Api 570 Practise Exam Questions 3b4i1o
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API 570 PRACTICE EXAM This is the “Open Book” portion of the exam. Feel free to use any of the following API Standard 570 Piping inspector code API Recommended practice 574 ASME Sec.V, Sec.IX ASME B 16.5 Pipe flanges & Flanged fittings ASME B 31.3 Process Piping 1.
Determine the MAWP of the following piping system, at the next inspection, based on the following Design pressure/temperature
100 psig/100°F
Pipe description
NPS 2, Sch.80, A 106-B
Outside diameter of pipe, D
2.375 in.
Thickness determined from Inspection
0.190 in.
Observed Corrosion Rate
0.03 inches/year
Next planned inspection
5 Years
MAWP= ____________________ A. B. C. D.
674 psig 323 psig 125 psig Metal loss exceeds the requirements for 5 year inspection interval
Section/page _____________________ Reference Publication__________________ 2.
What is the pressure design thickness of NPS 10, A516 Gr.65 Type-22 pipe that operates at 1200 psig at 750°F A. B. C. D.
0.432” 0.46” 0.928” Not enough information given
Section/page _____________________ Reference Publication__________________
API 510 Practice exam
Mohan Raj
Page 1 of 7
3.
A leak test is an alternative to inspection of buried piping. What is the minimum liquid pressure to adequately conduct this test? A. B. C. D.
1 1/2 times the MAWP 1 1/4 times the MAWP 10% greater than MAWP Actual MAWP
Section/page _____________________ Reference Publication__________________ 4.
For a single-wall material thickness, over 0.375”through 0.50, what is the hole type designation for a source side penetrameter? A. B. C. D.
15 17 20 25
Section/page _____________________ Reference Publication__________________ 5.
Give the corresponding “P” number for SA 414 Grade A material A. B. C. D.
1 2 3 11B
Section/page _____________________ Reference Publication__________________ 6.
On a Class 1500 NPS 4 blind flange, what is the minimum thickness permitted? A. B. C. D.
1.12” 1.88” 2.12” 2.88”
Section/page _____________________ Reference Publication__________________ 7.
For 1 ¼ inch thick carbon steel, what is the recommended preheat temperature? A. B. C. D.
300°F 235°F 175°F None
Section/page _____________________ Reference Publication__________________ 8.
Determine the MAWP of the following piping system, at the next inspection, based on the following:
API 510 Practice exam
Mohan Raj
Page 2 of 7
Design pressure/temperature
100 psig/100°F
Pipe description
NPS 20, Std, A 106-B
Outside diameter of pipe, D
20.0 in.
Thickness determined from Inspection
0.280 in.
Observed Corrosion Rate
0.02 inches/year
Next planned inspection
5 Years
A. B. C. D.
160 550 723 125
psig psig psig psig
Section/page _____________________ Reference Publication__________________ 9.
What is the inspection interval for buried piping without cathodic protection, if the soil resistivity is 6,500 ohm-cm? A. B. C. D.
10 years 15 years 5 years Whenever a leak is suspected
Section/page _____________________ Reference Publication__________________ 10. What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions piping system? A. B. C. D.
>TwX3 ≤Tw /3 ≥12T 3/23”
Section/page _____________________ Reference Publication__________________ 11. What is the design thickness of NPS 2 ½ A106B pipe that operates at 25 psi/200°F? A. B. C. D.
0.275” 0.100” 0.002” Not enough information given
Section/page _____________________ Reference Publication__________________ 12. With respect to Category D service, what is the maximum allowable undercut for a branch connection? A. Zero (no evident imperfections) B. ≤1/32 inch C. ≤1 mm
API 510 Practice exam
Mohan Raj
Page 3 of 7
D. Both B and C Section/page _____________________ Reference Publication__________________ 13. What is the hydro test pressure of a metallic piping system whose design temperature is above the test temperature using the following conditions? NPS 6, A106-B, 100psi/800°F A. B. C. D.
150 psig 450 psig 278 psig Test temperature verses design temperatures are not different
Section/page _____________________ Reference Publication__________________ 14. Determine the MAWP of the following piping system, at the next inspection, based on the following: Design pressure/temperature
100 psig/750°F
Pipe description
NPS 6, Std, A 285-C EFW, Straight seam (No radiography)
Outside diameter of pipe, D
6 5/8 in.
Thickness determined from Inspection
0.280 in.
Observed Corrosion Rate
0.01 inches/year
Next planned inspection
5 Years
MAWP= ______________ A. B. C. D.
522 487 878 125
psig psig psig psig
Section/page _____________________ Reference Publication__________________ 15. Impact testing of each form of material for any specification shall be done using procedures and apparatus in accordance with: A. B. C. D.
ASTM A 370 ASME Section V API 570 AWS D 1.5
Section/page _____________________ Reference Publication__________________ 16. In the AWS A5.1, what is the designation for a cellulose DCEP electrode? A. B. C. D.
E7018 E7016 E6011 E6010
API 510 Practice exam
Mohan Raj
Page 4 of 7
Section/page _____________________ Reference Publication__________________ 17. What is the heat treatment holding time based on hour per inch of carbon steel 1¼” thick? A. B. C. D.
2.4 1.5 1.0 0.5
hr/in hr/in hr/in hr/in
Section/page _____________________ Reference Publication__________________
MAWP
(This information applies to question 108-120, where applicable)
Design pressure/temperature
564 psi/900°F
Pipe description
NPS 12, Sch.160, A 285 Gr.B, A672 Class 23
Thickness from Inspection
0.997”
Corrosion Rate
0.023 inches/year
Class 1 18. What is the MAWP of the system? A. B. C. D.
864.07 psig 86.407 psig 664.7 psig 66.47 psig
Section/page _____________________ Reference Publication__________________ 19. Can a 5 year inspection interval be performed? A. B. C. D.
Yes because the MAWP at the next inspection is 864.07 psig Yes because the MAWP at the next inspection is 664.07 psig Yes because the MAWP at the next inspection is 66.47 psig No because the MAWP at the next inspection is 564 psig
Section/page _____________________ Reference Publication__________________ 20. What is the minimum required thickness of the system listed above? A. B. C. D.
1.312” 1.112” 0.997” 0.650”
Section/page _____________________ Reference Publication__________________ 21. Calculate the long term corrosion rate of the system listed above based on: 5 year interval: third cycle.
API 510 Practice exam
Mohan Raj
Page 5 of 7
A. B. C. D.
0.023” 0.021” 0.112” 0.997”
Section/page _____________________ Reference Publication__________________ 22. Calculate the short term corrosion rate of the system listed above, based on t previous = 1.112” t last = 0.997” 5 year interval: third cycle A. B. C. D.
0.023” 0.021” 0.112” 0.997”
Section/page _____________________ Reference Publication__________________ 23. Calculate the remaining life of the system listed above. A. B. C. D.
Less than 1 year 5 years 10 years 15 years
Section/page _____________________ Reference Publication__________________ 24. What is the calculated thickness of a 150 pound, NPS 8 flanged “T” A. B. C. D.
0.030” 0.060” 0.130” 0.310”
Section/page _____________________ Reference Publication__________________ 25. What is the outside diameter of a gasket type E-2 for the fitting in question 114? A. B. C. D.
10.62” 8.62” 12.12” 12.62”
Section/page _____________________ Reference Publication__________________ 26. What is the P number for the pipe in question 108? A. B. C. D.
1.5 1 6 24
API 510 Practice exam
Mohan Raj
Page 6 of 7
Section/page _____________________ Reference Publication__________________ 27. What is the Group number for the pipe in question 108? A. B. C. D.
1.5 1 6 24
Section/page _____________________ Reference Publication__________________ 28. What is the SFA number for E-7048 electrode? A. B. C. D.
5 5.1 5.29 5.42
Section/page _____________________ Reference Publication__________________ 29. What is the filler number for E-7018 electrodes? A. B. C. D.
1 2 3 4
Section/page _____________________ Reference Publication__________________ 30. What is the position designation for welding pipe in the horizontal fixed position? A. B. C. D.
2G 3G 5G 6G
Section/page _____________________ Reference Publication__________________
API 510 Practice exam
Mohan Raj
Page 7 of 7
Determine the MAWP of the following piping system, at the next inspection, based on the following Design pressure/temperature
100 psig/100°F
Pipe description
NPS 2, Sch.80, A 106-B
Outside diameter of pipe, D
2.375 in.
Thickness determined from Inspection
0.190 in.
Observed Corrosion Rate
0.03 inches/year
Next planned inspection
5 Years
MAWP= ____________________ A. B. C. D.
674 psig 323 psig 125 psig Metal loss exceeds the requirements for 5 year inspection interval
Section/page _____________________ Reference Publication__________________ 2.
What is the pressure design thickness of NPS 10, A516 Gr.65 Type-22 pipe that operates at 1200 psig at 750°F A. B. C. D.
0.432” 0.46” 0.928” Not enough information given
Section/page _____________________ Reference Publication__________________
API 510 Practice exam
Mohan Raj
Page 1 of 7
3.
A leak test is an alternative to inspection of buried piping. What is the minimum liquid pressure to adequately conduct this test? A. B. C. D.
1 1/2 times the MAWP 1 1/4 times the MAWP 10% greater than MAWP Actual MAWP
Section/page _____________________ Reference Publication__________________ 4.
For a single-wall material thickness, over 0.375”through 0.50, what is the hole type designation for a source side penetrameter? A. B. C. D.
15 17 20 25
Section/page _____________________ Reference Publication__________________ 5.
Give the corresponding “P” number for SA 414 Grade A material A. B. C. D.
1 2 3 11B
Section/page _____________________ Reference Publication__________________ 6.
On a Class 1500 NPS 4 blind flange, what is the minimum thickness permitted? A. B. C. D.
1.12” 1.88” 2.12” 2.88”
Section/page _____________________ Reference Publication__________________ 7.
For 1 ¼ inch thick carbon steel, what is the recommended preheat temperature? A. B. C. D.
300°F 235°F 175°F None
Section/page _____________________ Reference Publication__________________ 8.
Determine the MAWP of the following piping system, at the next inspection, based on the following:
API 510 Practice exam
Mohan Raj
Page 2 of 7
Design pressure/temperature
100 psig/100°F
Pipe description
NPS 20, Std, A 106-B
Outside diameter of pipe, D
20.0 in.
Thickness determined from Inspection
0.280 in.
Observed Corrosion Rate
0.02 inches/year
Next planned inspection
5 Years
A. B. C. D.
160 550 723 125
psig psig psig psig
Section/page _____________________ Reference Publication__________________ 9.
What is the inspection interval for buried piping without cathodic protection, if the soil resistivity is 6,500 ohm-cm? A. B. C. D.
10 years 15 years 5 years Whenever a leak is suspected
Section/page _____________________ Reference Publication__________________ 10. What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions piping system? A. B. C. D.
>TwX3 ≤Tw /3 ≥12T 3/23”
Section/page _____________________ Reference Publication__________________ 11. What is the design thickness of NPS 2 ½ A106B pipe that operates at 25 psi/200°F? A. B. C. D.
0.275” 0.100” 0.002” Not enough information given
Section/page _____________________ Reference Publication__________________ 12. With respect to Category D service, what is the maximum allowable undercut for a branch connection? A. Zero (no evident imperfections) B. ≤1/32 inch C. ≤1 mm
API 510 Practice exam
Mohan Raj
Page 3 of 7
D. Both B and C Section/page _____________________ Reference Publication__________________ 13. What is the hydro test pressure of a metallic piping system whose design temperature is above the test temperature using the following conditions? NPS 6, A106-B, 100psi/800°F A. B. C. D.
150 psig 450 psig 278 psig Test temperature verses design temperatures are not different
Section/page _____________________ Reference Publication__________________ 14. Determine the MAWP of the following piping system, at the next inspection, based on the following: Design pressure/temperature
100 psig/750°F
Pipe description
NPS 6, Std, A 285-C EFW, Straight seam (No radiography)
Outside diameter of pipe, D
6 5/8 in.
Thickness determined from Inspection
0.280 in.
Observed Corrosion Rate
0.01 inches/year
Next planned inspection
5 Years
MAWP= ______________ A. B. C. D.
522 487 878 125
psig psig psig psig
Section/page _____________________ Reference Publication__________________ 15. Impact testing of each form of material for any specification shall be done using procedures and apparatus in accordance with: A. B. C. D.
ASTM A 370 ASME Section V API 570 AWS D 1.5
Section/page _____________________ Reference Publication__________________ 16. In the AWS A5.1, what is the designation for a cellulose DCEP electrode? A. B. C. D.
E7018 E7016 E6011 E6010
API 510 Practice exam
Mohan Raj
Page 4 of 7
Section/page _____________________ Reference Publication__________________ 17. What is the heat treatment holding time based on hour per inch of carbon steel 1¼” thick? A. B. C. D.
2.4 1.5 1.0 0.5
hr/in hr/in hr/in hr/in
Section/page _____________________ Reference Publication__________________
MAWP
(This information applies to question 108-120, where applicable)
Design pressure/temperature
564 psi/900°F
Pipe description
NPS 12, Sch.160, A 285 Gr.B, A672 Class 23
Thickness from Inspection
0.997”
Corrosion Rate
0.023 inches/year
Class 1 18. What is the MAWP of the system? A. B. C. D.
864.07 psig 86.407 psig 664.7 psig 66.47 psig
Section/page _____________________ Reference Publication__________________ 19. Can a 5 year inspection interval be performed? A. B. C. D.
Yes because the MAWP at the next inspection is 864.07 psig Yes because the MAWP at the next inspection is 664.07 psig Yes because the MAWP at the next inspection is 66.47 psig No because the MAWP at the next inspection is 564 psig
Section/page _____________________ Reference Publication__________________ 20. What is the minimum required thickness of the system listed above? A. B. C. D.
1.312” 1.112” 0.997” 0.650”
Section/page _____________________ Reference Publication__________________ 21. Calculate the long term corrosion rate of the system listed above based on: 5 year interval: third cycle.
API 510 Practice exam
Mohan Raj
Page 5 of 7
A. B. C. D.
0.023” 0.021” 0.112” 0.997”
Section/page _____________________ Reference Publication__________________ 22. Calculate the short term corrosion rate of the system listed above, based on t previous = 1.112” t last = 0.997” 5 year interval: third cycle A. B. C. D.
0.023” 0.021” 0.112” 0.997”
Section/page _____________________ Reference Publication__________________ 23. Calculate the remaining life of the system listed above. A. B. C. D.
Less than 1 year 5 years 10 years 15 years
Section/page _____________________ Reference Publication__________________ 24. What is the calculated thickness of a 150 pound, NPS 8 flanged “T” A. B. C. D.
0.030” 0.060” 0.130” 0.310”
Section/page _____________________ Reference Publication__________________ 25. What is the outside diameter of a gasket type E-2 for the fitting in question 114? A. B. C. D.
10.62” 8.62” 12.12” 12.62”
Section/page _____________________ Reference Publication__________________ 26. What is the P number for the pipe in question 108? A. B. C. D.
1.5 1 6 24
API 510 Practice exam
Mohan Raj
Page 6 of 7
Section/page _____________________ Reference Publication__________________ 27. What is the Group number for the pipe in question 108? A. B. C. D.
1.5 1 6 24
Section/page _____________________ Reference Publication__________________ 28. What is the SFA number for E-7048 electrode? A. B. C. D.
5 5.1 5.29 5.42
Section/page _____________________ Reference Publication__________________ 29. What is the filler number for E-7018 electrodes? A. B. C. D.
1 2 3 4
Section/page _____________________ Reference Publication__________________ 30. What is the position designation for welding pipe in the horizontal fixed position? A. B. C. D.
2G 3G 5G 6G
Section/page _____________________ Reference Publication__________________
API 510 Practice exam
Mohan Raj
Page 7 of 7
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