API 653 RECERTIFICATION EXAM –ACTUAL EXAM-LATEST UPDATE 2025-
COMPLETE QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS |
RATED 100% CORRECT!! GUARANTEED PASS!! ALREADY GRADED A+
Per API 653 , with of the following is required when converting an existing tank to operation at
elevated temperatures when it was not originally designed and constructed to API 650, Appendix
M? - (answers)The Shell to bottom joint shall be evaluated for fatigue
When removing an existing tank bottom, all arc-gouged areas of the tank shell-to-bottom shall
be: - (answers)examined using magnetic particle inspection, and defective areas repaired and re-
examined.
If RBI assessment has been conducted and the tank has cathodic protection plus a thin-film
lining, the maximum inspection interval is: - (answers)14 years
When installing a new nozzle in a tank of unknow material, what stress value should be used to
calculate the required shell thickness and reinforcement? - (answers)20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a wet
environment. - (answers)may double with every 18 °F increase in temperature above 77 °F.
Grade 350W/50W is acceptable for tank plate to a maximum thickness of: - (answers)45mm
(1.75in) if fully killed and made to a fine grain practice.
If an RBI assessment has been conducted and the tank has a release prevention barrier, the
maximum initial inspection interval is: - (answers)25 years
As an alternative to the procedures in API 653 for the evaluation of any thinning of the tank shell
below minimum required wall thickness may be evaluated for continued service using which
code? - (answers)API RP 579, section 4, 5 or 6.
When welding on a tank shell constructed of Group I steel that is greater than 1.5 inches thick
below what minimum metal temperature ?preheat? - (answers)200°F
, When evaluated an existing temperature services tank, which has a successful service history of
operation but was not originally designed and constructed to the requirement of API 650,
appendix M, which condition temperature has to be used? - (answers)The max Operating
Temperature shall not exceed the temperature at which the tank has successfully operated in the
pass.
Flange material used for tank repair and alteration shall meet the minimum requirements for the
material specifications according to: - (answers)The as built standard
which is an advantage of thick film UN-REINFORCED linings ? - (answers)Fast curing and can
be put back in service after 24 hours at normal ambient temperature.
The perimeter welds on a welded-on patch plate in the critical zone should be ? - (answers)Two-
pass and examined visually and by either MP or PT.
Existent welds on a tank shell are found to e closer than allowed by API 650 (7th Edition). Under
what conditions can these welds be considered to be acceptable for continued service? -
(answers)Examined by MP inspection with no rejectable indications.
The requirements of which standard shall be considered in the evaluation and alteration to the
tank roof and roof-to-shell junction ? - (answers)Current applicable standard
Welding procedure for ladder and platform assemblies, but not their attachment to the tank? -
(answers)Shall comply with either AWS D1.1, AWS D1.6 or ASME Code Section IX.
In floating roof tanks, shell nozzles without internal piping within operating range of the floating
roof shall be supplied? - (answers)Flush on the inside of the tank.
The attachment welds of new lap-welded shell patch plates shall be examined by: -
(answers)Visually and by either MP or PT
COMPLETE QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS |
RATED 100% CORRECT!! GUARANTEED PASS!! ALREADY GRADED A+
Per API 653 , with of the following is required when converting an existing tank to operation at
elevated temperatures when it was not originally designed and constructed to API 650, Appendix
M? - (answers)The Shell to bottom joint shall be evaluated for fatigue
When removing an existing tank bottom, all arc-gouged areas of the tank shell-to-bottom shall
be: - (answers)examined using magnetic particle inspection, and defective areas repaired and re-
examined.
If RBI assessment has been conducted and the tank has cathodic protection plus a thin-film
lining, the maximum inspection interval is: - (answers)14 years
When installing a new nozzle in a tank of unknow material, what stress value should be used to
calculate the required shell thickness and reinforcement? - (answers)20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a wet
environment. - (answers)may double with every 18 °F increase in temperature above 77 °F.
Grade 350W/50W is acceptable for tank plate to a maximum thickness of: - (answers)45mm
(1.75in) if fully killed and made to a fine grain practice.
If an RBI assessment has been conducted and the tank has a release prevention barrier, the
maximum initial inspection interval is: - (answers)25 years
As an alternative to the procedures in API 653 for the evaluation of any thinning of the tank shell
below minimum required wall thickness may be evaluated for continued service using which
code? - (answers)API RP 579, section 4, 5 or 6.
When welding on a tank shell constructed of Group I steel that is greater than 1.5 inches thick
below what minimum metal temperature ?preheat? - (answers)200°F
, When evaluated an existing temperature services tank, which has a successful service history of
operation but was not originally designed and constructed to the requirement of API 650,
appendix M, which condition temperature has to be used? - (answers)The max Operating
Temperature shall not exceed the temperature at which the tank has successfully operated in the
pass.
Flange material used for tank repair and alteration shall meet the minimum requirements for the
material specifications according to: - (answers)The as built standard
which is an advantage of thick film UN-REINFORCED linings ? - (answers)Fast curing and can
be put back in service after 24 hours at normal ambient temperature.
The perimeter welds on a welded-on patch plate in the critical zone should be ? - (answers)Two-
pass and examined visually and by either MP or PT.
Existent welds on a tank shell are found to e closer than allowed by API 650 (7th Edition). Under
what conditions can these welds be considered to be acceptable for continued service? -
(answers)Examined by MP inspection with no rejectable indications.
The requirements of which standard shall be considered in the evaluation and alteration to the
tank roof and roof-to-shell junction ? - (answers)Current applicable standard
Welding procedure for ladder and platform assemblies, but not their attachment to the tank? -
(answers)Shall comply with either AWS D1.1, AWS D1.6 or ASME Code Section IX.
In floating roof tanks, shell nozzles without internal piping within operating range of the floating
roof shall be supplied? - (answers)Flush on the inside of the tank.
The attachment welds of new lap-welded shell patch plates shall be examined by: -
(answers)Visually and by either MP or PT
