API 510- Chapter 4

API 510 Chapter 4 Frequency and Data Evaluation (Sections 6 and 7)

Take a Free API 510 Exam Chapter 4 Practice test with Latest Frequency and Data Evaluation (Sections 6 and 7) Question and Answers

1.

Q1. API 510 section 6.2.1.1: inspection during installation
Which of these would not normally be included in a pre-use (installation) external inspection of a pressure vessel?

 
 
 
 

2.

Q2. API 510 section 6.2.1.2: inspection during installation
An inspector discovered that a newly installed vessel has a missing manufacturer’s data report should:

 
 
 
 

3.

Q3. API 510 section 6.3: risk-based inspection
An RBI assessment may be used to establish inspection intervals for:

 
 
 
 

4.

Q4. API 510 section 6.4.1: external inspection period
How often should a vessel external inspection be performed on an above-ground vessel?

 
 
 
 

5.

Q5. API 510 section 6.5.1.1: internal inspection interval
What is the interval between internal inspections for a vessel with a projected remaining life of 30 years that is in continuous use?

 
 
 
 

6.

Q6. API 510 section 6.5.1.1/6.5.1.2: internal inspection interval
A vessel has a projected remaining life of 15 years under its current regime of being in use 50 % of the time. The remainder of the time it is isolated from the process fluid and damage mechanisms by being filled with nitrogen. What is the internal inspection interval?

 
 
 
 

7.

Q7. API 510 section 6.6: PRVs Pressure-relieving devices should be inspected, tested, and maintained in accordance with:

 
 
 
 

8.

Q8. API 510 section 6.6.2.2: PRV inspection intervals
The maximum test/inspection interval for PRVs in a ‘typical process service’ is:

 
 
 
 

9.

4.5 API 510 section 7 familiarization questions
Q1. API 510 section 7.1.1.1: corrosion rates
Short-term corrosion rates are typically determined by:

 
 
 
 

10.

Q2. API 510 section 7.1.2: corrosion rate for vessels/changes in service
A vessel has just changed service and no published or ‘similar service’ data are available to predict the probable corrosion rate under the new service regime. What should the inspector do?

 
 
 
 

11.

Q3. API 510 section 7.4.2: evaluation of locally thinned areas
For vessels with an inside diameter of less than or equal to 60 inches, corroded wall thickness is averaged over a length not exceeding the lesser of:

 
 
 
 

12.

Q4. API 510 section 7.4.2: evaluation of locally thinned areas
A vessel has an inside diameter of 90 inches. What is the maximum allowed averaging length for calculating corroded wall thickness?

 
 
 
 

13.

Q5. API 510 section 7.4.2.3: evaluation of locally thinned areas
For an internally pressurized cylindrical vessel shell with no significant induced bending stresses (e.g. wind loads) corrosion is usually averaged along which plane?

 
 
 
 

14.

Q6. API 510 section 7.4.4.2: advanced thinning analysis
As a general rule, the design stress used for an ASME VIII division 2 appendix 4 assessment (when used as an alternative to API 510) is:

 
 
 
 

15.

Q7. API 510 section 7.4.6: assessing corrosion in vessel heads
The effect of corrosion near the center of vessel heads is calculated under API 510 using:

 
 
 
 

16.

Q8. API 510 section 7.4.6.2: corroded areas in vessel heads
For tori spherical heads, the central portion can be assumed to be a hemisphere of radius equal to:

 
 
 
 

17.

Q9. API 510 section 7.4.6.3: corroded areas in vessel heads
For ellipsoidal heads, the central portion can be assumed to be a hemisphere of radius equal to:

 
 
 
 

18.

Q10. API 510 section 7.7: evaluation of vessels with minimal documents
For a pre-1999 pressure vessel that has drawings but no nameplate information the inspector and engineer should:

 
 
 
 

Question 1 of 18

Click Here To Read Next API 510 Chapter 5 Repair, Alteration, Re-rating (Section 8)

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4.3 API 510 section 6 familiarization questions

4.5 API 510 section 7 familiarization questions

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