API Standard 653 Quiz

API publications are meant to address general issues, but specific circumstances might require consulting local, state, and federal laws and regulations.

Using API publications is entirely voluntary. It's up to third parties or authorities to decide whether to adopt them and mandate compliance.

API does not guarantee the accuracy, completeness, or usefulness of the information presented in its publications. They assume no liability for any outcomes resulting from using the information.

API does not claim ownership or control over any intellectual property rights related to the information provided in its publications.

API publications are available for anyone to use for their purposes, without any limitations.

A document outlining the requirements for personnel who conduct non-destructive examinations (NDE) on tanks, including qualifications and certifications.

Covers the procedures and personnel for inspecting the bottom of a tank, ensuring it meets quality standards.

Provides guidance on assessing the suitability of a tank for a specific application based on its prior usage and condition.

This annex lays out detailed guidelines for constructing and inspecting stainless steel storage tanks, ensuring they meet the stringent requirements for this corrosive-resistant material.

This section addresses the unique challenges and considerations for building storage tanks that combine stainless and carbon steel, ensuring compatibility and safe construction.

The process of fixing damage to a tank's exterior, typically by replacing or repairing sections of the shell plate.

A method used to repair tank shells where a piece of metal is welded over the damaged area.

Materials like fiberglass or epoxy can be used to repair tank shells, offering a lightweight and corrosion-resistant solution.

A process of changing the height of a tank by adding or removing sections of the shell, often done to increase storage capacity.

Repairing flaws or defects in the metal plate that forms the tank's shell, ensuring structural integrity.

Addressing issues with welds that connect different sections of the tank, ensuring a strong and leak-proof connection.

The process of sealing any openings or penetrations in the tank's shell to prevent leaks and maintain containment.

Adding or replacing access points or connections to the tank's shell, often for purposes of maintenance, inspection, or fluid transfer.

Changes or repairs to a storage tank that significantly affect its structural integrity. Examples include installing large penetrations below the liquid level, replacing large sections of shell plates, or removing substantial portions of welds.

The thickness of the tank shell as specified in the original design documents. This includes any allowance for corrosion.

The entity responsible for managing, operating, and maintaining a storage tank.

The inside surface of a tank that comes into direct contact with the stored liquid product.

The material in a tank component is deemed suitable for use, based on its toughness properties.

A condition that exists when a tank component's material meets the toughness requirements specified in the API 653 standard.

The thickness of a tank shell as measured directly on the actual plate. It may differ slightly from the nominal thickness.

A condition that exists when a tank component's material meets the toughness requirements specified in the API 653 standard.

A set of standards and best practices for the design, construction, operation, and maintenance of aboveground storage tanks.

API Recommended Practice 651 outlines the methods and procedures for protecting storage tanks from corrosion using cathodic protection.

A special type of lining applied to the bottom of aboveground storage tanks to prevent leaks and corrosion.

This standard addresses the design and construction of large, welded, low-pressure storage tanks.

This standard focuses on welding and brazing procedures for pressure vessels.

A procedure that involves introducing an inert gas, such as nitrogen, into a space to displace oxygen and prevent fire hazards.

A set of guidelines for working safely in inert confined spaces within the petroleum and petrochemical industries.

A type of inspection that involves using non-destructive techniques to evaluate the condition of materials or structures.

A set of standards that address the design and construction of aboveground welded tanks for storing oil.

A set of recommended practices for hot tapping operations in the petroleum and petrochemical industries.

The measurement of the tank's diameter, expressed in meters, is represented by 'D'.

The least thickness found in a corroded area, excluding pits, is denoted as 't2'. It's measured in millimeters.

In the formula for 'L', 't2' refers to the minimum thickness in a corroded zone, excluding pits - a crucial factor for assessing tank strength.

L stands for the maximum vertical length, in inches. It represents the area where hoop stresses are assumed to distribute evenly around local inconsistencies.

When calculating 'L' in metric units, the formula is L = 34Dt2. However, the calculated value must not exceed 1000 millimeters.

When calculating 'L' in USC units, the formula is L = 3.7Dt2. The result should not surpass 40 inches.

During the tank inspection process, the inspector identifies several planes (a-e) to examine. The plane with the lowest average thickness is chosen for further analysis.

On the selected inspection plane (c), the average thickness (t avg) is measured, and the least thickness (t2) within the area is also recorded. This information is used to calculate 'L' for the corroded section, ensuring safety and stability.