API 653 EXAM QUESTIONS WITH
100% CORRECT ANSWERS
GUARANTEED PASS
A tank for which corrosion rates and services are known and documented is known as -
Answer-a control tank
Any work necessary to maintain or restore a tank to a condition suitable for safe
operation is called a - Answer-repair
Should you consider jacking up a tank show a major alterations/repair? - Answer-yes
An authorized___________ is representative of an organization's Integrity Department -
Answer-inspector
When the results of a tank inspection show that a change has occurred from the original
physical condition of that tank, should it be repaired? - Answer-no, and examination
shall be made for suitability of service
Ruth plates to be repaired or those with an average thickness of less than _______ in
any 100 square inches - Answer-0.09 in
Before changing the service of a tank to operation at temperatures above 200° F the
requirements of which appendix shall be considered? - Answer-appendix M of API 650
The evaluation of the existing tank shell shall be conducted by a - Answer-storage tank
engineer
when a tank shell has a corroded area with a thickness lower than allowed, there are 3
options, which are - Answer--damaged areas shall be repaired the
-allowable liquid level of the tank reduced
-tank retired
what is the minimum thickness for a tank floor plate with no means for leak detection or
secondary containment if an RBI program is not in place - Answer-0.1 inch reference
table 4.4 API 653
, When a full hydrostatic test is required, it shall be held for - Answer-24-hours reference
12.3.1 API 653
how many radiographs shall be taken in a square 2 in x 24 in but welded insert play in a
1-inch thick shell - Answer-6 total one horizontal one vertical one in each corner :
reference 12.2.1.6.2 API 653
what is the minimum number of radiographs that shall be taken on a circular but welded
insert plate in a shell 1/2 in thick - Answer-one : reference 12.2.16 .1 API 653
how much time do you need to keep the radiographs of a reconstructed tank - Answer-1
year reference 13.2.3 API 653
who should conduct visual inspection and review and NDE results? - Answer-the
authorized inspector
how much time should the operator keep the cathodic protection records - Answer-5
years
minimum diagnostic length of a radiograph is - Answer-6 inches
the total metal lost / the period of time over which the metal loss occurred is the -
Answer-corrosion rate
the presence of rock under the steel bottom of an AST would have what effect -
Answer-promote severe Underside corrosion
when do you use thin-film linings - Answer-when the tank is new or has light corrosion
a formal visual external inspection by an authorized inspector shall be made - Answer-at
least every five years or RCA / 4N years whichever is less
radiographic density shall be check by densitometer calibrated on a step wedge film
traceable to - Answer-a National Standard
a welder deposits more metal than Allowed by the WPS what should be done - Answer-
re-qualify the welder
what is the maximum critical length for plate thickness determination - Answer-40
inches
when is it necessary for a hydrostatic test on a reconstructed tank - Answer-always
between thin film and thick film Linings which lining is best for crude oil tank that
operates at 190 degrees F - Answer-thin film
100% CORRECT ANSWERS
GUARANTEED PASS
A tank for which corrosion rates and services are known and documented is known as -
Answer-a control tank
Any work necessary to maintain or restore a tank to a condition suitable for safe
operation is called a - Answer-repair
Should you consider jacking up a tank show a major alterations/repair? - Answer-yes
An authorized___________ is representative of an organization's Integrity Department -
Answer-inspector
When the results of a tank inspection show that a change has occurred from the original
physical condition of that tank, should it be repaired? - Answer-no, and examination
shall be made for suitability of service
Ruth plates to be repaired or those with an average thickness of less than _______ in
any 100 square inches - Answer-0.09 in
Before changing the service of a tank to operation at temperatures above 200° F the
requirements of which appendix shall be considered? - Answer-appendix M of API 650
The evaluation of the existing tank shell shall be conducted by a - Answer-storage tank
engineer
when a tank shell has a corroded area with a thickness lower than allowed, there are 3
options, which are - Answer--damaged areas shall be repaired the
-allowable liquid level of the tank reduced
-tank retired
what is the minimum thickness for a tank floor plate with no means for leak detection or
secondary containment if an RBI program is not in place - Answer-0.1 inch reference
table 4.4 API 653
, When a full hydrostatic test is required, it shall be held for - Answer-24-hours reference
12.3.1 API 653
how many radiographs shall be taken in a square 2 in x 24 in but welded insert play in a
1-inch thick shell - Answer-6 total one horizontal one vertical one in each corner :
reference 12.2.1.6.2 API 653
what is the minimum number of radiographs that shall be taken on a circular but welded
insert plate in a shell 1/2 in thick - Answer-one : reference 12.2.16 .1 API 653
how much time do you need to keep the radiographs of a reconstructed tank - Answer-1
year reference 13.2.3 API 653
who should conduct visual inspection and review and NDE results? - Answer-the
authorized inspector
how much time should the operator keep the cathodic protection records - Answer-5
years
minimum diagnostic length of a radiograph is - Answer-6 inches
the total metal lost / the period of time over which the metal loss occurred is the -
Answer-corrosion rate
the presence of rock under the steel bottom of an AST would have what effect -
Answer-promote severe Underside corrosion
when do you use thin-film linings - Answer-when the tank is new or has light corrosion
a formal visual external inspection by an authorized inspector shall be made - Answer-at
least every five years or RCA / 4N years whichever is less
radiographic density shall be check by densitometer calibrated on a step wedge film
traceable to - Answer-a National Standard
a welder deposits more metal than Allowed by the WPS what should be done - Answer-
re-qualify the welder
what is the maximum critical length for plate thickness determination - Answer-40
inches
when is it necessary for a hydrostatic test on a reconstructed tank - Answer-always
between thin film and thick film Linings which lining is best for crude oil tank that
operates at 190 degrees F - Answer-thin film
