API 653 Recertification exam
questions with answers
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? -
CORRECT ANSWER>>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: - CORRECT ANSWER>>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: -
CORRECT ANSWER>>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? - CORRECT ANSWER>>20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate
of steel in a wet environment. - CORRECT ANSWER>>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: - CORRECT ANSWER>>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: -
CORRECT ANSWER>>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? - CORRECT
ANSWER>>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? - CORRECT ANSWER>>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? - CORRECT ANSWER>>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: -
CORRECT ANSWER>>The as built standard
questions with answers
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? -
CORRECT ANSWER>>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: - CORRECT ANSWER>>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: -
CORRECT ANSWER>>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? - CORRECT ANSWER>>20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate
of steel in a wet environment. - CORRECT ANSWER>>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: - CORRECT ANSWER>>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: -
CORRECT ANSWER>>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? - CORRECT
ANSWER>>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? - CORRECT ANSWER>>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? - CORRECT ANSWER>>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: -
CORRECT ANSWER>>The as built standard
