API 510 Study Guide Questions With Complete Solutions
A pressure test shall be conducted after Correct Answer
Repairs, when the inspector believes one is necessary
All NDE equipment used in petrochemical facilities must
Correct Answer Have a safety rating appropriate for gaseous
environments
Alterations to Div 1&2 and repairs to Div 2 vessels require
authorization from Correct Answer Inspector and Engineer
Alternating Current Flux Leakage is useful in finding what
Correct Answer Surface-breaking cracks
Alts, major repairs, and temporary repairs require approval from
Correct Answer Inspector and Engineer
Arc blow Correct Answer A discontinuity resulting from an
arc, consisting of any localized remelted metal, heat-affected
metal, or change in surface profile of any metal object.
Arc length Correct Answer The distance from the tip of the
welding electrode to the adjacent surface of the weld pool
Areas directly above or below liquid levels in vessel containing
acidic corrodents are subject to Correct Answer Hydrogen
blistering
Authorized Inspection Agency Correct Answer Jurisdiction,
insurance company, owner/user, contract company
, Autogeneous weld Correct Answer A fusion weld made
without filler metal. (W/filler is homogeneous.)
Basic functions of SMAW electrode coating Correct Answer
Shielded gas
Prevent excessive grain growth
Slag blanket to protect weld
Sometimes provides alloy elements
Before repairs & alts are performed, all methods of design,
execution, materials, welding procedures, NDE, and testing shall
be approved from Correct Answer Engineer or Inspector
Before work is started, repairs & alts must be authorized by
Correct Answer The inspector
Brittle fractures usually occur Correct Answer During first
hydro test
Carbon or Alloy should not be welded on if carbon content is
over Correct Answer .35%
Circumferential fillet welds attaching the band to the vessel shell
are designed using a joint efficiency of Correct Answer 0.45
CS may need special preheating to avoid cracking if carbon
content is over Correct Answer .30%
Damage mech that creates micro-fissuring which leads to
macro-cracking Correct Answer Creep
A pressure test shall be conducted after Correct Answer
Repairs, when the inspector believes one is necessary
All NDE equipment used in petrochemical facilities must
Correct Answer Have a safety rating appropriate for gaseous
environments
Alterations to Div 1&2 and repairs to Div 2 vessels require
authorization from Correct Answer Inspector and Engineer
Alternating Current Flux Leakage is useful in finding what
Correct Answer Surface-breaking cracks
Alts, major repairs, and temporary repairs require approval from
Correct Answer Inspector and Engineer
Arc blow Correct Answer A discontinuity resulting from an
arc, consisting of any localized remelted metal, heat-affected
metal, or change in surface profile of any metal object.
Arc length Correct Answer The distance from the tip of the
welding electrode to the adjacent surface of the weld pool
Areas directly above or below liquid levels in vessel containing
acidic corrodents are subject to Correct Answer Hydrogen
blistering
Authorized Inspection Agency Correct Answer Jurisdiction,
insurance company, owner/user, contract company
, Autogeneous weld Correct Answer A fusion weld made
without filler metal. (W/filler is homogeneous.)
Basic functions of SMAW electrode coating Correct Answer
Shielded gas
Prevent excessive grain growth
Slag blanket to protect weld
Sometimes provides alloy elements
Before repairs & alts are performed, all methods of design,
execution, materials, welding procedures, NDE, and testing shall
be approved from Correct Answer Engineer or Inspector
Before work is started, repairs & alts must be authorized by
Correct Answer The inspector
Brittle fractures usually occur Correct Answer During first
hydro test
Carbon or Alloy should not be welded on if carbon content is
over Correct Answer .35%
Circumferential fillet welds attaching the band to the vessel shell
are designed using a joint efficiency of Correct Answer 0.45
CS may need special preheating to avoid cracking if carbon
content is over Correct Answer .30%
Damage mech that creates micro-fissuring which leads to
macro-cracking Correct Answer Creep
