API 653 Storage Tank Inspection Certification In
Service Steel Tanks API 650 API 12C Standards
Tank Integrity Assessment Corrosion Rate
Calculations Shell Thickness Evaluation Pitting
Corrosion Foundation Settlement Bottom Plate
Requirements High Temperature Service Stress
Analysis Authorized Inspector Roles Repair and
Alteration Guidelines AST Inspection Codes Exam
Questions and Answers Complete Study Guide
Latest Updated 2026 Graded A+
API publications necessarily address problems of what type?
Problems of a general nature. (Special notes section)
API Standard 653 covers in service steel tanks built to what standards?
This standard covers steel storage tanks built to API 650 and its predecessor API 12C. (1.1.1)
What API Standard always governs for tanks that have been placed in service?
In the case of apparent conflicts between the requirements of this standard and API 650 or its
predecessor API 12C, API 653 shall govern for tanks that have been placed in service. (1.1.2)
, API Standard 653 employs the design principles of what standard?
This standard employs the principles of API 650. (1.1.3)
When design and construction details are not given and are not available in the standard to
which the in service tank was originally constructed, then details that will provide a level of
integrity equal to the level provided by the current edition of which standard must be used?
The current edition of API 650 must be used. (1.1.5)
Who has the ultimate responsability for complying with the provisions of API653?
The owner/operator. (1.2)
The inspector agency of the jurisdiction in which the above ground is storage tank is operated is
called what?
Authorized inspection agency (3.3)
An employee of an authorized inspection agency certified as an AST inspector per API 653
Appendix D, is known as what?
Authorized inspector (3.4)
What is the total metal loss divided by the period of time over which the metal loss occurred?
Corrosion rate (3.9)
Service Steel Tanks API 650 API 12C Standards
Tank Integrity Assessment Corrosion Rate
Calculations Shell Thickness Evaluation Pitting
Corrosion Foundation Settlement Bottom Plate
Requirements High Temperature Service Stress
Analysis Authorized Inspector Roles Repair and
Alteration Guidelines AST Inspection Codes Exam
Questions and Answers Complete Study Guide
Latest Updated 2026 Graded A+
API publications necessarily address problems of what type?
Problems of a general nature. (Special notes section)
API Standard 653 covers in service steel tanks built to what standards?
This standard covers steel storage tanks built to API 650 and its predecessor API 12C. (1.1.1)
What API Standard always governs for tanks that have been placed in service?
In the case of apparent conflicts between the requirements of this standard and API 650 or its
predecessor API 12C, API 653 shall govern for tanks that have been placed in service. (1.1.2)
, API Standard 653 employs the design principles of what standard?
This standard employs the principles of API 650. (1.1.3)
When design and construction details are not given and are not available in the standard to
which the in service tank was originally constructed, then details that will provide a level of
integrity equal to the level provided by the current edition of which standard must be used?
The current edition of API 650 must be used. (1.1.5)
Who has the ultimate responsability for complying with the provisions of API653?
The owner/operator. (1.2)
The inspector agency of the jurisdiction in which the above ground is storage tank is operated is
called what?
Authorized inspection agency (3.3)
An employee of an authorized inspection agency certified as an AST inspector per API 653
Appendix D, is known as what?
Authorized inspector (3.4)
What is the total metal loss divided by the period of time over which the metal loss occurred?
Corrosion rate (3.9)
