API 570 STUDY GUIDE QUESTIONS
WITH 100% CORRECT ANSWERS
When welding together piping components of different thicknesses, the thicker part
should be trimmed with a: - Answer-30 degree taper.
When performing soil-to air inspections on uncoated lines, it is recommended to
excavate the soil: - Answer-6-12 inches.
When performing preheat prior to welding or PWHT, the preheat zone and/or PWHT
must extend how far beyond the edge of the weld? - Answer-1 inch
Flange bolts are unacceptable if the bolt threads do not extend: - Answer-inside the nut
within 1 thread of the nut face
Carbon steel materials are most likely to be incorrectly substituted in: - Answer-a
chrome steel piping system.
Per B31.3 how much of the fabrication should be visually examined for a pipe in severe
cyclic service: - Answer-100 %
When calibrating a UT instrument, that has a delay line with single element unit, use: -
Answer-At least 2 test blocks with thicknesses near the max and min to be examined.
During pipe repairs, which welding discontinuity is always unacceptable? - Answer-
Cracks and Inadequate fusion
What do you call a groove in the parent metal at the toe of a weld? - Answer-undercut
The RT procedure used for a pipe repair must conform to the requirements of: -
Answer-ASME Section 5
According to B31.3, a welder's qualification records from a previous employer can: -
Answer-Be accepted if the inspector approves
What is the minimum holding time for all pressure tests on piping? - Answer-10 mins
When a relief device or valve is removed for repair, the inspector should: - Answer-
inspect the inside of the inlet and outlet piping where the valve was removed.
, Thickness measurements are suggested at pipe fittings since: - Answer-directional
changes generally create increased turbulence and corrosion.
A combination of corrosion and erosion results in greater metal loss than would be
expected by either corrosion or erosion alone. What three areas should be inspected for
this type of deterioration? - Answer-Downstream of control valves, downstream of pump
discharges, and downstream of orifices.
API 574 7.4.7 (a)(b)(c)
When making repairs and alterations to piping systems covered by API 570, what
standards must be followed? - Answer-ASME B31.3 or the Code to which the piping
system was built.
API 570 8.1.1
Who must authorize any repair or alteration work, prior to commencement of the work? -
Answer-The inspector
API 570 8.1.2
With regard to alteration work, who must the inspector consult with prior to giving
authorization? - Answer-The piping engineering
API 570 8.1.2
Can the inspector give prior general authorization for limited or routine repair activities?
- Answer-Yes, provided the inspector is satisfied with the competency of the repair
organization.
API 570 8.1.2
Who must approve all proposed methods of design, execution, materials, welding
procedures, examination, and testing? - Answer-The inspector or the piping engineer
API 570 8.1.3
Whose approval for on-stream welding is required? - Answer-The owner/user
API 570 8.1.3
In order to determine the cause and provide corrective action, welding repairs of cracks
that occurred in-service should not be attempted without consultation with: - Answer-
The piping engineer
API 570 8.1.3
What are the restrictions to repairing longitudinal cracks with the full encirclement or box
enclosure method? - Answer-The piping engineer must determine the crack will not
propagate from under the sleeve.
API 570 8.1.4.1
WITH 100% CORRECT ANSWERS
When welding together piping components of different thicknesses, the thicker part
should be trimmed with a: - Answer-30 degree taper.
When performing soil-to air inspections on uncoated lines, it is recommended to
excavate the soil: - Answer-6-12 inches.
When performing preheat prior to welding or PWHT, the preheat zone and/or PWHT
must extend how far beyond the edge of the weld? - Answer-1 inch
Flange bolts are unacceptable if the bolt threads do not extend: - Answer-inside the nut
within 1 thread of the nut face
Carbon steel materials are most likely to be incorrectly substituted in: - Answer-a
chrome steel piping system.
Per B31.3 how much of the fabrication should be visually examined for a pipe in severe
cyclic service: - Answer-100 %
When calibrating a UT instrument, that has a delay line with single element unit, use: -
Answer-At least 2 test blocks with thicknesses near the max and min to be examined.
During pipe repairs, which welding discontinuity is always unacceptable? - Answer-
Cracks and Inadequate fusion
What do you call a groove in the parent metal at the toe of a weld? - Answer-undercut
The RT procedure used for a pipe repair must conform to the requirements of: -
Answer-ASME Section 5
According to B31.3, a welder's qualification records from a previous employer can: -
Answer-Be accepted if the inspector approves
What is the minimum holding time for all pressure tests on piping? - Answer-10 mins
When a relief device or valve is removed for repair, the inspector should: - Answer-
inspect the inside of the inlet and outlet piping where the valve was removed.
, Thickness measurements are suggested at pipe fittings since: - Answer-directional
changes generally create increased turbulence and corrosion.
A combination of corrosion and erosion results in greater metal loss than would be
expected by either corrosion or erosion alone. What three areas should be inspected for
this type of deterioration? - Answer-Downstream of control valves, downstream of pump
discharges, and downstream of orifices.
API 574 7.4.7 (a)(b)(c)
When making repairs and alterations to piping systems covered by API 570, what
standards must be followed? - Answer-ASME B31.3 or the Code to which the piping
system was built.
API 570 8.1.1
Who must authorize any repair or alteration work, prior to commencement of the work? -
Answer-The inspector
API 570 8.1.2
With regard to alteration work, who must the inspector consult with prior to giving
authorization? - Answer-The piping engineering
API 570 8.1.2
Can the inspector give prior general authorization for limited or routine repair activities?
- Answer-Yes, provided the inspector is satisfied with the competency of the repair
organization.
API 570 8.1.2
Who must approve all proposed methods of design, execution, materials, welding
procedures, examination, and testing? - Answer-The inspector or the piping engineer
API 570 8.1.3
Whose approval for on-stream welding is required? - Answer-The owner/user
API 570 8.1.3
In order to determine the cause and provide corrective action, welding repairs of cracks
that occurred in-service should not be attempted without consultation with: - Answer-
The piping engineer
API 570 8.1.3
What are the restrictions to repairing longitudinal cracks with the full encirclement or box
enclosure method? - Answer-The piping engineer must determine the crack will not
propagate from under the sleeve.
API 570 8.1.4.1
