API 570 Close Book Combined Exam Set Questions With Revised Correct Detailed Answers
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Course
API 570
Institution
API 570
API 570 Close Book Combined
Exam Set Questions With Revised
Correct Detailed Answers
1) Welder qualification tests conducted by one manufacturer:
A) Qualifies a welder or welding operator to do work for another manufacturer
B) qualifies a welder or welding operator to do work for another ...
API 570 Close Book Combined
Exam Set Questions With Revised
Correct Detailed Answers
1) Welder qualification tests conducted by one manufacturer:
A) Qualifies a welder or welding operator to do work for another manufacturer
B) qualifies a welder or welding operator to do work for another manufacturer
provided both manufacturer are working in the dame tank farm
C) Shall not qualify a welder or welding operator to do work for another
manufacturer
D)Shall not qualify a welder or welding operator to do work for another
manufacturer unless the welding procedures are identical - ANSWER C
2) External measurements for tank settlement shall be taken at pints having a
maximum spacing of _____ around the circumference
A) 24 feet
B) 28 feet
C) 32 feet
D) 36 feet - ANSWER B
3) If more extensive repairs are required within the "Critical Zone" than those
listed in API 653, what must be done with the bottom plate?
A) As long as the repairs do not involve the bottom plate, nothing needs to be
done
B) the bottom plate welded to the shell shall be cut out and a new plate installed
,C) The bottom plate shall be subjected to suitable nondestructive examination to
ensure it has not be adversely affected by the repair
D) The bottom plate and the bottom shell course shall be replaced as an assembly
- ANSWER B
4) The addition or replacement of shell penetrations shall be in accordance with
A) The As-built standard
B) API 650
C) API 650 and API 510
D) API 650 and ASME Section VIII, Div 2 - ANSWER B
5) As a minimum, what safety rules and regulations should be reviewed?
A) OSHA
B) MIOSH
C) Site
D) Local jurisdiction - ANSWER C
6) Atmospheric corrosion can occur on all external parts of a tank. During your
inspection, you notice considerable damage to the protective coating and
accelerated corrosion rates. What would you suspect the cause to be?
A) Sulfurous, acidic, marine atmosphere
B) Hydrogen and oxygen rich atmosphere
C) Nitrogen and Oxygen rich atmosphere
D) Carbon dioxide and nitrogen rich atmoshere - ANSWER A
,7) Why is inspection for crack-like flaws of the lower shell-to-sketch-plate weld
critical?
A) This area is more susceptible to cracking because it is subjected to internal and
external atmosphere
B) This area is critical because in relatively large or hot tanks, it has more potential
for cracking
C) This area is critical because in relatively large or hot tanks, it has more potential
for corrosion
D) this area is critical because in relatively small or cold tanks, it has more
potential for cracking. - ANSWER B
8) Lapped patch shell repairs are not permitted on shell courses exceeding what
thickness?
A) 1/2 inch
B) 3/4 inch
C) 1 inch
D) 1-1/4 inch - ANSWER A
9) 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
10) The preferred methods of detecting Chloride Stress Corrosion Cracking are:
, A) Liquid Penetrant and Phase analysis Eddy Current
B) Liquid Penetrant and Ultrasonic Shear Wave
C) Liquid Penetrant and Radiography
D) Liquid Penetrant and Visual - ANSWER A
11) According to API 653, which of the following would not be considered a major
repair?
A) Installing a bottom penetration within 12" of the shell
B) Installing shell penetration larger that NPS 12 beneath the design liquid level
C) Removing and replacing or adding a shell plate beneath the design liquid level
where the longest dimension of the replacement plate exceeds 12"
D) Removing and replacing the entire roof of a cone roof tank - ANSWER D
12) Based on the following information, what is the calculated ciritical lenfght L?
Tank diameter 175ft. least thickness in the area of corrosion, exclusive of pits,
0.761" L=3.7√(Dt2)
A) 42.7"
B) 40"
C) 11.54"
D) 492.7" - ANSWER A
13) Replacement and new penetrations, in reconstructed tanks, shall be
designated, detailed, welded, and examined to meet what requirements?
A) The current applicable standard
B) The original standard construction
C) The requirements of the Authorized Inspector
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