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About This Item
Full Description
This Guide presents recommended practices applicable to pressure-relieving and vapor depressuring systems. The information provided herein is designed to aid in the selection and type of system most appropriate for the risk and circumstances involved in the various installations. It is intended to supplement the practices set forth in API RP 520 for establishing a basis of design.
Guidelines are provided for the examination of the principal causes of overpressure; for the determination of individual relieving rates; for selection of disposal systems; and for the design of disposal systems including such component parts as vessels, flares, and vent stacks.
Piping information pertinent to pressure-relieving systems is presented in Sect. 5 Par. 5.3(A); however, the actual piping is to be designed in accordance with USAS B31.3 or other applicable codes.
Document History
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API Std 521
Pressure-relieving and Depressuring Systems, Seventh Edition, Includes Errata 1 (2022)- Most Recent
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API Std 521
Pressure-relieving and Depressuring Systems, Sixth Edition- Historical Version
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API Std 521
Guide for Pressure-relieving and Depressuring Systems: Petroleum petrochemical and natural gas industries-Pressure relieving and depressuring systems, Fifth Edition (Includes 2008 Addendum)- Historical Version
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API 521
Guide for Pressure-Relieving and Depressuring Systems- Historical Version
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API 521
Guide for Pressure-Relieving and Depressuring Systems- Historical Version
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API 521
Guide for Pressure-Relieving and Depressuring Systems- Historical Version
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API 521
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Guide for Pressure Relief and Depressuring Systems- Historical Version