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API 635 CERTIFICATION EXAM NEWEST REAL EXAM 250
QUESTIONS AND CORRECT VERIFIED ANSWERS
Repair plates for lapped patch repairs may square or rectangular
in shape. These plates must be provided with a corner radius of at
least what dimension?
a) They shall be rounded to a minimum radius of 1 inch
b) They shall be rounded to a minimum radius of 2 inches
c) They shall be rounded to a minimum radius of 3 inches
d) They shall be rounded to a minimum radius of 4 inches -
ANSWER-B
The maximum dimension of the lapped patch repair plate
vertically and horizontally shall not exceed:
a) 24 inches vertically and 36 inches horizontally
b) 36 inches vertically and 48 inches horizontally
c) 48 inches vertically and 72 inches horizontally
d) There are no maximum dimensions - ANSWER-D
The minimum dimension for a replacement shall plate shall
be_______ inches or __________ thickness of the replacement plate
whichever is_______.
a) 12, 12, greater
b) 12, 12, lesser
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c) 18, 18, greater
d) 18, 18, lesser - ANSWER-A
Unless an entire shell plate is replaced, the replacement plate
may be circular, oblong, square or rectangular provide the
corners are
a) Provided with a radius of at least 1 inch
b) Provided with a radius of at least 3% of the short dimension of
the plate
c) Provided with a radius of at least 3 inches
d) Provided with rounded corners - ANSWER-D
Prior to welding the new vertical joints, the existing horizontal
joints shall be cut for a minimum distance of _______ inches
beyond the new vertical joints.
a) Six
b) Eight
c) Twelve
d) Sixteen - ANSWER-C
Vertical joints shall be welded before the horizontal joints.
a) True
b) False - ANSWER-A
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For existing shell plates over ½ " thick, the outer edge of the butt
weld, attaching the replacement shell plate shall be at least
_______ times the weld thickness or _______ inches whichever is
greater from the outer edge of any existing butt-welded shell
joints.
a) 12, 10
b) 10, 12
c) 8, 10
d) 10, 8 - ANSWER-C
For existing shell plates ½ " thick and less, the outer edge of the
butt weld, attaching the replacement shell plate may be reduced
to _______ inches from the outer edge of vertical joints or
_______inches from the outer edge of horizontal joints.
a) 10, 8
b) 9, 6
c) 6, 9
d) 6, 3 - ANSWER-D
For existing shell plates over 1/2" thick, the outer edge of the butt
weld, attaching the replacement shell plate shall be at least
_______ times the weld size or _______ inches, whichever is greater,
from the edge (toe) of the fillet weld attaching the bottom shell
course to the bottom. This rule does not apply if the replacement
shell plate extends to and intersects with the bottom-to-shell joint
at approximately _______ degrees.
a) 8, 10, 45
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b) 8, 10, 90
c) 8, 10, 60
d) There are no exceptions - ANSWER-B
The edge of any vertical weld joint attaching a replacement plate
shall be at least how far from the edge of the weld joint in the
annular plate ring or sketch plate?
a) Eight inches
b) Ten inches
c) Twelve inches
d) Six inches - ANSWER-C
Lapped patch shell repairs are an acceptable form of repair for
butt-welded, lap-welded, and riveted tank shell only when
specified by:
a) The Authorized Inspector
b) Repair organization
c) The insurance company
d) The owner/operator - ANSWER-D
Lapped patch shell repairs are not permitted on shell courses
exceeding what thickness?
a) ½ inch
b) ¾ inch
c) 1 inch
API 635 CERTIFICATION EXAM NEWEST REAL EXAM 250
QUESTIONS AND CORRECT VERIFIED ANSWERS
Repair plates for lapped patch repairs may square or rectangular
in shape. These plates must be provided with a corner radius of at
least what dimension?
a) They shall be rounded to a minimum radius of 1 inch
b) They shall be rounded to a minimum radius of 2 inches
c) They shall be rounded to a minimum radius of 3 inches
d) They shall be rounded to a minimum radius of 4 inches -
ANSWER-B
The maximum dimension of the lapped patch repair plate
vertically and horizontally shall not exceed:
a) 24 inches vertically and 36 inches horizontally
b) 36 inches vertically and 48 inches horizontally
c) 48 inches vertically and 72 inches horizontally
d) There are no maximum dimensions - ANSWER-D
The minimum dimension for a replacement shall plate shall
be_______ inches or __________ thickness of the replacement plate
whichever is_______.
a) 12, 12, greater
b) 12, 12, lesser
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c) 18, 18, greater
d) 18, 18, lesser - ANSWER-A
Unless an entire shell plate is replaced, the replacement plate
may be circular, oblong, square or rectangular provide the
corners are
a) Provided with a radius of at least 1 inch
b) Provided with a radius of at least 3% of the short dimension of
the plate
c) Provided with a radius of at least 3 inches
d) Provided with rounded corners - ANSWER-D
Prior to welding the new vertical joints, the existing horizontal
joints shall be cut for a minimum distance of _______ inches
beyond the new vertical joints.
a) Six
b) Eight
c) Twelve
d) Sixteen - ANSWER-C
Vertical joints shall be welded before the horizontal joints.
a) True
b) False - ANSWER-A
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For existing shell plates over ½ " thick, the outer edge of the butt
weld, attaching the replacement shell plate shall be at least
_______ times the weld thickness or _______ inches whichever is
greater from the outer edge of any existing butt-welded shell
joints.
a) 12, 10
b) 10, 12
c) 8, 10
d) 10, 8 - ANSWER-C
For existing shell plates ½ " thick and less, the outer edge of the
butt weld, attaching the replacement shell plate may be reduced
to _______ inches from the outer edge of vertical joints or
_______inches from the outer edge of horizontal joints.
a) 10, 8
b) 9, 6
c) 6, 9
d) 6, 3 - ANSWER-D
For existing shell plates over 1/2" thick, the outer edge of the butt
weld, attaching the replacement shell plate shall be at least
_______ times the weld size or _______ inches, whichever is greater,
from the edge (toe) of the fillet weld attaching the bottom shell
course to the bottom. This rule does not apply if the replacement
shell plate extends to and intersects with the bottom-to-shell joint
at approximately _______ degrees.
a) 8, 10, 45
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b) 8, 10, 90
c) 8, 10, 60
d) There are no exceptions - ANSWER-B
The edge of any vertical weld joint attaching a replacement plate
shall be at least how far from the edge of the weld joint in the
annular plate ring or sketch plate?
a) Eight inches
b) Ten inches
c) Twelve inches
d) Six inches - ANSWER-C
Lapped patch shell repairs are an acceptable form of repair for
butt-welded, lap-welded, and riveted tank shell only when
specified by:
a) The Authorized Inspector
b) Repair organization
c) The insurance company
d) The owner/operator - ANSWER-D
Lapped patch shell repairs are not permitted on shell courses
exceeding what thickness?
a) ½ inch
b) ¾ inch
c) 1 inch
