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Guide for Piping inspectors

Quiz Piping inspectors

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/ 10

Quiz

1/10
Determine the MAWP of the following piping system , at the next inspection, based on the following Design pressure/temperature Pipe description Outside diameter of pipe, D Thickness determined from Inspection Observed Corrosion Rate Next planned inspection 100 psig/100°F NPS 2, Sch.80, A 106 B 2.375” 0.190” 0.03 inches/year 5 Years MAWP:
Select the answer
1 correct answer
A.
674 psig
B.
323 psig
C.
125 psig
D.
Metal loss exceeds the requirements for 5 year inspection interval

Quiz

2/10
What is the pressure design thickness of NPS 10, A516 Gr.65 Type 22 pipe that operate at 1200 psig/750°F
Select the answer
1 correct answer
A.
0.432”
B.
0.46”
C.
0.928”
D.
Not enough information given

Quiz

3/10
A leak test is an alternative to inspection of buried piping. What is the minimum liquid pressure to adequately conduct this test?
Select the answer
1 correct answer
A.
1 1/2 times the MAWP
B.
1 1/4 times the MAWP
C.
10% greater than MAWP
D.
Actual MAWP

Quiz

4/10
For a single wall material thickness, over 0.375” through 0.50”, what is the hole type designation for a source side penetrameter
Select the answer
1 correct answer
A.
15
B.
17
C.
20
D.
25

Quiz

5/10
Give the corresponding “P” number for SA 414 Gr.A material
Select the answer
1 correct answer
A.
1
B.
2
C.
3
D.
11B

Quiz

6/10
On a class 1500 NPS 4 blind flange, what is the minimum thickness permitted?
Select the answer
1 correct answer
A.
1.12”
B.
1.88”
C.
2.12”
D.
2.88”

Quiz

7/10
For 1 1/4” thick carbon steel, what is the recommended preheat temperature?
Select the answer
1 correct answer
A.
300°F
B.
235°F
C.
175°F
D.
None

Quiz

8/10
Determine the MAWP of the following piping system , at the next inspection, based on the following Design pressure/temperature Pipe description Outside diameter of pipe, D Thickness determined from Inspection Observed Corrosion Rate Next planned inspection 100 psig/100°F NPS 20, Sch. std, A 106 B 20” 0.280” 0.02 inches/year 5 Years MAWP=
Select the answer
1 correct answer
A.
160 psig
B.
550 psig
C.
723 psig
D.
125 psig

Quiz

9/10
What is the inspection interval for buried piping without cathodic protection, the soil resistivity is 6,500 ohm-cm?
Select the answer
1 correct answer
A.
10 years
B.
15 years
C.
5 years
D.
whenever a leak is suspected

Quiz

10/10
What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions piping system?
Select the answer
1 correct answer
A.
>TW X 3
B.
≤TW / 3
C.
≥12T
D.
3/23”
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  • Quiz name:Piping inspectors
  • Total number of questions:150
  • Number of questions for the test:50
  • Pass score:80%

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