.

A. light
B. moderate
C. ordinary
D. extras

Answer 41

D. extras

Question 42

The low water fuel cutoff control should be blown down

A. once a shift
B. weekly
C. monthly
D. during manual inspection

Answer 42

A. once a shift