API 510 Pressure Vessel Inspector Exam Questions & Answers

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We have collected API 510 Pressure Vessels Inspector's Examination information, Study Materials, Various organization's preparatory course materials, Question Banks and answers from many sources and archived as a single RAR file.

The following documents are available in this archive

1. Examination information includes;
   1. Publication Effectivity Sheets - it contents the details of codes and standards shall be studied for this exam
   2. Body of knowledge - it describes detailly about the required knowledge of the candidate in all aspect
   3. The examination schedule and fees detail for the year 2020
   4. Complete detailed instructions about CBT - Computer-Based Testing
   5. Tutorial about the CBT usage
   6. Reference document for the pre-test questions
2. Preparatory Course Documents
   1. Haward Technology Material
   2. Kuwait Petroleum Training Material
   3. and many more
3. Question Banks which contents approximately 1000 with answers
4. Code wise Mock-up Test
5. Code reference provided for maximum questions

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Note: If you read these documents, it will increase your chances to succeed your examination, but remember these are not your actual API exam questions.

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Tags: API 510 Question & Answer, API 510 Sample Question, API 510, API 510 Question Bank, API 510 MOCKUP Test, Pressure Vessel Inspector,  API 510 Pressure Vessel Inspector

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API 510 Free Downloadable Question Bank

SL #	FILE NAME	Download Link
1	API 510 Exam1	click here
2	API 510 Exam 2	click here
3	API 510 Exam 3	click here
4	API 510 Exam 4	click here
5	API 510 Exam 5	click here
6	API 510 Exam 6	click here
7	API 510 Exam 7	click here
8	API 510 Exam 8	click here
9	API 510 Exam 9	click here
10	API 510 Final Closed Book	click here
11	API 510 Final Open Book	click here
12	API 510 MID Closed Book	click here
13	API 510 MID Open Book	click here

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API 510 Free Downloadable Question Bank

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Here the third and forth free downloadable question banks. apiXams is requesting visitors to use maximum links which is available in this blog. Please visit our advertisers websites at least one advertiser website. Visitors also requested to share their comments. It will help to improve our service.

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API 510 Free Downloadable Question Bank

Second free downloadable question bank. apiXams is requesting visitors to click and follow our advertisers websites to give better service.

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API 510 Free Downloadable Question Bank

API 510 Pressure Vessel Inspector Certification Examination Practice Questions With Answers are available here for free download. The first available download file contents 20 questions with answers all closed book exam questions. Use below given link to download.

Use this links to download (msword format) Download link 1 or Download link 2

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API 510 Question Bank (API 510 QB001) Full Version

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API 510 Question Bank (API 510 QB002)

Hie! folks,

This is the second question bank for API 510 Pressure Vessel Inspector Exam. For your information this second question bank questions are open book questions, you can refer code books during exam to answer. 

1. A standard  seamless , ASME F & D head (Torispherical) is used for the following conditions:

Material of Construction = SA 515 gr 60

Design Pressure = 250 psig 

Design temp = 580ºF

Inside Crown Radius = 72 inches 

Minimum available thk. = 1.14 inches 

Category B welds are spot radiographed.

Corrosion allowance = 0.125 inches 

Allowable stress at design temp.   = 16400 psig

Your assessment is:

a. The head does not meet code requirements.

b. The head meets the code requirements.

c. Suitability would depend on decision of pressure vessel inspector.

d. Data are not adequate.

2. A pressure vessel is to be constructed with MDMT = +20°F, M.O.C = SA 515 gr 60 . Impact testing not performed.

Required shell thickness = ¾ , dished head thk. =  1-⅛ " ( torisph. head). Determine if this material is suitable for:

a. Both shell as well as dished head

b. Suitable for head but not for shell

c. Suitable for shell only but not for head

d. Not suitable for either

3. For a certain pressure vessel with spot radiography, and all Welds  type 1, 

Vessel diameter =  72 inch I.D.  

M.O. C = SA 515 gr 70 

Design temp. = 600°F 

Allowable stress at design temp. = 20,000 psi  

If shell thk. = 5/8" and C. A = 1/8", the MAWP for the shell will be:

a. 234 psi

b. 168 psi

c. 256 psi 

d. None of the above

4. A pressure vessel (M.O.C. 516 gr. 70) has external jacket spread over 72 inches length of the shell. (Jacket pressure = 180 psi, Jacket temperature = 350°F) the vessel OD = 36 inches. Shell thickness= 0.5 inch, C.A. = Nil.  Decide which of the following are applicable in the present case.

a. Shell thickness is OK.

b. Shell thickness is NOT OK.

c. Data are not adequate.

d. Acceptance of shell thickness depends on opinion of vessel engineer.

5. Choose correct hydrostatic test pressure from given options for a vessel   with the following data:

Design Pr = 360 psi

Design temp = 675ºF

M.O.C = SA 537 Cl. 1

Allow stress (Ambient) = 18600 psi

Allow stress (675°F) = 16900 psi

a. 540 psig 

b. 515 psig

c. 450 psig

d. None of above

6. Impact test requirement for the two plates is to be assessed for MDMT = 0ºF, to be used for Vessel which will be hydrotested and used for steady operation. 

Plate A. Plates 537 class 1,    2.0 inch thick 

Plate B. Plates 515 gr 60,      0.75 inch thick 

Your assessment is:

a. Plate (A) and plate (B) both require impact test.

b. Only (A) requires, (B) is exempt.

c. Only (B) requires, (A) is exempt.

d. Both do not require impact testing.

7. For vessel shell, thk= 4.0 inch, max. weld mismatch shall be as follows:

a. Long seam = ¼”, circ seam = ½”

b. Long seam = ¼”, circ seam = 7/32”

c. Long seam = 7/32”, circ seam = ¼”

d. Long seam = 5/8”, circ seam = ½”

8. Toughness (opposite of brittleness) will be best for which materials:

a. Materials represented by curve A

b. Materials represented by curve B

c. Materials represented by curve C

d. Materials represented by curve D

9. In a pressure vessel one of the 2:1 ellipsoidal dished head is removed and a new seamless dished head of same type is installed with a single ‘V’ joint with backing strip and full radiography. What is the joint category, type and efficiency of the joint now?

a. Category-B,  Type-1 &  E-0.9

b. Category-B,  Type-2 &  E-0.9

c. Category-A,  Type-2 &  E-1.0

d. Category-B,  Type-2 &  E-1.0

10. A pressure vessel of overall height 80’ has its part MAWP at various parts as detailed in the sketch. What is the vessel MAWP (hydrostatic head 1’ = 0.433 psi)?

a. 419 psi

b. 420 psi

c. 430 psi

d. 426 psi 

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Answer Sheet for API 510 QB001

Question No	Answer
1	B
2	D
3	B
4	C
5	C
6	C
7	A
8	D
9	A
10	A
11	B
12	A
13	D
14	B
15	C
16	B
17	B
18	C
19	B
20	C

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API 510 Question Bank (API 510 QB001)

Today's question here...........

18. ASME Sec. VIII Div. 1 recommends use of U.T. in place of R.T. (for a fully radiographed vessel) for:
a. All butt welds in vessel
b. All butt and fillet welds in vessel
c. For closing seams only
d. The code does not permit use of U.T. at all 

19.   Vessel MAWP for tall vertical vessel will normally be:
a. Greater than vessel part MAWPs
b. Lower than Vessel part MAWPs
c. May be (a) or (b) depending on Vessel height
d. Is always same as vessel design pressure

20. For a vessel constructed with Type 1 welds:
a. RT3 means E = 1
b. RT2 means E = 0.85
c. RT1 and RT2 may mean E = 1
d. RT4 means spot radiography

API 510 Question Bank (API 510 QB001) completes here check next post for answers.

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FAQ on New Examination Scheme

What stays the same?
The most important thing that will stay the same is that the exams will still yield accurate, fair results for all candidates. The test will still have 150 total questions to be answered. Using pre­test items on an exam in no way impacts scoring or test taker performance, since test takers are unable to identify which questions are scored and which are not. Test takers shouldn't notice any difference at all. The minimum passing score will be calculated based on the 125 scored items. Each scored item will continue to be worth 1 point each. 

What is a pre-test question?
Pre-test questions are usually newly-written or recently revised questions.  These questions need to be vetted by the candidates before being approved.

What is the purpose of using pre-test questions?
Using pre-test items is a standard practice in the certification industry. It helps determine whether the new questions are valid, reliable and fair to be used for scoring on future exams.

Candidates will continue to be able to challenge every item on the test. When reviewing the challenges we receive on pre-test questions, we will easily find out whether those questions are misleading, unfair, or not written well. We will then be able to improve these questions before they appear on any exams again.  

In the long run, pre-testing will allow us to improve the overall quality of the exam questions and reduce the number of challenges received after each exam administration. 

Does the use of pre-test question impact how scoring works?
Absolutely not. Exams will be scored in terms of number of correct responses. The passing score will be based on a minimum number based on 125 items.  The use of pre-test items does not impact the overall exam difficulty or question difficulty in any way.

How will the passing score be comparable to the score required on the 150 item test?
API makes every effort to select questions that are equal in difficulty for every new examination we develop. However, sometimes there are slight variations in difficulty levels from one exam to the next. API will continue to use the “equating” method to establish comparable scores on the examinations. The equating process essentially adjusts the passing point of each examination to compensate for differences in the difficulty level of the two exams. Thus, the passing point always represents the minimum knowledge required and the absolute knowledge standard is held constant. The test results of candidates only reflect whether they have this minimum amount of knowledge or not. The equating process will take into account that there are only 125 test questions to score and establish an accordingly reduced passing grade for all exams.

Are exams marked on a curve?
No. Marking on a “curve” means comparing the scores of one candidate to all the other candidates who took the examination and assigning grades or passing status according to a fixed percentage. The implication is that whether an individual passes the examination or not might depend on the ability level (or preparation) of all the other candidates who took the examination. This would not be fair for a credentialing examination. 

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API 510 Question Bank (API 510 QB001)

The question bank continues..........

12. Vessel MAWP for vertical vessel is measured at:

a. Top most point of vessel

b. Bottom most point of vessel

c. At the mid point between top & bottom

d. None of above

13. Which of the following statements is true? 

a. All defects are not discontinuities. 

b. All discontinuities are defects. 

c. Discontinuities are rejectable defects. 

d. Defects are rejectable discontinuities.

14. A Pressure Vessel is designed for 0.85 joint efficiency with full penetration welds. RT requirement will be:

a. Nil          

b. Spot        

c. 100 %        

d. T-joints radiography

15. A vessel with 50 inches OD and 1¼ in. thickness is to be provided Std. torisph. heads. The heads shall be formed with crown radius and min. knuckle radius as follows:

a. 25 inch,  4 inch

b. 50 inch,  3 inch 

c. 40 inch,  3¾ inch 

d. 25 inch,  2 inch 

16. If there is a conflict between ASME VIII & API 510 Code, for vessels in-service:

a. ASME will precedent

b. API will precedent 

c. ASNT will precedent

d. Owner user will decide

17.   Two head to shell joints, one joining a seamless Hemisph, head   to shell was radiographed for full length and the other joint joining seamless std. torisph. head to shell was spot radiographed, The weld joint efficiency for each of these heads respectively will be:

a. 1,  0.85              

b. 1,  1           

c. 0.85,  1              

d. 0.85,  0.85 

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API 510 Question Bank (API 510 QB001)

API 510 questions continues here.........

6. A new pressure vessel should be inspected to which of the following codes?

a. API 510 ,                                

b. ASME Sec. 1,                          

c. ASME Sec. VIII Div. 1,                  

d. None  of these 

7. Code rules for testing vessels in service are detailed in:

a. API 510                                        

b. API 570                                            

c. ASME Section VIII Div.1                

d. None of above

8.   Identify category A joints from following:

a. Longitudinal joints

b. Circumferential joints, shell to shell 

c. Shell to hemispherical head joint  

d. a and c above 

9. If all other conditions are remains same the design thickness of which dished end (Torispherical, Hemispherical, Ellipsoidal) will be maximum?

a. Torispherical             

b. Hemispherical      

c. Ellipsoidal    

d. All will be same

10. Any thickness-offset within the allowable tolerance shell be provided a minimum taper transition of:

a. 3 to 1 min

b. 4 to 1 min

c. 3 to 2 min

d. 1 to 2 min

11. ASME Sec VIII Div. 1 specifies different acceptance level for weld reinforcement, which of the following statements are true in your opinion?

a. Permitted reinforcement for long. seems is higher than circ. seems

b. Permitted reinforcement for long. seems is lower than circ. seems

c. Permitted reinforcement for long. seems is same as circ. seems

d. Permitted reinforcement does not depend on location of seems.

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