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API STD 650 2008 PDF


API STD 650  Welded Tanks for Oil Storage

Revision / Edition: 11     Chg: W/ ADM    Date: 11/00/08

Incorporates Addendum 1 (November 2008)

The Latest PDF of API STD 650 with Addendum 2 (November 2009) is available now,

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API Std 650 establishes minimum requirements for material, design, fabrication, erection, and testing for vertical, cylindrical, aboveground, closed- and open-top, welded carbon or stainless steel 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.

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