API 510 Question Bank (API 510 QB001)

114) What type of repairs and procedures may the inspector give prior general authorisation to continue (provided the inspector is satisfied with the competency of the repair organisaton)?

a) Major repairs and minor procedures

b) Limited or routine repairs and procedures

c) Alterations and re-ratings

d) Minor re-ratings and alterations

115) Who approves all proposed methods of design, execution, materials, welding procedures, examination and testing of in-service piping?

a) The jurisdiction or the piping engineer as appropriate

b) The analyst and the operator as appropriate

c) The examiner and the piping programmer as appropriate

d) The inspector or the piping engineer as appropriate

116) Who must give approval for any on-stream welding?

a) Owner-user

b) Jurisdiction

c) Examiner

d) Analyst

117) An inspector finds a crack in the parent metal of a pipe adjacent to a support lug. The pipe was being inspected after a 5 year run. Before repairing, he should:

a) Notify the jurisdiction prior to the start of any repairs

b) Write a detailed procedure for the repair organisations use in repairing the crack

c) Consult with the piping engineer to identify and correct the cause of the crack.

d) Consult with a metallurgist prior to writing a procedure to repair the crack.

118) A full encirclement welded split sleeve designed by a piping engineer may be applied over a damaged or corroded area of a pipe. This is considered a temporary repair. When should a permanent repair be made?

a) If the owner-user designates the welded split sleeve as permanent, it may remain.

b) A full encirclement welded split sleeve is permanent if okayed by the inspector.

c) A full encirclement welded split sleeve is considered a permanent repair.

d) A permanent repair must be made at the next available maintenance opportunity.

119) What type of defect, corrosion, pitting and / or discontinuity should not be repaired by a full encirclement welded split sleeve?

a) A longitudinal check

b) A circumferential crack

c) Pits that are one half through wall

d) General corrosion in the longitudinal direction.

120) If a repair area is localised (for example, pitting or pin-holes) and the specified minimum yield strength (SMYS) of the pipe is not more than __________ psi, a temporary repair may be made by fillet welding a properly designed plate patch over the pitted area:

a) 30,000 psi

b) 55,000 psi

c) 40,000 psi

d) 36,000 psi

121) Insert patches (flush patches may be used to repair damaged or corroded areas of pipe if several requirements are met. One of these is that an insert patch (flush patch) may be of any shape but it shall have rounded corners with __________ minimum radii.

a) 0.375"

b) 0.50"

c) 0.75"

d) 1"

122) An inspector finds a pin-hole leak in a weld during an on-stream inspection of a  piping system. A permissible temporary repair is :-

a) The use of plastic steel to seal off the leak

b) Driving a wooden plug into the hole

c) Screwing a self tapping screw into the hole

d) The installation of a properly designed and fabricated bolted leak clamp.

123) Temporary leak sealing and leak dissipating devices shall be removed and the pipe restored to original integrity:

a) As soon as the piping system can be safely removed from service

b) At a turnaround or other appropriate time

c) When the leak seal and leak dissipating device ceases to work

d) As soon as possible – must be done on a safe, emergency shut-down basis

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