API 653 RECERTIFICATION QUIZ | QUESTIONS AND ANSWERS |
VERIFIED ANSWERS (100% CORRECT) | LATEST EXAM UPDATE
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
which is an advantage of thick film UN-REINFORCED linings ? - CORRECT
ANSWER - Fast curing and can be put back in service after 24 hours at normal
ambient temperature.
VERIFIED ANSWERS (100% CORRECT) | LATEST EXAM UPDATE
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
which is an advantage of thick film UN-REINFORCED linings ? - CORRECT
ANSWER - Fast curing and can be put back in service after 24 hours at normal
ambient temperature.
