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second half Book 1 > Book1 chapter 5 > Flashcards

Book1 chapter 5 Flashcards

Chapter 5 Chapter Review - Basic Fittings for Steam Boilers

1
Q

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

A

B. Lowest point of the mud drum

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2
Q

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

A
  1. Manufacturer’s name or trade mark
  2. Service designation
  3. Material designation
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3
Q

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

A

D. Water level

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4
Q

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

A
  1. To the boiler by a short nipple
  2. At the highest practicable part of the boiler
  3. With discharge water properly drained
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5
Q

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

A
  1. ASME Codes
  2. CSA B51
  3. The regulations of the authority having jurisdiction
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6
Q

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

A

A. Air to escape while filling

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7
Q

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

A

C. Check the boiler water level

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8
Q

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

A

D. Stainless steel ball

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9
Q

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

A

C. A dead weight tester

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10
Q

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

A

b. 1.1.5 times the maximum allowable working pressure

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11
Q

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

A

C. Lowest permissible water level

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12
Q

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

A

D. Should be rejected

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13
Q

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

A

B. The water level in the glass will rise

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14
Q

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

A

C. Once the pressure has been removed

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15
Q

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

A

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

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16
Q

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

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

A

E. Gate

17
Q

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

A

B. Confirm the pressure shown on the boiler pressure gauge

18
Q

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

A

A. Stop valve between the check valve and the boiler

19
Q

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

A

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

20
Q

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

A

D. Maximum allowable working pressure

21
Q

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

A

d. Is not required on a low pressure boiler

22
Q

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

A

A. A reverse flow of water from the boiler

23
Q

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

A

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

24
Q

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

A

D. Fill the siphon with water first

25
Q

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

A

B. Geared sector and pinion

26
Q

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

A

B. Increasing the spring pressure

27
Q

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

A
  1. Remove any accumulation of sediment
  2. Drain the boiler
  3. Lower the concentration of dissolved impurities in the water
28
Q

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

A

D. Slowly raising the boiler pressure

29
Q

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

A. 1
B. ¼
C. ½
D. 2
E. 3

A

B. ¼

30
Q

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

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

A

B. Levers and chains

second half Book 1 (11 decks)

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