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About This Item

 

Full Description

Please note: The redline edition of this publication is a comparison of the original 12th edition to the original 11th edition, it does not incorporate any future addenda.

This standard establishes minimum requirements for material, design, fabrication, erection, and inspection for vertical, cylindrical, aboveground, closed- and open-top, welded storage tanks in various sizes and capacities for internal pressures approximating atmospheric pressure (internal pressures not exceeding the weight of the roof plates), but a higher internal pressure is permitted when additional requirements are met. This standard applies only to tanks whose entire bottom is uniformly supported and to tanks in non-refrigerated service that have a maximum design temperature of 93 °C (200 °F) or less.

This standard is designed to provide industry with tanks of adequate safety and reasonable economy for use in the storage of petroleum, petroleum products, and other liquid products. This standard does not present or establish a fixed series of allowable tank sizes; instead, it is intended to permit the Purchaser to select whatever size tank may best meet his needs. This standard is intended to help Purchasers and Manufacturers in ordering, fabricating, and erecting tanks; it is not intended to prohibit Purchasers and Manufacturers from purchasing or fabricating tanks that meet specifications other than those contained in this standard.
 

Document History

  1. API Std 650

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    viewing


    Welded Tanks for Oil Storage, Twelfth Edition, Includes Errata 1 (2013), Errata 2 (2014), and Addendum 1 (2014) and Addendum 2 (2016)

    • Most Recent
  2. API Std 650


    Welded Tanks for Oil Storage, 11th Edition, Includes Addendum 1 (2008), Addendum 2 (2009), Addendum 3 (2011), Errata (October 2011)

    • Historical Version
  3. API Std 650


    Welded Steel Tanks for Oil Storage, 10th Edition

    • Historical Version
  4. API Std 650


    Welded Tanks for Oil Storage, 5th Edition

    • Historical Version
 

Amendments & Errata

  1. API Std 650 Errata

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    Download


    Errata to Welded Tanks for Oil Storage, Twelfth Edition

  2. API Std 650 Addendum 1

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    Addendum 1 to Welded Tanks for Oil Storage, Twelfth Edition

  3. API Std 650 Errata - Chinese

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    Errata to Chinese Translation of API Std 650 Welded Tanks for Oil Storage, Twelfth Edition

  4. API Std 650 Errata 2

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    Errata 2 to Welded Tanks for Oil Storage, Twelfth Edition

  5. API Std 650 Addendum 2

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    Download


    Addendum 2 to Welded Tanks for Oil Storage, Twelfth Edition