Free Practice API API-570 Exam Questions 2025

Stay ahead with 100% Free Piping Inspector API-570 Dumps Practice Questions

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Total 170 Questions | Updated On: Apr 24, 2025

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Question 1

A welder continuity log should be maintained to allow verification that each welder has utilized each welding

process within a _______ period.

A : one year

B : 3 month

C : 2 year

D : six month

Answer: D

Question 2

A NPS 4 Schedule 80 (0.337" wall) branch connection is welded into a NPS 6 Schedule 40 (0.280" wall). A 0.375" reinforcing pad is used around the branch connection. The fillet weld sizes are as required by the Code. The branch connection is inserted into the header. The material of the branch and header is ASTM A672 Grade B70. What thickness would be used to determine whether heat treatment of the connection is required ? (Express answer to nearest hundredth)

A : 0.768"

B : 0.891"

C : 0.998"

D : 0.567"

Answer: B

Question 3

The three hardness tests normally used are the:

A : Schindler, Johnson, Williams

B : Rockwell, Vickes, Brinell

C : Rockwell, UT, Shearwave

D : Brinell, Vicky, Rockdale

Answer: B

Question 4

Resistance to sulphidation is generally achieved by

A : Upgrading to higher nickel alloys

B : Upgrading to higher chromium alloys

C : Upgrading to higher copper based alloys

D : All of the above.

Answer: B

Question 5

A blank is required between two NPS 10, 300 lb. class flanges. The maximum pressure in the system is 385 psi at 200 degrees F. A corrosion allowance of 0.175" is required. The inside diameter of the gasket surface is 9.25". The blank is ASTM A516 Grade 70 material with no weld joint. Calculate the pressure design thickness required for the blank

A : 0.789"

B : 0.692"

C : 0.556

D : 0.768"

Answer: B

Page: 1 / 34

Total 170 Questions | Updated On: Apr 24, 2025

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