Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

3A2 > 3A2, Chapter 02 > Flashcards

3A2, Chapter 02 Flashcards

1
Q

Calculate the minimum required wall thickness of a superheater tube. The tube is 40mm O.D. And is connected to a header by strength welding. The maximum allowable working pressure is 2000 kPa gauge and the average tube temperature is 212 degrees C. The tube material is alloy steel with specification SA-213-T11

A) 1.0 mm
B) 0.25 mm
C) 0.5846 mm
D) 0.7546 mm

A

C) 0.5846 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Calculate the minimum required wall thickness of a superheater tube. The tube is 100 mm O.D. And is connected to a header by strength welding. The maximum allowable working pressure is 2430 kPa gauge and the average tube temperature is 375 degrees C. The tube material is alloy steel with specification SA-192

A) 5.025 mm
B) 1.58 mm
C) 3.258 mm
D) 2.014 mm

A

D) 2.014 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Calculate the maximum allowable working pressure, in kPa, for a water tube Boiler tube, which is 73.5 mm O.D. And has a minimum wall thickness of 4.71 mm. The tube is strength welded into place in the Boiler and is located in the furnace area of the Boiler. Tube material is carbon steel, SA-192, with a mean wall temperature of 380 degrees C

A) 8.52 Mpa
B) 9.921 Mpa
C) 10 Mpa
D) 22 Mpa

A

B) 9.921 Mpa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Calculate the minimum required wall thickness of a Boiler tube which is strength welded to a header. The maximum allowable working pressure is 4450 kPa, and the mean wall temperature is 370 degrees C. The tube material is SA-192 and the outside diameter is 50 mm

A) 3.14 mm
B) 1.62 cm
C) 1.62 mm
D) 3.26 cm

A

C) 1.62 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Calculate the maximum allowable working pressure, in kPa, for a water tube Boiler tube, which is 76 mm O.D. And has a minimum wall thickness of 3.25 mm. The tube is strength welded into place in the Boiler and is located in the furnace area of the Boiler. Tube material is carbon steel, SA-192, with a mean wall temperature of 375 degrees C

A) 6.2 Mpa
B) 7.5 Mpa
C) 5.2 Mpa
D) 9.0 Mpa

A

A) 6.2 Mpa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Calculate the minimum required wall thickness of a superheater tube. The tube is 76 mm O.D. And is connected to a header by strength welding. The maximum allowable working pressure is 4150 kPa gauge and the average tube temperature is 400 degrees C. The tube material is alloy steel with specifications SA-213-T11

A) 2.125 mm
B) 1.88 mm
C) 1.5 mm
D) 1.0 mm

A

B) 1.88 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Calculate the minim m required plate thickness of a welded Boiler drum having an inside radius of 935 mm and a maximum design working pressure of 9020 kPa. The plate material is SA-516 grade 70 and metal temperature does not exceed 320 degrees C. Weld reinforcement on the longitudinal joints has been removed flush with the surface of the plate

A) 72.96 mm
B) 55 mm
C) 62.96 mm
D) 83.55 mm

A

72.96 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Calculate the minimum thickness required for a welded steel pipe of material SA-209 grade T1b, plain end. The outside diameter of the pipe is 273.05 mm and the operating pressure and temperature are 2000 kPa and 400 degrees C, respectively

A) 0.304 mm
B) 3.04 mm
C) 2.68 mm
D) 2.68 cm

A

B) 3.04 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A steam header between the Boiler and first stop valve is to be fabricated of 152.4 mm O.D. Pipe. The material specification is SA-369 FPA seamless pipe. The operating pressure will be 8440 kPa at 420 degrees C. The pipe will be joined by full penetration welds and will be fully radiographed. Calculate the minimum thickness of the pipe wall if the manufacturer’s tolerance is 12.5%

A) 12.04 mm
B) 15 mm
C) 25.36 mm
D) 10.90 mm

A

D) 10.90 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A Boiler drum is made of SA-515-70 steel and has a ligament efficiency of 0.66. If the steam temperature is 280 degrees C and the inside diameter of the drum is 1.6 m and the thickness of the drum is 68.45 mm. What will the maximum operating pressure be, in kPa?

A) 2500 kPa
B) 6500 kPa
C) 7500 kPa
D) 5200 kPa

A

B) 6500 kPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Calculate the required minimum thickness (in mm) of steam piping which will carry steam at a pressure of 4300 kPa gauge and a temperature of 370 degrees C. The piping is plain end, 273.05 O.D. The material is low alloy steel, SA-335 P11. A manufacturer’s tolerance of 12.5% must be added to the pipe

A) 5.61 mm + tolerance = 6.31 mm
B) 6.51 mm + tolerance = 7.21 mm
C) 8.55 mm + tolerance = 9.55 mm
D) 5.00 mm + tolerance = 6.00 mm

A

A) 5.61 mm + tolerance = 6.31 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Calculate the minimum thickness required for a seamless steel feedwater pipe of material SA-209, grade T1. The outside diameter of the pipe is 323.85 mm and the operating pressure and temperature are 5200 kPa and 500 degrees C respectively. The pipe is plain ended. Assume that the material is austenitic steel

A) 12.66 mm
B) 15.85 mm
C) 9.95 mm
D) 11.85 mm

A

D) 11.85 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Calculate the required thickness, in mm, of a superheater outlet header, operating at 500 degrees C and having a maximum allowable working pressure of 17 MPa. The header material is SA-335-P7 and the outside diameter is 457.2 mm

A) 54.35 mm
B) 45.23 mm
C) 22.14 mm
D) 3.26 mm

A

A) 54.35 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Calculate the maximum allowable working pressure for a welded drum if the plates are 25 mm thick and of material SA-299. The inside diameter of the drum is 988 mm and the joint efficiency is 100%. Ass,e the steam temperature will not exceed 400 degrees C

A) 6.035 MPa
B) 5.305 Mpa
C) 4.0 MPa
D) 7.225 MPa

A

B) 5.305 Mpa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Calculate the thickness of a seamless, unstated dished head with pressure on the concave side, having a flanged in manhole 280 mm by 380 mm. The head has a diameter of 1235 mm and is a segment of a sphere with a dish radius of 1016 mm. The maximum allowable working pressure is 1380 kPa, the material is SA-285 C and the metal temperature does not exceed 204 degrees C

A) 18.37 mm
B) 22 mm
C) 38 mm
D) 17.63 mm

A

A) 18.37 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Calculate the thickness of a seamless, blank unstated dished head having pressure on the concave side. The head has a diameter of 1067 mm and is a segment of a sphere with a dish radius of 915 mm. The maximum allowable working pressure is 2068 kPa and the material is SA-285 A. The metal temperature does not exceed 250 degrees C

A) 25.27 mm
B) 30.55 mm
C) 19.33 mm
D) 35.33 mm

A

A) 25.27 mm

17
Q

Calculate the thickness required for a dished seamless head, which is attached to a Boiler having a shell diameter of 1200 mm. The head has a flanged in manhole with one dimension equal to 150 mm. The head is a segment of a sphere with a dished radius of 1120 mm. The head material is SA-285 Grade C, the maximum allowable working pressure is 1930 kPa and the steam temperature does not exceed 260 degrees C

A) 25 mm
B) 35 mm
C) 20.033 mm
D) 23.7 mm

A

D) 23.7 mm

18
Q

Calculate the thickness of a seamless blank unstated dished head having pressure on the concave side. The head has a diameter of 830 mm and is a segment of a sphere with a dish radius of 615 mm. The maximum allowable working pressure is 1650 kPa, the material is SA-299 and the metal temperature does not exceed 200 degrees C

A) 8.77 mm
B) 10.25 mm
C) 5.22 mm
D) 15 mm

A

A) 8.77 mm

19
Q

Calculate the minimum required thickness, in mm, for a blank, unstayed, full hemispherical head, with the pressure on the concave side. The head is fabricated from seamless material and is double butt welded to the shell. All reinforcement is removed and fully radiographed. The radius to which the head is dished is 700 mm, maximum allowable working pressure is 4000 kPa, and the head material (SA-285 C) will not reach a temperature greater than 340 degrees C. Use code 29.11

A) 30.79 cm
B) 14.8 mm
C) 30.16 mm
D) 14.8 cm

A

B) 14.8 mm

20
Q

A seamless, welded, full hemispherical head is welded to a Boiler shell that has an inside diameter of 1100 mm. Maximum working pressure is 3500 kPa, the material is SA-226, and operating temperature is 300 degrees C. The head has a flanged in manhole that meets code requirements. Calculate the minimum required thickness for the head

A) 45.55 mm
B) 60.55 mm
C) 22 mm
D) 52.87 mm

A

A) 45.55 mm

21
Q

Calculate the minimum required thickness for an unstated full hemispherical head with the pressure on the concave side of the head has the following specifications:

1) inside diameter = 1.0 m
2) pressure = 1500 kPa
3) temperature = 285 degrees C
4) plate specification is SA-285 C

The head is fabricated from seamless material and is double butt welded to the shell. All weld reinforcement is removed and has a flanged in manhole that complies with code

A) 22 mm
B) 38.45 mm
C) 16.15 mm
D) 28.59 mm

A

C) 16.15 mm

22
Q

What is the minimum required thickness for a blank, full hemispherical head. The material of construction is SA-515-65, operating temperature is 425 degrees C, pressure is 1800 kPa, and the head is dished to a radius of 870 mm?

A) 8.81 mm
B) 9.81 cm
C) 6.32 cm
D) 9.81 mm

A

D) 9.81 mm

23
Q

With reference to the code a stoker fired firetube Boiler has 62 meters square of heating surface. How much steam must the safety valve on this Boiler be capable of discharging per hour?

A) 1587 kg/h
B) 2815 kg/h
C) 2108 kg/h
D) 3269 kg/h

A

C) 2108 kg/h

24
Q

Utilizing the code a water tube Boiler is gas fired and has 65 meters square of Boiler heating surface, plus 85 meters square of water wall surface. What is the minimum required relieving capacity for all the safety valves?

A) 9815 kg/h
B) 12000 kg/h
C) 14500 kg/h
D) 10000 kg/h

A

A) 9815 kg/h

25
Q

Utilizing the code a water tube Boiler, equipped with a superheater, has two safety valves on the steam drum and one safety valve on the superheater. The Boiler is fired on pulverized coal and has 70 meters square of boiler surface, 95 meters square of water wall surface, and 20 meters square of superheater surface. What is the minimum combined relieving capacity permitted for the steam drum safety valves?

A) 9000 kg/h
B) 7500 kg/h
C) 6900 kg/h
D) 8130 kg/h

A

D) 8130 kg/h

26
Q

Utilizing the code a stoker fired firetube Boiler has 100 meters square of heating surface. How much steam must the safety valve on this Boiler be capable of discharging per hour?

A) 3400 kg/h
B) 2850 kg/h
C) 2500 kg/h
D) 5500 kg/h

A

A) 3400 kg/h

27
Q

Utilizing the code a water tube Boiler is gas fired and has 50 meters square of Boiler heating surface, plus 70 meters square of water wall surface. What is the minimum required relieving capacity for all the safety valves?

A) 5452 kg/h
B) 6500 kg/h
C) 9800 kg/h
D) 7910 kg/h

A

D) 7910 kg/h

3A2 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions