Section 6C - Interval & Extent of Inspection (API 570 pg 52-54)

Question 1

1. Liquid interfaces can sometimes be a more corrosive area. What technique can be used to find a liquid interface in a deadleg?

A. Acoustic Emission
B. Guided Wave examination
C. Stihl Visual (good for tree growth rings)
D. Thermography

Answer 1

D. Thermography

Question 2

2. Potentially corrosive deadlegs should be:

A. tracked in a separate circuit from the main piping system.
B. made from a higher alloy than the main piping system.
C. Inspected by radiography
D. inspected by close grid UT
E. repaired with a total knee replacement.

Answer 2

A. tracked in a separate circuit from the main piping system.

Question 3

3. Deadlegs on the main pipe line can be combined into a single circuit if the:

A. Anticipated damage mechanism is similar
B. Anticipated corrosion rates are similar.
C. Anticipated damage mechanism and corrosion rates are similar.
D. Inspector wants to

Answer 3

C. Anticipated damage mechanism and corrosion rates are similar.

Question 4

4. Inspection of auxiliary small-bore piping, piping associated with instruments & machinery, is:

A. Set per the requirements of its classification
B. Set per the Class 3 requirements
C. Optional
D. Not important

Answer 4

C. Optional

Question 5

5. Threaded connections associated with machinery are most likely to be subject to:

A. Chloride SCC
B. Fatigue cracking
C. Brittle fracture
D. Dew point corrosion

Answer 5

B. Fatigue cracking

Question 6

6. Which of the following is NOT a requirement for the organization that repairs relief devices?

A. Maintain a contract with a third party inspection company
B. Maintain a documented training program
C. Demonstrate previous experience in repairing relief devices
D. Develop and follow an internal QA procedures

Answer 6

A. Maintain a contract with a third party inspection company

Question 7

7. Per API 570, a relief device repair organization must:

A. Only have a fully documented quality assurance system.
B. Have a documented QA system and training program
C. Have a documented QA System and training program, and be a holder of a VR Stamp
D. Only have qualifications that are acceptable to the Owner/User

Answer 7

B. Have a documented QA system and training program

Question 8

8. Who is allowed by API 570 to set the interval for relief devices that protect piping systems?

A. Only the Inspector
B. Only the Piping Engineer
C. Either the Authorized Inspector or Engineer
D. Either the Authorized Inspector or Engineer or Qualified Others

Answer 8

D. Either the Authorized Inspector or Engineer or Qualified Others

Question 9

9. Relief device intervals are based on guidance found in:

A. API 576
B. ASME Sect VIII, Div. 1.
C. NBIC
D. Owner/User’s quality assurance system

Answer 9

D. Owner/User’s quality assurance system

Question 10

10. The maximum inspection interval for a pressure relief device in a typical service is:

A. The lesser of 1/2 remaining life or 10 years.
B. based on acceptable performance of the device.
C. based on the acceptable performance with a maximum interval of 5 years.
D. based on the acceptable performance with a maximum interval of 10 years.

Answer 10

C. based on the acceptable performance with a maximum interval of 5 years.

Question 11

11. The maximum inspection interval for a pressure relief device in a clean, non-corrosive and non-fouling service is:

A. 5 years
B. 10 years
C. based on the acceptable performance of the device with a maximum interval of 5 years.
D. based on the acceptable performance of the device with a maximum interval of 10 years.

Answer 11

D. based on the acceptable performance of the device with a maximum interval of 10 years.

Question 12

12. During a relief device inspection, a “pop-test” will be conducted. Who determines the acceptance criteria for the “pop-test”?

A. Authorized Inspector.
B. Engineer
C. Owner/User
D. Repair Organization

Answer 12

C. Owner/User

Question 13

13. During a “pop-test”, a relief device does NOT pop at the set pressure. Unless other rules are specified by the Owner/User, the device is considered stuck if it does NOT pop at:

A. 110% of set pressure
B. 116% of set pressure
C. 125% of set pressure
D. 150% of set pressure
E. 200% of set pressure
F. It blows up before it pops!

Answer 13

D. 150% of set pressure

Question 14

14. When relief devices are removed for inspection, the:

A. Inlet lines should be inspected for plugging
B. Outlet lines should be inspected for plugging
C. Inlet and outlet lines should be inspected for plugging
D. Repair organization should always relap the seats

Answer 14

C. Inlet and outlet lines should be inspected for plugging