استاندارد API 650

نسخه 2013

Welded Tanks for Oil Storage

API 650

2013

514 صفحه

الزامات مواد مصرفی، طراحی، ساخت و نصب متعلقات انواع مخازن ذخیره جوشی

جهت مشاهده فهرست و کیفیت فایل این استاندارد اینجا را کلیک کنید.

1.1 General
1.1.1 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 °C (200 °F) or less (see 1.1.20).
1.1.2 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.
1.1.3 This standard has requirements given in two alternate systems of units. The Manufacturer shall comply with
either:
1) all of the requirements given in this standard in SI units; or 2) all of the requirements given in this standard in US Customary units.
The selection of which set of requirements (SI or US Customary) to apply shall be a matter of mutual agreement
between the Manufacturer and Purchaser and indicated on the Data Sheet, Page 1.
1.1.4 All tanks and appurtenances shall comply with the Data Sheet and all attachments.
1.1.5 Field-erected tanks shall be furnished completely erected, inspected, and ready for service connections,
unless specified otherwise. Shop-fabricated tanks shall be furnished inspected and ready for installation.
1.1.6 The appendices of this standard provide a number of design options requiring decisions by the Purchaser,
standard requirements, recommendations, and information that supplements the basic standard. Except for Annex L,
an Annex becomes a requirement only when the Purchaser specifies an option covered by that Annex or specifies
the entire Annex. See Table 1.1 for the status of each Annex.
1.1.7 Annex A provides alternative simplified design requirements for tanks where the stressed components, such
as shell plates and reinforcing plates, are limited to a maximum nominal thickness of 12.5 mm (1/2 in.), including any
corrosion allowance, and whose design metal temperature exceeds the minimums stated in the Annex.
1.1.8 Annex AL provides requirements for aluminum tanks.
1.1.9 Annex B provides recommendations for the design and construction of foundations for flat-bottom oil storage tanks.

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