API 510 Question Bank (API 510 QB001)

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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 570 Question Bank (API 570 QB001)

20) What is the best thing to do with deadlegs that are no longer in service?

a) Ultrasonically inspect often

b) Radiograph often

c) Inspect often

d) Remove them

21) What are the most common forms of corrosion under insulation (CUI).

a) Localised corrosion of non-ferrous metals and chloride stress corrosion cracking of carbon steel.

b) Localised corrosion of chrome-moly steel and chloride stress corrosion cracking of ferritic stainless steel.

c) Localised corrosion of carbon steel and chloride stress corrosion cracking of austenitic stainless steel

d) Localised corrosion of nickel-silicon alloy and caustic stress corrosion of austenitic stainless steel

22) What climatic area may require a very active program for corrosion under insulation?

a) Cooler northern continent locations.

b) Cooler direr, mid-continent locations

c) Warmer, marine locations

d) Warmer drier, desert locations

23) Certain areas and types of piping systems are potentially more susceptible to corrosion under insulation. Which of the items listed is not susceptible to CUI?

a) Areas exposed to mist over-spray from cooling water towers.

b) Carbon steel piping systems that normally operate in-service above 250 degrees but are in intermittent service.

c) Deadlegs and attachments that protrude from insulated piping and operate at a different temperature than the temperature of the active line.

d) Carbon steel piping systems, operating between 250 degrees F and 600 degrees F.

24) What location is subject to corrosion under insulation and inspection contributes to it?

a) Locations where pipe hangers and other supports exist.

b) Locations where insulator has been stripped to permit inspection of the piping.

c) Locations where insulation plugs have been removed to permit piping thickness measurements.

d) Locations where there is damaged or missing insulation jacketing.

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API 570 Question Bank (API 570 QB001)

15) Select thickness measurement locations (TMLs) within injection point circuits subjected to localised corrosion according to the following guidelines. Select the one that does not belong.

a) Establish TMLs on appropriate fittings within the injection point circuit.

b) Establish at least one TML at a location at least 25 feet beyond the downstream limit of the injection point.

c) Establish TMLs on the pipe wall at location of expected pipe wall impingement or injected fluid.

d) Establish TMLs at both the upstream and downstream limits of the injection point circuit.

16) What are the preferred methods of inspecting injection points ?

a) Radiography and / or ultrasonics

b) Hammer test and / or radiograph

c) Ultrasonics and / or liquid penetrant

d) Liquid penetrant and / or eddy current.

17) During periodic scheduled inspections, more extensive inspection should be applied to an area beginning __________ upstream of the injection nozzle and continuing for at least __________ pipe diameters downstream of the injection point.

a) 10 inches, 20

b) 12 feet, 10

c) 12 inches, 10

d) 10 feet, 10

18) Why should deadlegs in piping be inspected?

a) API 510 mandates the inspection of deadlegs

b) Acid products and debris build up in deadlegs

c) The corrosion rate in deadlegs can vary significantly from adjacent active piping.

d) Caustic products and debris build up in deadlegs.

19) Both the stagnant end and the connection to an active line of a deadleg should be monitored. In a hot piping system, why does the high point of a deadleg corrode and need to be inspected?

a) Corrosion occurs due to directed currents set up in the deadleg

b) Erosion occurs due to convective currents set up in the deadleg.

c) Corrosion occurs due to convective currents set up in the deadleg

d) Erosion occurs due to directed currents et up in the deadleg

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API 570 Question Bank (API 570 QB001)

See below today's questions:

5) Some of the classes of piping systems that are excluded or optional for coverage under API 570 are listed below. Which one is a mandatory included class?

a) Water                                                             

b) Catalyst lines               

c) Steam                                                             

d) Boiler feed water

6) The __________ shall be responsible to the owner-user for determining that the requirements of API 570 for inspection, examination, and testing are met.

a) Piping Engineer                          

b) Inspector

c) Repair Organisation                  

d) Operating Personnel

7) Who is responsible for the control of piping system inspection programs, inspection frequencies and maintenance of piping?

a) Authorised Piping Inspector                  

b) Owner-user

c) Jurisdiction                                                    

d) Contractor

8) An authorised piping inspector shall have the following qualifications. Pick the one that does not belong in this list:

a) Four years of experience inspecting in-service piping systems

b) High school education plus 3 years of experience in the design, construction, repair, operation, or inspection of piping systems

c) Two year certificate in engineering or technology plus 2 years of experience in the design, construction, repair, operation, or inspection of piping systems.

d) Degree in engineering plus one year experience in the design, construction, repair, operation, or inspection of piping systems

9) Risk based inspections include which of the following:

a) Likelihood assessment

b) Consequence analysis

c) Operating and inspection histories

d) All of the above

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API 570 Question Bank (API 570 QB001)

apiXams provides Question Bank freely in this blog to help who is unable to buy. If you visit our blog frequently, you will get new questions regularly. Don't miss this chance, because it will be available  for limited time period after that it will be deleted. So don't forget to visit our blog. If you want to download Complete set of Question Bank with answer immediately, visit to downloads page. Direct download link available on it, remember its not free.

We started from today, you shall save this questions with same Question Bank Code, which is provided each post heading within bracket. Because first we post all questions in this Question Bank then we will post the answers for that particular Question Bank with the same Question Bank Code.

If you missed to save with question bank code, you cannot locate correct answers. So aware and ensure every time while you save the questions for correct question bank code. See below for today's questions.

This is the first Question Bank of free edition. 

1) API 570 covers inspection, repair alteration, and re-rating procedures for metallic piping systems that __________.

a) Are being fabricated

b) Does not fall under ASTM B31.3

c) Have been in-service

d) Has not been tested

2) API 570 was developed for the petroleum refining and chemical process industries.

a) It shall be used for all piping systems.

b) It may be used, where practical, for any piping system.

c) It can be used, where necessary, for steam piping.

d) It may not be used unless agreed to by all parties.

3) API 570 __________ be used as a substitute for the original construction requirements governing a piping system before it is placed in-service.

a) Shall not

b) Should

c) May

d) Can

4) API 570 applies to piping systems for process fluids, hydrocarbons, and similar flammable or toxic fluid services. Which of the following services is not specifically applicable?
a) Raw, intermediate, and finished petroleum products

b) Water, steam condensate, boiler feed water

c) Raw, intermediate, and finished chemical products

d) Hydrogen, natural gas, fuel gas, and flare systems

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