API-570 Closed Book
The first 2 digits on a SMAW electrode represents the:
A. characteristics of flux covering the electrode.
B. electrode manufacturer's ID.
C. welding positions the rod can be used.
D. tensile strength of the rod. - answerD. tensile strength of the rod.
What inspection tool can be used to measure the weld prep angle?
A. Bridge Cam gauge
B. Der Bleistift gauge
C. Hi-Lo gauge
D. Newman gauge
E. Skew gauge - answerA. Bridge Cam gauge
A carbon steel vessel in caustic service has a temperature excursion up to 425 °F. No
PWHT has been performed. What type of deterioration could be expected?
A. Intergranular corrosion
B. Stress corrosion cracking
C. Galvanic corrosion
D. High temperature embrittlement - answerB. Stress corrosion cracking
Which of the following is not an acceptable method for establishing the piping corrosion
rate
in a new service?
A. Owner's experience
B. Inspect the piping system within 3 months of operation
C. Corrosion data from trade journal
D. Corrosion data from phone discussion with a consultant corrosion engineer -
answerD. Corrosion data from phone discussion with a consultant corrosion engineer
Which of the following can cause a pressure relief valve to chatter? This may have more
than
one correct answer, please select all answers that apply.
A. Lengthy pipe to relief device inlet
B. Oversized relief outlet piping
C. Obstructions in the inlet piping
D. Significantly under-sized relief device
E. Significantly over-sized relief device - answer
For welded pipe, the normal thickness under-tolerance is:
A. -0.00 inch.
B. -0.01 inch.
,C. -0.0125 inch.
D. -12.5% of the specified wall thickness. - answerB. -0.01 inch.
When qualifying a weld procedure, the essential variables must:
A. be recorded on only the PQR.
B. be recorded on only the WPS.
C. be recorded on both the WPS and PQR.
D. be recorded on both the WPS and WPQ. - answerC. be recorded on both the WPS
and PQR.
What is the minimum# of RT exposures needed to RT a 2 NPS weld? (No access to
inside)
A. 1
B. 2
C. 3
D. 4 - answerB. 2
When performing preheat to a 0.500" thick pipe, the preheat zone must extend:
A. 1" beyond the start of the weld.
B. 3" all directions from the start of the weld.
C. 6" all directions from the start of the weld.
D. 12" all directions from the start of the weld. - answerB. 3" all directions from the start
of the weld.
A propane piping pipe in the tank farm area should be classified as:
A. Class 1.
B. Class 2.
C. Class 3.
D. Category D - answerA. Class 1.
According to ASME B16.5 flanges made from plate materials can only be used for:
A. blind flanges.
B. Class 150 flanges.
C. Class 150 and 300 flanges.
D. threaded flanges. - answerA. blind flanges.
The corrosiveness of soils can be determined by measuring the soil's:
A. plasticity.
B. resistivity.
C. modulus of elasticity.
D. galvanic potential. - answerB. resistivity.
The flash point of a hydrocarbon is the temperature at which:
A. vapors are first emitted.
B. enough vapors are emitted to support combustion.
C. boiling occurs.
, D. auto-ignition occurs. - answerB. enough vapors are emitted to support combustion.
Which of the following is a required marking on ASME B16.5 flanges?
A. Bolt material
B. Nominal pipe size
C. Outside diameter of flange
D. Temperature rating - answerB. Nominal pipe size
During welding, non-essential variables:
A. must be recorded only on the WPS and must be followed by the welder.
B. must be recorded on the WPS and are optional for the welder.
C. must be recorded on both the WPS and PQR.
D. are optional on both the WPS and PQR. - answerA. must be recorded only on the
WPS and must be followed by the welder.
MIC occurring in 300-series stainless steel usually forms :
A. cup-shaped pits.
B. cone-shaped pits.
C. sub-surface cavities.
D. uniform wall loss. - answerC. sub-surface cavities.
Which of the following piping systems may be excluded from the requirements of API
570?
A. 4 NPS steam line
B. 6 NPS fuel gas line
C. 4 NPS crude line operating at 100 °F
D. 3 NPS catalyst line - answerA. 4 NPS steam line
Graphitization of carbon steels begins to occur when metal temperatures exceed:
A. 200 °F.
B. 800 °F.
C. 1000°F.
D. 1100 °F. - answerB. 800 °F.
Which of the following often causes a pressure relief device's spring to fail by stress
corrosion cracking?
A. Carbon
B. Hydrogen sulfide
C. Pyrophoric iron
D. Sulfur - answerB. Hydrogen sulfide
During a pipe repair, preheat is substituted for the required postweld heat treatment.
What
is the minimum acceptable preheat temperature?
A. 150 °F
B. 200 °F
The first 2 digits on a SMAW electrode represents the:
A. characteristics of flux covering the electrode.
B. electrode manufacturer's ID.
C. welding positions the rod can be used.
D. tensile strength of the rod. - answerD. tensile strength of the rod.
What inspection tool can be used to measure the weld prep angle?
A. Bridge Cam gauge
B. Der Bleistift gauge
C. Hi-Lo gauge
D. Newman gauge
E. Skew gauge - answerA. Bridge Cam gauge
A carbon steel vessel in caustic service has a temperature excursion up to 425 °F. No
PWHT has been performed. What type of deterioration could be expected?
A. Intergranular corrosion
B. Stress corrosion cracking
C. Galvanic corrosion
D. High temperature embrittlement - answerB. Stress corrosion cracking
Which of the following is not an acceptable method for establishing the piping corrosion
rate
in a new service?
A. Owner's experience
B. Inspect the piping system within 3 months of operation
C. Corrosion data from trade journal
D. Corrosion data from phone discussion with a consultant corrosion engineer -
answerD. Corrosion data from phone discussion with a consultant corrosion engineer
Which of the following can cause a pressure relief valve to chatter? This may have more
than
one correct answer, please select all answers that apply.
A. Lengthy pipe to relief device inlet
B. Oversized relief outlet piping
C. Obstructions in the inlet piping
D. Significantly under-sized relief device
E. Significantly over-sized relief device - answer
For welded pipe, the normal thickness under-tolerance is:
A. -0.00 inch.
B. -0.01 inch.
,C. -0.0125 inch.
D. -12.5% of the specified wall thickness. - answerB. -0.01 inch.
When qualifying a weld procedure, the essential variables must:
A. be recorded on only the PQR.
B. be recorded on only the WPS.
C. be recorded on both the WPS and PQR.
D. be recorded on both the WPS and WPQ. - answerC. be recorded on both the WPS
and PQR.
What is the minimum# of RT exposures needed to RT a 2 NPS weld? (No access to
inside)
A. 1
B. 2
C. 3
D. 4 - answerB. 2
When performing preheat to a 0.500" thick pipe, the preheat zone must extend:
A. 1" beyond the start of the weld.
B. 3" all directions from the start of the weld.
C. 6" all directions from the start of the weld.
D. 12" all directions from the start of the weld. - answerB. 3" all directions from the start
of the weld.
A propane piping pipe in the tank farm area should be classified as:
A. Class 1.
B. Class 2.
C. Class 3.
D. Category D - answerA. Class 1.
According to ASME B16.5 flanges made from plate materials can only be used for:
A. blind flanges.
B. Class 150 flanges.
C. Class 150 and 300 flanges.
D. threaded flanges. - answerA. blind flanges.
The corrosiveness of soils can be determined by measuring the soil's:
A. plasticity.
B. resistivity.
C. modulus of elasticity.
D. galvanic potential. - answerB. resistivity.
The flash point of a hydrocarbon is the temperature at which:
A. vapors are first emitted.
B. enough vapors are emitted to support combustion.
C. boiling occurs.
, D. auto-ignition occurs. - answerB. enough vapors are emitted to support combustion.
Which of the following is a required marking on ASME B16.5 flanges?
A. Bolt material
B. Nominal pipe size
C. Outside diameter of flange
D. Temperature rating - answerB. Nominal pipe size
During welding, non-essential variables:
A. must be recorded only on the WPS and must be followed by the welder.
B. must be recorded on the WPS and are optional for the welder.
C. must be recorded on both the WPS and PQR.
D. are optional on both the WPS and PQR. - answerA. must be recorded only on the
WPS and must be followed by the welder.
MIC occurring in 300-series stainless steel usually forms :
A. cup-shaped pits.
B. cone-shaped pits.
C. sub-surface cavities.
D. uniform wall loss. - answerC. sub-surface cavities.
Which of the following piping systems may be excluded from the requirements of API
570?
A. 4 NPS steam line
B. 6 NPS fuel gas line
C. 4 NPS crude line operating at 100 °F
D. 3 NPS catalyst line - answerA. 4 NPS steam line
Graphitization of carbon steels begins to occur when metal temperatures exceed:
A. 200 °F.
B. 800 °F.
C. 1000°F.
D. 1100 °F. - answerB. 800 °F.
Which of the following often causes a pressure relief device's spring to fail by stress
corrosion cracking?
A. Carbon
B. Hydrogen sulfide
C. Pyrophoric iron
D. Sulfur - answerB. Hydrogen sulfide
During a pipe repair, preheat is substituted for the required postweld heat treatment.
What
is the minimum acceptable preheat temperature?
A. 150 °F
B. 200 °F
