API 570 Question Bank (API 570 QB001)

104) A piping engineer is designing a piping service with high potential consequences if a failure occurs, i.e., a 350 psi natural gas line adjacent to a high density population area. What should he consider doing for unanticipated situations?

a) Have all his calculations checked twice.

b) Increase the required minimum thickness.

c) Notify the owner-user and the jurisdiction.

d) Set up an emergency evacuation procedure.

105) When evaluating locally thinned areas, the surface of the weld includes __________ on either side of the weld or __________ times the minimum measured thickness on either side of the weld, whichever is greater.

a) 0.5”, 3

b) 1”, 2

c) 2”, 1

d) 1.5”, 1.5

106) An inspector finds a thin area in a fabricated 24" diameter pipe. The thin area includes a longitudinal weld in the pipe and is 10 feet long and 2 foot circumferentially. Calculations show that with 0.85 joint factor, the pipe must be repaired, renewed, etc. or the pressure in the pipe must be lowered. The owner does not want to do any hot work on the pipe and he does not wish to lower the pressure. What other course could you follow?

a) Write the results of the inspection up and leave it with the owner.

b) Radiograph the weld 100 % and increase the joint factor to one.

c) Insist that the weld be repaired or renewed or that the pressure be lowered.

d) Call in a regulator agency to force the owner to repair, renew, etc. the line.

107) Piping stress analysis is done during the system's original design. How can the inspector make use of stress analysis information?

a) An inspector cannot use this information. It is only meaningful to a piping engineer.

b) It can be used to make sure the piping system was originally evaluated and designed correctly.

c) It can be used to concentrate inspection efforts at locations most prone to fatigue or creep damage, and to solve vibration problems.

d) The inspector should use this information to evaluate the need for conducting additional piping stress analysis.

108) You are inspecting a piping system. You find a significant loss of material (a major increase of corrosion rate) in gas oil piping (used as reboiler oil, temperature 

 500°F) on a Fluid Catalytic Cracking Unit. What is the best course of action for you to take?

a) The losses may be reported to your supervisor for corrective response

b) The losses should be recorded and reported in your final report after the unit has started.

c) It shall be reported to the owner-user for appropriate action.

d) Replace excessively thin piping and note replacement in the final report after unit start-up.

109) The __________ shall maintain appropriate permanent and progressive records of each piping system covered by API 570.

a) Inspector

b) Owner-user

c) Jurisdiction

d) Examiner

110) When making repairs and alterations to piping systems, the principles of __________ or the code to which the piping system was built shall be followed:

a) ASME B31.3

b) API 570

c) API 574

d) ASME B&PV Code

111) Repair and alteration work must be done by a repair organisation as defined in API 570 and must be authorised by the __________ prior to its commencement:

a) Jurisdiction

b) Inspector

c) Owner-user

d) Examiner

112) Authorisation for alteration work to a piping system may be given by the inspector after:

a) Notifying the jurisdiction and getting their approval

b) Consulting API 570 and getting the approval of the owner-user

c) Consultation with and approval by a piping engineer

d) Discussing with and consent by an examiner

113) A repair procedure involving welding requires that the root pass of the weld be inspected before continuing the weld. A "hold" on the repair is required at this point. Who designates this "hold?"

a) A metallurgist

b) The owner-user

c) An API 570 inspector

d) The welder supervisor 

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