Chapter 5 Basic Fitting for Steam Boilers

Question 1

1. The types of construction used with packaged boilers are:
2. “A”
3. “B”
4. “C”
5. “D”
6. “O”

A. 1, 2, 3 
B. 2, 3, 5 
C. 3, 4, 5 
D. 1, 3, 5 
E. 1, 4, 5

Answer 1

E. 1, 4, 5

Question 2

2. Water circulation in the longitudinal drum boiler is created by: 
A. The water circulation pump. 
B. Higher density feedwater 
C. Higher density boiler water 
D. Lower density boiler water 
E. Direction of feedwater supply

Answer 2

B. Higher “density feedwater”

Question 3

3. The boilers or modules in a multiple heating boiler plant are:

A. Most typically connected in series between the supply and return header

B. Most typically connected in parallel after the supply header

C. Most typically connected in parallel between the supply and return header

D. Most typically connected in parallel before the return header

E. Fired by a common burner control system

Answer 3

C. Most typically connected in “parallel between” the supply and return header

Question 4

4. An advantage of a multiple heating boiler plant is:

A. That they have a large water capacity

B. The boilers are heavy requiring special foundations

C. That with a small water content a pressure part failure will cause more damage

D. They are light requiring a minimal foundation

E. Most low capacity can be moved through standard sized doorways

Answer 4

E. Most low capacity can be moved through standard sized doorways

Question 5

5.The boilers in multiple boiler heating plants are operated:

A. In sequence by a step controller

B. Individually by separate controllers

C. By the outdoor temperature

D. By temperature controller

E. Manually as required

Answer 5

A. In sequence by a step controller

Question 6

6. Blowdown valves are installed to:
7. Remove any accumulation of sediment
8. Remove contaminated steam
9. Drain the boiler
10. Lower the concentration of dissolved impurities in the steam
11. Lower the concentration of dissolved impurities in the water

A. 1, 2, 3 
B. 2, 3, 5 
C. 3, 4, 5 
D. 1, 3, 5 
E. 2, 4, 5

Answer 6

D. 1, 3, 5

Question 7

7. A safety valve must be mounted:
8. In the horizontal position
9. To the boiler by a short nipple
10. At the highest practicable part of the boiler
11. With discharge water properly drained
12. With a valve next to the boiler

A. 1, 2, 3 
B. 2, 3, 4 
C. 3, 4, 5 
D. 1, 3, 5 
E. 2, 4, 5

Answer 7

B. 2, 3, 4

Question 8

8. A pressure gauge can most accurately be calibrated by using:

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

Answer 8

B. A dead weight tester

Question 9

9. A check valve is used in the feedwater line to prevent:

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

Answer 9

C. A reverse flow of water from the boiler

Question 10

10. Quick closing gauge glass valves are operated by:

A. Valve rods 
B. Actuators 
C. Solenoids 
D. Diaphragms 
E. Levers and chains

Answer 10

E. Levers and chains

Question 11

11. Before feedwater enters a boiler the feedwater pipe must be fitted with a:

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

Answer 11

B. Stop valve between the check valve and the boiler

Question 12

12. The “popping” pressure of a safety valve may be increased by:

A. Rising the adjusting ring 
B. Lowering the adjusting ring 
C. Increasing the spring pressure
D. Decreasing the spring pressure 
E. Raising the lifting lever

Answer 12

C. Increasing the spring pressure

Question 13

13. A Bourdon tube is in the shape of:

A. An oval in the cross section 
B. The letter “C” 
C. A bellows 
D. The letter “C” and oval in cross section 
E. A diaphragm

Answer 13

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

Question 14

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

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

Answer 14

B. Maximum allowable working pressure

Question 15

15. Try cocks are used on boilers to:

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

Answer 15

E. Check the boiler water level

Question 16

16. Boiler gauge glass packing nuts may be tightened:

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

Answer 16

B. Once the pressure has been removed

Question 17

17. Boiler fittings must comply with the requirements set out in the:
18. ASME Codes
19. ANSI Codes
20. CSA B51
21. CSA B52
22. The regulations of the authority having jurisdiction
    A. 1, 2, 3
    B. 2, 3, 4
    C. 3, 4, 5
    D. 1, 3, 5
    E. 2, 3, 5

Answer 17

D. 1, 3, 5

Question 18

18. All fittings not properly or clearly identified:
    A. May be used for low pressure service
    B. Can be used in water applications
    C. Can be used for compressed air service
    D. Should be kept for emergency use
    E. Should be rejected

Answer 18

E. Should be rejected

Question 19

19. The boiler "vent valve" is used for the purpose of allowing:
A.	Steam to escape while filling
B.	Air to escape while draining
C.	Water to escape while filling
D.	Steam to enter while draining
E.	Air to escape while filling

Answer 19

E. Air to escape while filling

Question 20

20. Gauge glass safety shutoff valves are equipped with a:
A.	Floating disc
B.	Flapper disc
C.	Stainless steel ball
D.	Brass plug
E.	Self closing stem

Answer 20

B. Flapper disc

Question 21

Answer Chapter 5
 Basic Fitting for Steam Boilers
1.	E
2.	B
3.	C
4.	E
5.	A
6.	D
7.	B
8.	B
9.	C
10.	E
11.	B
12.	C
13.	D
14.	B
15.	E
16.	B
17.	D
18.	E
19.	E
20.	C