Book 1: 2-05 - "Basic Fittings for Steam Boilers"

Question 1

Pressure gauges may loose their accuracy due to:
Select one:

A. Excessive vibration

B. All of the above

C. Steam entering the Bourdon tube

D. Metal fatigue

E. Wear and tear

Answer 1

B. All of the above

Question 2

In a pressure gauge the Bourdon tube is connected to the pointer via a/an:
Select one:

A. Wheel and axle

B. Rack and pinion

C. Differential gear

D. Geared sector and pinion

E. Pulley and cable

Answer 2

D. Geared sector and pinion

Question 3

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

A. Globe valve between the check valve and the boiler

B. Stop valve between the check valve and the boiler

C. Ball valve between the check valve and the boiler

D. Gate valve between the check valve and the boiler

E. Check valve between the stop valve and the boiler

Answer 3

B. Stop valve between the check valve and the boiler

Question 4

The blowdown of a safety valve may be decreased by:
Select one:

A. Raising the lifting lever

B. Decreasing the spring pressure

C. Raising the adjusting ring

D. Increasing the spring pressure

E. Lowering the adjusting ring

Answer 4

E. Lowering the adjusting ring

Question 5

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

A. Flapper disc

B. Brass plug

C. Floating disc

D. Self closing stem

E. Stainless steel ball

Answer 5

E. Stainless steel ball

Question 6

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

A. There will be no change

B. The water level in the glass will fall

C. The steam level in the glass will fall

D. The steam level in the glass will rise

E. The water level in the glass will rise

Answer 6

E. The water level in the glass will rise

Question 7

All fittings not properly or clearly identified:
Select one:

A. Should be kept for emergency use

B. Should be rejected

C. Can be used in water applications

D. Can be used for compressed air service

E. May be used for low pressure service

Answer 7

B. Should be rejected

Question 8

The blowdown tank:

Select one:

A. Does not cool the water

B. Does not empty into the sewer

C. Is not required on a low pressure boiler

D. Does not allow the pressure to be reduced

Answer 8

C. Is not required on a low pressure boiler

Question 9

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
Select one:

A. 2, 4, 5

B. 2, 3, 4

C. 1, 3, 5

D. 3, 4, 5

E. 1, 2, 3

Answer 9

C. 1, 3, 5

Question 10

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
Select one:

A. 1, 2, 3

B. 2, 3, 4

C. 2, 4, 5

D. 3, 4, 5

E. 1, 3, 5

Answer 10

B. 2, 3, 4

Question 11

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

A. Highest permissible water level

B. Lowest permissible steam level

C. The maximum allowable working pressure

D. The maximum allowable working temperature

E. Lowest permissible water level

Answer 11

E. Lowest permissible water level

Question 12

The blowdown connection is made to the:
Select one:

A. Highest point of the steam drum

B. Highest point of the boiler shell

C. Lowest point of the mud drum

D. Highest point of the mud drum

E. Lowest point of the steam drum

Answer 12

C. Lowest point of the mud drum

Question 13

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

A. Color of the water

B. Pressure of the water

C. Steam level

D. Water level

E. Temperature of the steam

Answer 13

D. Water level

Question 14

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

A. Needle

B. Plug

C. Ball

D. Gate

E. Butterfly

Answer 14

D. Gate

Question 15

A Bourdon tube is in the shape of:
Select one:

A. The letter “C”

B. The letter “C” and oval in cross section

C. An oval in the cross section

D. A bellows

E. A diaphragm

Answer 15

B. The letter “C” and oval in cross section

Question 16

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

A. Maximum allowable working pressure

B. Ultimate tensile strength

C. Normal steam drum operating pressure

D. Normal process header steam pressure

E. Turbine inlet operating pressure

Answer 16

A. Maximum allowable working pressure

Question 17

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

A. Difference in temperature between the water and steam

B. Safety lifting due to over pressure

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

D. Strain due to gauge fittings being in line

E. Draft of hot air hitting the glass

Answer 17

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

Question 18

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

A. Air to escape while draining

B. Steam to enter while draining

C. Steam to escape while filling

D. Air to escape while filling

E. Water to escape while filling

Answer 18

D. Air to escape while filling

Question 19

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
Select one:

A. 3, 4, 5

B. 1, 3, 5

C. 1, 2, 3

D. 2, 3, 4

E. 2, 4, 5

Answer 19

E. 2, 4, 5

Question 20

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
Select one:

A. 2, 3, 5

B. 3, 4, 5

C. 2, 3, 4

D. 1, 2, 3

E. 1, 3, 5

Answer 20

E. 1, 3, 5

Question 21

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

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

B. Remove water from the boiler drum

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

D. Maintain a steam seal between the steam and the Bourdon tube

E. Add water to the Bourdon tube

Answer 21

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

Question 22

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

A. Only hand tight

B. With a torque wrench

C. At any time

D. Once the glass has cooled to room temperature

E. Once the pressure has been removed

Answer 22

E. Once the pressure has been removed

Question 23

A hydrostatic test is at a pressure of

Select one:

A. 1.5 times the operating pressure

B. 1.5 times atmospheric

C. 1.5 times the bursting pressure

D. 1.5 times the maximum allowable working pressure

Answer 23

D. 1.5 times the maximum allowable working pressure

Question 24

When the pressure inside the Bourdon tube increases the tube will tend to:
Select one:

A. Straighten showing lower pressure

B. Curve more showing lower pressure

C. Become more oval showing higher pressure

D. Curve more showing higher pressure

E. Straighten showing higher pressure

Answer 24

E. Straighten showing higher pressure

Question 25

When the main steam stop valves of heating boilers are over 51 mm (2 in.) it is recommended that _____ be used.
Select one:

A. Diaphragm operated valves

B. Solenoid operated valves

C. Gate valves

D. Globe valves

E. OS & Y valves with rising spindles

Answer 25

E. OS & Y valves with rising spindles

Question 26

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

A. A test gauge comparator

B. Hydraulic comparator

C. Another pressure gauge

D. A dead weight tester

E. The Inspector’s test gauge

Answer 26

D. A dead weight tester

Question 27

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

A. Test the pressure on the boiler

B. Calibrate the pressure gauge on the boiler

C. Confirm the pressure shown on the boiler pressure gauge

D. Measure the pressure on the boiler

E. Confirm that there is pressure on the boiler

Answer 27

C. Confirm the pressure shown on the boiler pressure gauge

Question 28

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. Slowly open the valve to fill the siphon with steam

C. Allow the steam to condense in the siphon

D. Fill the siphon with instrument oil

E. Fill the siphon with water first

Answer 28

E. Fill the siphon with water first

Question 29

Quick closing gauge glass valves require _____ turn/s to close.
Select one:

A. ½

B. 3

C. 2

D. 1

E. ¼

Answer 29

E. ¼

Question 30

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

A. A reverse of water from the feedwater line

B. Air from entering the feedwater line

C. A reverse flow of steam from the boiler

D. Water hammer in the feedwater line

E. A reverse flow of water from the boiler

Answer 30

E. A reverse flow of water from the boiler

Question 31

The “popping” pressure of a safety valve may be increased by:
Select one:

A. Decreasing the spring pressure

B. Raising the lifting lever

C. Increasing the spring pressure

D. Lowering the adjusting ring

E. Raising the adjusting ring

Answer 31

C. Increasing the spring pressure

Question 32

The procedure for testing a directly connected gauge glass would be.
1. Close the gauge water valve
2. Open the gauge water valve
3. Close the gauge steam valve
4. Open the gauge steam valve
5. Close the gauge drain valve
6. Open the gauge drain valve
7. Proving steam passage is clear
8. Proving water passage is clear
Select one:

A. 1, 6, 7, 3, 2, 8, 5

B. 1, 6, 7, 2, 8, 3

C. 3, 6, 8, 3, 7, 5

D. 3, 6, 8, 4, 1, 7, 2

E. 1, 6, 7, 3, 8, 5

Answer 32

A. 1, 6, 7, 3, 2, 8, 5

Question 33

Quick closing gauge glass valves are operated by:
Select one:

A. Solenoids

B. Levers and chains

C. Actuators

D. Valve rods

E. Diaphragms

Answer 33

B. Levers and chains

Question 34

The safety valve pop test can be carried out by:
Select one:

A. Slowly raising the boiler pressure

B. Lowering the try lever

C. Popping the valve with a hammer

D. Lifting the try lever

E. Reducing the pressure on the spring

Answer 34

A. Slowly raising the boiler pressure

Question 35

Try cocks are used on boilers to:

A. Drain water from the water column

B. Prove the temperature of the steam

C. Test the operation of the safety valve

D. Check the boiler water level

E. Test for steam pressure

Answer 35

D. Check the boiler water level