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API STD 650
- Base Document Only
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Revision / Edition: 11
Chg: W/ ADM1
Date: 11/00/08
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WELDED TANKS FOR OIL STORAGE *** ORDER BINDER @ N/C FOR H/C ONLY ***
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Comments:
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C65011A1
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Superseding Document:
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Page Count:
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466
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In Stock:
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Yes
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Hardcopy Price:
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$ 425.00 |
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Secure PDF Price  : |
$ 425.00 |
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| Document Abstract |
GENERAL
This Standard establishes minimum requirements for material,
design, fabrication, erection, and testing 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
1.1.12). 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
1.1.19).
• 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.
• This Standard has requirements given in two alternate systems
of units. The Manufacturer shall comply with either:
all of the requirements given in this Standard in SI units,
or
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.
All tanks and appurtenances shall comply with the Data Sheet and
all attachments.
• Field-erected tanks shall be furnished completely erected,
tested, and ready for service connections, unless specified
otherwise. Shop-fabricated tanks shall be furnished tested and
ready for installation.
• 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 Appendix L, an appendix becomes a
requirement only when the Purchaser specifies an option covered by
that appendix or specifies the entire appendix. See Table 1-1 for
the status of each appendix.
Appendix 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 appendix.
Appendix B provides recommendations for the design and
construction of foundations for flat-bottom oil storage tanks.
Appendix C provides minimum requirements for pontoon-type and
double-deck-type external floating roofs.
Appendix D provides requirements for submission of technical
inquiries regarding this Standard.
• Appendix E provides minimum requirements for tanks subject to
seismic loading. An alternative or supplemental design may be
mutually agreed upon by the Manufacturer and the Purchaser.
Appendix F provides requirements for the design of tanks subject
to a small internal pressure.
Appendix G provides requirements for aluminum dome roofs.
Appendix H provides minimum requirements that apply to an
internal floating roof in a tank with a fixed roof at the top of
the tank shell.
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