API 653 Recertification Quiz with 100% Correct Answers |
Latest Version 2024 | Expert Verified A+ Graded.
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? - 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: -
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: - 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? - Answer- 20,000 lbf/in2
What type of settlement (more than all the others) should be evaluated to ensure the structural integrity of
the shell and bottom of the tank? - Answer- Out of plane settlement (B2.2.4)
An API 653 inspector must satisfy the API criteria for education and experience. How many years
experience is required if the inspector has a high school diploma? - Answer- 3 years (D2.1.1)
After an inspector has been certified, the inspector must demonstrate knowladge if revisions to API 653
after how many years from the inpector's initial certification date? - Answer- 6 years (D.5.3)
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a wet environment. -
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: - 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: - 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? - 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? - 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? - Answer- The max Operating Temperature shall not exceed the
temperature at which the tank has successfully operated in the pass.
What steps and documentation is required by API 653 in order to exempt a major repair or alteration of a
tank from hydrostatic testing? - Answer- Engineer and owner/operator must authorize in writting
(12.3.2.2)
When tanks are recosntructed in accordence with API 653, what attachment is required to be attaced to
the tank? - Answer- A corrosion resistant metal nameplate with reconstructed data (13.1.1.1)
When should a monitoring program to determine the effects of settlement on storage tanks be initiated? -
Answer- At onstruction and continued during hydrostatic testing and operation (B1.1)
What steps should be taken if at any time the settlement of a tank is deemed to be excessive? - Answer-
Empty and re-level (B1.2)
When taking tank settlement readings internally accross the bottom of a tank (tank is OOS), what is the
maximum spacing of the points along the tank diameter? - Answer- 32ft spacing (Fig B.2)
Flange material used for tank repair and alteration shall meet the minimum requirements for the material
specifications according to: - Answer- The as built standard
which is an advantage of thick film UN-REINFORCED linings ? - Answer- Fast curing and can be put
back in service after 24 hours at normal ambient temperature.
Latest Version 2024 | Expert Verified A+ Graded.
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? - 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: -
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: - 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? - Answer- 20,000 lbf/in2
What type of settlement (more than all the others) should be evaluated to ensure the structural integrity of
the shell and bottom of the tank? - Answer- Out of plane settlement (B2.2.4)
An API 653 inspector must satisfy the API criteria for education and experience. How many years
experience is required if the inspector has a high school diploma? - Answer- 3 years (D2.1.1)
After an inspector has been certified, the inspector must demonstrate knowladge if revisions to API 653
after how many years from the inpector's initial certification date? - Answer- 6 years (D.5.3)
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a wet environment. -
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: - 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: - 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? - 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? - 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? - Answer- The max Operating Temperature shall not exceed the
temperature at which the tank has successfully operated in the pass.
What steps and documentation is required by API 653 in order to exempt a major repair or alteration of a
tank from hydrostatic testing? - Answer- Engineer and owner/operator must authorize in writting
(12.3.2.2)
When tanks are recosntructed in accordence with API 653, what attachment is required to be attaced to
the tank? - Answer- A corrosion resistant metal nameplate with reconstructed data (13.1.1.1)
When should a monitoring program to determine the effects of settlement on storage tanks be initiated? -
Answer- At onstruction and continued during hydrostatic testing and operation (B1.1)
What steps should be taken if at any time the settlement of a tank is deemed to be excessive? - Answer-
Empty and re-level (B1.2)
When taking tank settlement readings internally accross the bottom of a tank (tank is OOS), what is the
maximum spacing of the points along the tank diameter? - Answer- 32ft spacing (Fig B.2)
Flange material used for tank repair and alteration shall meet the minimum requirements for the material
specifications according to: - Answer- The as built standard
which is an advantage of thick film UN-REINFORCED linings ? - Answer- Fast curing and can be put
back in service after 24 hours at normal ambient temperature.
