©JUSTTRACY EXAM SOLUTIONS
12/11/2024 11:11AM
API 653 Modified Exam Questions And
Improved Answers
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 - answers✔✔0.1 inch reference
table 4.4 API 653
when a full hydrostatic test is required, it shall be held for - answers✔✔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 - answers✔✔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 - answers✔✔one : reference 12.2.16 .1 API 653
how much time do you need to keep the radiographs of a reconstructed tank - answers✔✔1
year reference 13.2.3 API 653
who should conduct visual inspection and review and NDE results? - answers✔✔the
authorized inspector
how much time should the operator keep the cathodic protection records - answers✔✔5 years
minimum diagnostic length of a radiograph is - answers✔✔6 inches
the total metal lost / the period of time over which the metal loss occurred is the -
answers✔✔corrosion rate
, ©JUSTTRACY EXAM SOLUTIONS
12/11/2024 11:11AM
the presence of rock under the steel bottom of an AST would have what effect -
answers✔✔promote severe Underside corrosion
when do you use thin-film linings - answers✔✔when the tank is new or has light corrosion
a formal visual external inspection by an authorized inspector shall be made - answers✔✔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 - answers✔✔a National Standard
a welder deposits more metal than Allowed by the WPS what should be done -
answers✔✔re-qualify the welder
what is the maximum critical length for plate thickness determination - answers✔✔40 inches
when is it necessary for a hydrostatic test on a reconstructed tank - answers✔✔always
between thin film and thick film Linings which lining is best for crude oil tank that operates
at 190 degrees F - answers✔✔thin film
what is the maximum spacing for MT prods - answers✔✔8 inches
what is the height of the lead symbol B that shall be attached to the back of each film holder
during each exposure to determine if Backscatter radiation is exposing the film -
answers✔✔1/2 inch
any work on a tank that changes its physical dimensions or configuration is called an -
answers✔✔alteration
12/11/2024 11:11AM
API 653 Modified Exam Questions And
Improved Answers
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 - answers✔✔0.1 inch reference
table 4.4 API 653
when a full hydrostatic test is required, it shall be held for - answers✔✔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 - answers✔✔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 - answers✔✔one : reference 12.2.16 .1 API 653
how much time do you need to keep the radiographs of a reconstructed tank - answers✔✔1
year reference 13.2.3 API 653
who should conduct visual inspection and review and NDE results? - answers✔✔the
authorized inspector
how much time should the operator keep the cathodic protection records - answers✔✔5 years
minimum diagnostic length of a radiograph is - answers✔✔6 inches
the total metal lost / the period of time over which the metal loss occurred is the -
answers✔✔corrosion rate
, ©JUSTTRACY EXAM SOLUTIONS
12/11/2024 11:11AM
the presence of rock under the steel bottom of an AST would have what effect -
answers✔✔promote severe Underside corrosion
when do you use thin-film linings - answers✔✔when the tank is new or has light corrosion
a formal visual external inspection by an authorized inspector shall be made - answers✔✔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 - answers✔✔a National Standard
a welder deposits more metal than Allowed by the WPS what should be done -
answers✔✔re-qualify the welder
what is the maximum critical length for plate thickness determination - answers✔✔40 inches
when is it necessary for a hydrostatic test on a reconstructed tank - answers✔✔always
between thin film and thick film Linings which lining is best for crude oil tank that operates
at 190 degrees F - answers✔✔thin film
what is the maximum spacing for MT prods - answers✔✔8 inches
what is the height of the lead symbol B that shall be attached to the back of each film holder
during each exposure to determine if Backscatter radiation is exposing the film -
answers✔✔1/2 inch
any work on a tank that changes its physical dimensions or configuration is called an -
answers✔✔alteration
