Book1 chapter 5

Question 1

The blowdown connection is made to the:
Select one:

A. Highest point of the boiler shell
B. Lowest point of the mud drum
C. Highest point of the mud drum
D. Highest point of the steam drum
E. Lowest point of the steam drum

Answer 1

B. Lowest point of the mud drum

Question 2

All fitting markings shall be legible and must indicate the following minimum requirements.
1. National Pipe Size
2. Manufacturer’s name or trade mark
3. Vendors Identification
4. Service designation
5. Material designation

Answer 2

2. Manufacturer’s name or trade mark
3. Service designation
4. Material designation

Question 3

The purpose of the gauge glass or water gauge is to show the _____ in the boiler.
Select one:

A. Color of the water
B. Temperature of the steam
C. Steam level
D. Water level
E. Pressure of the water

Answer 3

D. Water level

Question 4

A safety valve must be mounted:
1. In the horizontal position
2. To the boiler by a short nipple
3. At the highest practicable part of the boiler
4. With discharge water properly drained
5. With a valve next to the boiler

Answer 4

2. To the boiler by a short nipple
3. At the highest practicable part of the boiler
4. With discharge water properly drained

Question 5

Boiler fittings must comply with the requirements set out in the:
1. ASME Codes
2. ANSI Codes
3. CSA B51
4. CSA B52
5. The regulations of the authority having jurisdiction

Answer 5

1. ASME Codes
2. CSA B51
3. The regulations of the authority having jurisdiction

Question 6

The boiler vent valve is used for the purpose of allowing:
Select one:

A. Air to escape while filling
B. Air to escape while draining
C. Steam to enter while draining
D. Steam to escape while filling
E. Water to escape while filling

Answer 6

A. Air to escape while filling

Question 7

Try cocks are used on boilers to:
Select one:

A. Prove the temperature of the steam
B. Test for steam pressure
C. Check the boiler water level
D. Test the operation of the safety valve
E. Drain water from the water column

Answer 7

C. Check the boiler water level

Question 8

Gauge glass safety shutoff valves are equipped with a:
Select one:

A. Self closing stem
B. Flapper disc
C. Brass plug
D. Stainless steel ball
E. Floating disc

Answer 8

D. Stainless steel ball

Question 9

A pressure gauge can most accurately be calibrated by using:
Select one:

A. A test gauge comparator
B. Another pressure gauge
C. A dead weight tester
D. Hydraulic comparator
E. The Inspector’s test gauge

Answer 9

C. A dead weight tester

Question 10

A hydrostatic test is at a pressure of

Select one:

a. 1.5 times the operating pressure
b. 1.5 times the maximum allowable working pressure
c. 1.5 times the bursting pressure
d. 1.5 times atmospheric

Answer 10

b. 1.1.5 times the maximum allowable working pressure

Question 11

A heating boiler must have a permanently attached marker indicating:
Select one:

A. The maximum allowable working pressure
B. Highest permissible water level
C. Lowest permissible water level
D. The maximum allowable working temperature
E. Lowest permissible steam level

Answer 11

C. Lowest permissible water level

Question 12

All fittings not properly or clearly identified:
Select one:

A. Can be used in water applications
B. May be used for low pressure service
C. Can be used for compressed air service
D. Should be rejected
E. Should be kept for emergency use

Answer 12

D. Should be rejected

Question 13

If the steam passage to the boiler gauge glass becomes obstructed:
Select one:

A. The water level in the glass will fall
B. The water level in the glass will rise
C. There will be no change
D. The steam level in the glass will fall
E. The steam level in the glass will rise

Answer 13

B. The water level in the glass will rise

Question 14

Boiler gauge glass packing nuts may be tightened:
Select one:

A. Only hand tight
B. At any time
C. Once the pressure has been removed
D. Once the glass has cooled to room temperature
E. With a torque wrench

Answer 14

C. Once the pressure has been removed

Question 15

A pipe siphon is used on a boiler to:
Select one:

A. Maintain a water seal between the water and the Bourdon tube
B. Remove water from the boiler drum
C. Maintain a water seal between the steam and the Bourdon tube
D. Add water to the Bourdon tube
E. Maintain a steam seal between the steam and the Bourdon tube

Answer 15

C. Maintain a water seal between the steam and the Bourdon tube

Question 16

A valve commonly used as a boiler stop valve is the _____ valve.
Select one:

A. Plug
B. Needle
C. Butterfly
D. Ball
E. Gate

Answer 16

E. Gate

Question 17

The Inspector’s test gauge is used to:
Select one:

A. Measure the pressure on the boiler
B. Confirm the pressure shown on the boiler pressure gauge
C. Calibrate the pressure gauge on the boiler
D. Test the pressure on the boiler
E. Confirm that there is pressure on the boiler

Answer 17

B. Confirm the pressure shown on the boiler pressure gauge

Question 18

Before feedwater enters a boiler the feedwater pipe must be fitted with a:
Select one:

A. Stop valve between the check valve and the boiler
B. Ball valve between the check valve and the boiler
C. Check valve between the stop valve and the boiler
D. Gate valve between the check valve and the boiler
E. Globe valve between the check valve and the boiler

Answer 18

A. Stop valve between the check valve and the boiler

Question 19

Boiler gauge glasses will break while in service due to the:
Select one:

A. Safety lifting due to over pressure
B. Thinning of the glass by the action of the steam
C. Difference in temperature between the water and steam
D. Draft of hot air hitting the glass
E. Strain due to gauge fittings being in line

Answer 19

B. Thinning of the glass by the action of the steam

Question 20

When the pressure in the boiler approaches its _____, the safety valve will pop open and release the steam to atmosphere.
Select one:

A. Turbine inlet operating pressure
B. Normal process header steam pressure
C. Ultimate tensile strength
D. Maximum allowable working pressure
E. Normal steam drum operating pressure

Answer 20

D. Maximum allowable working pressure

Question 21

The blowdown tank is/does

Select one:

a. Does not empty into the sewer
b. Not cool the water
c. Does not allow the pressure to be reduced
d. Is not required on a low pressure boiler

Answer 21

d. Is not required on a low pressure boiler

Question 22

A check valve is used in the feedwater line to prevent:
Select one:

A. A reverse flow of water from the boiler
B. A reverse of water from the feedwater line
C. Air from entering the feedwater line
D. A reverse flow of steam from the boiler
E. Water hammer in the feedwater line

Answer 22

A. A reverse flow of water from the boiler

Question 23

Boiler fittings are:
Select one:

A. All pipe fittings used with boiler operation
B. Devices directly attached to any part of a boiler
C. Devices directly attached to the pressure part of a boiler
D. Valves and instruments in the boiler plant
E. Devices used for the safe operation of boiler plants

Answer 23

C. Devices directly attached to the pressure part of a boiler

Question 24

When installing a pressure gauge and siphon on a boiler it is important to:
Select one:

A. Slowly open the valve to fill the siphon with water
B. Allow the steam to condense in the siphon
C. Fill the siphon with instrument oil
D. Fill the siphon with water first
E. Slowly open the valve to fill the siphon with steam

Answer 24

D. Fill the siphon with water first

Question 25

In a pressure gauge the Bourdon tube is connected to the pointer via a/an: Select one: A. Wheel and axle B. Geared sector and pinion C. Differential gear D. Rack and pinion E. Pulley and cable

Answer 25

B. Geared sector and pinion

Question 26

The “popping” pressure of a safety valve may be increased by: Select one: A. Decreasing the spring pressure B. Increasing the spring pressure C. Lowering the adjusting ring D. Raising the lifting lever E. Raising the adjusting ring

Answer 26

B. Increasing the spring pressure

Question 27

Blowdown valves are installed to: 1. Remove any accumulation of sediment 2. Remove contaminated steam 3. Drain the boiler 4. Lower the concentration of dissolved impurities in the steam 5. Lower the concentration of dissolved impurities in the water

Answer 27

1. Remove any accumulation of sediment 3. Drain the boiler 5. Lower the concentration of dissolved impurities in the water

Question 28

The safety valve pop test can be carried out by: Select one: A. Reducing the pressure on the spring B. Lifting the try lever C. Lowering the try lever D. Slowly raising the boiler pressure E. Popping the valve with a hammer

Answer 28

D. Slowly raising the boiler pressure

Question 29

Quick closing gauge glass valves require _____ turn/s to close. Select one: A. 1 B. ¼ C. ½ D. 2 E. 3

Answer 29

B. ¼

Question 30

Quick closing gauge glass valves are operated by: Select one: A. Diaphragms B. Levers and chains C. Actuators D. Valve rods E. Solenoids

Answer 30

B. Levers and chains