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API 635 CERTIFICATION EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 250 QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW!!
When repairing internal pitting for the extension of in-service
operating period, the repair shall be
by any of the following methods except.
a) Pit welding
b) Brazing
c) Overlay welding
d) Lap Patching - CORRECT ANSWER-B
The thickness of the bottom plate projection beyond the shell,
measured at the toe of the weld of
the outside bottom-to-shell fillet weld shall be not less than?
a) 0.25 inch
b) 0.01 inch
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c) 0.50 inch
d) 0.10 inch - CORRECT ANSWER-D
The projection of the bottom plate beyond the toe of the shell-to-
bottom weld shall be at least?
a) 0.125 inch
b) 0.250 inch
c) 0.375 inch
d) 0.500 inch - CORRECT ANSWER-C
An aboveground storage tank contains a fluid with a specific
gravity of less than one. The
thickness of the plate in the first course is 7/8". What is the
minimum thickness of the annular
plate ring, seismic loading is not a consideration, and the stress
in the first course is 27,850 pound
per square inch?
a) 0.22 inch
b) 0.31 inch
c) 0.20 inch
d) 0.23 inch - CORRECT ANSWER-B
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An aboveground storage tank contains a fluid with a specific
gravity of greater than one. The
thickness of the plate in the first course is 7/8". What is the
minimum thickness of the annular
plate ring, seismic loading is not a consideration, and the
hydrostatic test stress in the first shell
course is 27,850 pound per square inch?
a) inch
b) inch
c) inch
d) inch - CORRECT ANSWER-C
Settlement, erosion, cracking, and deterioration of concrete are
all examples of which of the
following principle modes of failure or deterioration?
a) Annular plate ring failure
b) Shell-to-bottom weld failure
c) Deterioration of walkways and roadways
d) Deterioration of foundations - CORRECT ANSWER-D
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To ensure suitability for service, what is the minimum permitted
frequency of tank foundation
inspection?
a) Annually
b) Every five years
c) Monthly
d) Periodically - CORRECT ANSWER-C
Distortion of anchor bolts and excessive cracking of concrete
structures may be indications of
what two conditions?
a) Serious foundation settlement of a tank overpressure uplift
condition
b) Inferior material used in the anchor bolts and the concrete
structure
c) Over tightening of the anchor bolts and improper mixing of
the concrete
d) The tank was struck by lightning and wind caused movement
of the tank - CORRECT ANSWER-A
Incidents of tank failure due to brittle fracture have occurred
shortly after erection during
API 635 CERTIFICATION EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 250 QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW!!
When repairing internal pitting for the extension of in-service
operating period, the repair shall be
by any of the following methods except.
a) Pit welding
b) Brazing
c) Overlay welding
d) Lap Patching - CORRECT ANSWER-B
The thickness of the bottom plate projection beyond the shell,
measured at the toe of the weld of
the outside bottom-to-shell fillet weld shall be not less than?
a) 0.25 inch
b) 0.01 inch
,2|Page
c) 0.50 inch
d) 0.10 inch - CORRECT ANSWER-D
The projection of the bottom plate beyond the toe of the shell-to-
bottom weld shall be at least?
a) 0.125 inch
b) 0.250 inch
c) 0.375 inch
d) 0.500 inch - CORRECT ANSWER-C
An aboveground storage tank contains a fluid with a specific
gravity of less than one. The
thickness of the plate in the first course is 7/8". What is the
minimum thickness of the annular
plate ring, seismic loading is not a consideration, and the stress
in the first course is 27,850 pound
per square inch?
a) 0.22 inch
b) 0.31 inch
c) 0.20 inch
d) 0.23 inch - CORRECT ANSWER-B
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An aboveground storage tank contains a fluid with a specific
gravity of greater than one. The
thickness of the plate in the first course is 7/8". What is the
minimum thickness of the annular
plate ring, seismic loading is not a consideration, and the
hydrostatic test stress in the first shell
course is 27,850 pound per square inch?
a) inch
b) inch
c) inch
d) inch - CORRECT ANSWER-C
Settlement, erosion, cracking, and deterioration of concrete are
all examples of which of the
following principle modes of failure or deterioration?
a) Annular plate ring failure
b) Shell-to-bottom weld failure
c) Deterioration of walkways and roadways
d) Deterioration of foundations - CORRECT ANSWER-D
, 4|Page
To ensure suitability for service, what is the minimum permitted
frequency of tank foundation
inspection?
a) Annually
b) Every five years
c) Monthly
d) Periodically - CORRECT ANSWER-C
Distortion of anchor bolts and excessive cracking of concrete
structures may be indications of
what two conditions?
a) Serious foundation settlement of a tank overpressure uplift
condition
b) Inferior material used in the anchor bolts and the concrete
structure
c) Over tightening of the anchor bolts and improper mixing of
the concrete
d) The tank was struck by lightning and wind caused movement
of the tank - CORRECT ANSWER-A
Incidents of tank failure due to brittle fracture have occurred
shortly after erection during
