What is the latest edition of API 653?
Matthew Wilson
Updated on February 27, 2026
API 653 was originally published in January of 1991, and the most recent 5th edition was released in November of 2014. The requirements set forth in API 653 are meant to cover those steel storage tanks that were constructed under the standards of API 650 and its predecessor API 12C.
What does API 650 mean?
Welded Tanks for Oil Storage
API 650, Welded Tanks for Oil Storage, is a standard developed and published by the American Petroleum Institute (API) that establishes minimum requirements for the design, fabrication, erection, and inspection of welded storage tanks.
What is API 12F?
A 12F tank is a welded-steel vessel designed to store flammable and combustible liquids. This is in accordance with the API Specification 12F entitled, Specification for Shop Welded Tanks for Storage of Production Liquids.
What is the latest edition of API 620?
Current API 620 standard The latest edition of the API 620 standard applies to the design of low pressure storage tanks. Section Q of this standard specifies requirements for materials, design and fabrication of metal parts for refrigerated tank systems.
What are API 650 tanks?
API 650 Vertical flat-bottomed tanks The API 650 is widely used for tanks designed to withstand low internal pressures, for the storage of typical products such as crude oil, petrol, chemicals and water.
What is a UL 142 tank?
UL-142 tanks are steel atmospheric tanks intended for aboveground storage of non-corrosive, stable, flammable, and combustible liquids.
What is api620?
API 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks, is a standard developed and published by the American Petroleum Institute that gives requirements for the design and construction of large, welded storage tanks with pressures in their gas or vapor spaces of not more than 15 lbf/in.
What is API 581?
API 581 provides a basis for managing risk by making an informed decision on inspection frequency, level of detail, and types of nondestructive examination (NDE). It is a consensus document containing methodology that owner–users may apply to their RBI programs.
How long is API 653 good for?
three-year
API 653 certification is valid for a three-year term and is accredited by the American National Standards Institute (ANSI).
What is diagnosis code 650?
ICD-9 code 650 for Normal delivery is a medical classification as listed by WHO under the range -NORMAL DELIVERY, AND OTHER INDICATIONS FOR CARE IN PREGNANCY, LABOR, AND DELIVERY (650-659).
What is API 650 storage tank?
API 650 is the standard governing welded tanks for oil storage. It dictates tank design, fabrication, welding, inspection, and erection requirements. API 650 is widely used for tanks that are designed to internal pressures of 2.5 PSI or less and store products such as crude oil, gasoline, chemicals and produced water.
What is Microsoft 650?
Microsoft Lumia 650. The Lumia 650 is a Windows 10 Mobile device similar to the Lumia 550, with the major difference being the larger screen size. The Lumia 650 features a flat chrome band around the top and sides, with both white and black variants in the mix reflecting a new design language.
