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 (see 1.1.13). 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 ??(200 ?? or less (see 1.1.20). 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. NOTE A bullet () at the beginning of a paragraph indicates that there is an expressed decision or action required of the Purchaser. The Purchaser's responsibility is not limited to these decisions or actions alone. When such decisions and actions are taken@ they are to be specified in documents such as requisitions@ change orders@ data sheets@ and drawings.
API STD 650-2013 history
2013API STD 650-2013 Welded Tanks for Oil Storage (Twelfth Edition; Incorporates Errata 1: July 2013@ Addendum 1: September 2014@ Errata 2: December 2014)
2007API STD 650-2007 Welded Tanks for Oil Storage (Eleventh Edition; Incorporating Addendum 1: November 2008; Addendum 2: November 2009; ADDENDUM 3: AUGUST 2011)
1998API STD 650-1998 Welded Steel Tanks for Oil Storage (Tenth Edition; Addendum 1: January 2000; Addendum 2: November 2001; Addendum 3: September 2003; Addendum 4: December 2005)