Section 7 - Inspection Data, Analysis & Recording (API 570 pg 54-62)

Question 1

1. Determine the corrosion rate occurring on a 12 NPS pipe based on this data.

                   Tmin      10/2016   4/2012 Thick    0.225"      0.270"      0.288" 

A. 3.6 mpy (mils per year)
B. 4.0 mpy
C. 4.5 mpy
D. 10.0 mpy
E. 14.0 mpy

Answer 1

B. 4.0 mpy

Question 2

2. Determine the remaining life for an 8 NPS pipe based on the following data:Tmin 6/2003 6/2012 11/2016
   0.344” 0.422” 0.395” 0.368”
   (measurements are thickness readings)
   A. 3 years
   B. 4 years
   C. 6 years
   D. 9 years

Answer 2

B. 4 years

Question 3

3. Determine the remaining life for a 14 NPS pipe based on the following data:

Tmin 6/2016 6/2013 6/2008
0.466” 0.536” 0.557” 0.576”
(measurements are thickness readings)

A. 5 years
B. 7 years
C. 10 years
D. 14 years
E. 18.5 years

Answer 3

C. 10 years

Question 4

4. When the short-term and long-term corrosion rates differ significantly, who should determine which rate to use in the remaining life calculations?

A. the authorized inspector
B. The piping engineer
C. Both inspector and corrosion specialist
D. Either inspector or corrosion specialist

Answer 4

C. Both inspector and corrosion specialist

Question 5

5. Statistical analysis using point measurements on a piping system is not applicable to piping systems with:

A. Uniform internal corrosion
B. Predictable localized corrosion
C. High external corrosion rates
D. Significant unpredictable localized corrosion

Answer 5

D. Significant unpredictable localized corrosion

Question 6

6. Which of the following is NOT an acceptable way to establish the corrosion rate for a newly installed piping system?

A. Similar Service
B. Owner’s experience
C. Published data
D. Inspect after 5000 hours

Answer 6

D. Inspect after 5000 hours

Question 7

7. The operating conditions on a piping system have changed. The inspector must obtain a probable corrosion rate for the new conditions. Which of the following is the preferred way to establish the corrosion rate for the new service?

A. Similar service
B. Owner’s experience
C. Published data
D. Inspect after 3 months

Answer 7

A. Similar service

Question 8

8. For new piping, what is the preferred method to determine the probable corrosion rate?

A. Initial thickness readings after 3 months of service
B. Owner/User’s experience gained at a research facility
C. Data collected by the Owner/User on similar service piping systems
D. Corrosion data published in a trade journal

Answer 8

C. Data collected by the Owner/User on similar service piping systems

Question 9

9. Which of the following is the least desirable way to establish the corrosion rate for a newly installed piping system?

A. Similar service
B. Owner’s experience
C. Published data
D. Inspect after 3 months

Answer 9

D. Inspect after 3 months

Question 10

10. Determining MAWP for a pipe system with unknown materials:

A. is not allowed
B. Can only be done by the piping engineer
C. Can be made by using the lowest grade material and joint efficiency in code
D. Can be made only after PMI is done to determine material specification

Answer 10

C. Can be made by using the lowest grade material and joint efficiency in code

Question 11

11. When the MAWP for a piping system is recalculated, the wall thickness used in these computations shall be the actual wall thickness of the piping system: (open book)

A. Recorded by the last field measurement
B. minus the estimated corrosion loss before the next inspection date
C. Minus twice the estimated corrosion loss before the next inspection date
D. Plus the estimated corrosion loss before the next inspection date
E. Plus twice the estimated corrosion loss before the next inspection date

Answer 11

C. Minus twice the estimated corrosion loss before the next inspection date

Question 12

12. The minimum required pipe wall thickness shall be the:

A. Pressure design thickness
B. Structural minimum thickness
C. Greater of the pressure design thickness or structural minimum thickness
D. Lesser of the pressure design thickness or structural minimum thickness

Answer 12

C. Greater of the pressure design thickness or structural minimum thickness

Question 13

13. What code should be used to evaluate crack-like indications on an existing piping system?

A. API 570
B. API 578
C. API 579
D. API 580
E. ASME Section VIII Division 2

Answer 13

C. API 579

Question 14

14. What code should be used to evaluate localized thin areas on an existing piping system?

A. API 571
B. API 579
C. API 598
D. API 2201
E. ASME Section VIII Division 2

Answer 14

B. API 579

Question 15

15. Which of the following is not a concern about the flexibility of a piping system?

A. Long straight run with few changes in direction
B. Piping connected to mechanical equipment
C. Increasing the pipe diameter
D. Decreasing pipe wall thickness

Answer 15

D. Decreasing pipe wall thickness

Question 16

16. What of the following is most helpful in identifying highly stressed piping components?

A. Shear wave UT
B. External inspections
C. Vibration monitoring
D. Piping stress analysis

Answer 16

D. Piping stress analysis

Question 17

17. A pipe stress analysis can be helpful in predicting:

A. Expected corrosion rates
B. Pipe MDMT
C. Vibrations from pipe’s natural frequency
D. Temper-embrittlement of Low-Chrome steels

Answer 17

C. Vibrations from pipe’s natural frequency

Question 18

18. A pipe stress analysis can be helpful in concentrating inspection efforts when looking for:

A. Creep or fatigue
B. Fatigue or galvanic corrosion
C. Galvanic corrosion or liquid metal embrittlement
D. Liquid metal embrittlement or temper-embrittlement

Answer 18

A. Creep or fatigue

Question 19

19. Who is responsible to maintain piping records for piping systems covered under API 570?

A. Authorized inspector
B. Authorized inspector agency
C. Owner/User
D. Repair organization

Answer 19

C. Owner/User

Question 20

20. API 570 requires which of the following names to be documented in the equipment records?

A. Person performing piping rerate calculations
B. Person performing piping Tminimum calculations
C. Person performing NDE examinations on piping systems
D. Person performing a repair

Answer 20

C. Person performing NDE examinations on piping systems

Question 21

21. Operation and maintenance records concerning a specific pipe system should be:

A. Available for review by the authorized inspector
B. filed in a central filing system with the inspection records
C. Maintained for 5 years
D. Maintained for the life of the pipe

Answer 21

A. Available for review by the authorized inspector

Question 22

22. A primary use of the inspection isometrics is to record:

A. CML locations
B. CML readings
C. Minimum required pipe thickness
D. Process parameters

Answer 22

A. CML locations

Question 23

23. Another primary purpose for the inspection isometrics is to:

A. Document the corrosion rates at specific CML’s
B. identify locations for recommended repairs
C. record inspection findings
D. Use as a substitute for P&IDs

Answer 23

B. identify locations for recommended repairs

Question 24

24. inspection isometrics are recommended for:

A. all petrochemical piping
B. Class 1-3 unit piping
C. Class 1-2 unit piping and piperack piping
D. Class 1-3 unit piping and Class 1 piperack piping
E. Class 1-2 unit piping and Class 1 piperack piping

Answer 24

D. Class 1-3 unit piping and Class 1 piperack piping

Question 25

25. The owner/User must have: A. Access to a professional engineer B. A direct hire authorized inspector C. A system to tracking and review outstanding repair recommendations D. Inspection isometrics of all piperack piping

Answer 25

C. A system to tracking and review outstanding repair recommendations

Question 26

26. When an external inspection is performed: A. A report in a checklist format is recommended B. A combined report with a checklist and written narrative is recommended C. It must be performed by an API 570 inspector D. It must include taking thickness readings

Answer 26

B. A combined report with a checklist and written narrative is recommended

Question 27

27. Per API 570, overdue inspections are: A. Not allowed B. Only allowed on low consequence piping C. Only allowed on low risk piping D. Allowed if process conditions do not allow for the pipe to be serviced by due date

Answer 27

A. Not allowed

Question 28

28. Per API 570, interval deferrals for a specific owner/ user: A. Should be done in accordance to API 580 B. should only be an occasional occurrence C. requires jurisdictional approval D. are only allowed on Class 3 & 4 piping

Answer 28

B. should only be an occasional occurrence

Question 29

29. a simplified deferral is one that extends the interval: A. for only class 3 or 4 piping B. for only off-site piping C. the lesser of 10% of the current interval or 6 months D.the lesser of 10% of the current interval or 12 months

Answer 29

C. the lesser of 10% of the current interval or 6 months

Question 30

30. The current thickness interval is 8 years. This interval is being deferred for 4 months. Who must concur with this interval deferral? A. Both the inspector and engineer B. either the inspector or the engineer C. both the engineer and operation's management D. either the engineer or operation's management E. both the inspector and operation's management

Answer 30

E. both the inspector and operation's management

Question 31

31. Which of the following is NOT a requirement for a regular deferral? (non-simplified) A. Review current inspection plan to see if will need modifications B. An MOC must be completed that supports the new deferral interval C. A risk assessment must be completed that supports the deferral D. The piping records are updated with the documentation supporting the deferral E. review current Integrity Operation Windows to see if modifications are needed

Answer 31

B. An MOC must be completed that supports the new deferral interval

Question 32

32. An inspection interval is being deferred for 16 months. Who must concur with this deferral? A. Both the inspector and engineer B. both the engineer and operation's management C. either the engineer or operation's management D. both the inspector and operation's management

Answer 32

D. both the inspector and operation's management

Question 33

33. When can an inspector be the sole approver for interval deferrals? A. Never B. Interval is deferred no more than 6 months C. interval is deferred no more than 12 months D. interval is deferred the lesser of 6 months or 10% of the existing interval E. interval is deferred the lesser of 12 months or 25% of the existing interval

Answer 33

A. Never