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About This Item
Full Description
API 521 specifies requirements and gives guidelines for examining the principal causes of overpressure; determining individual relieving rates; and selecting and designing disposal systems, including such component parts as piping, vessels, flares, and vent stacks. This Standard does not apply to direct-fired steam boilers.
This edition of API 521 is the identical national adoption of ISO 23251, Petroleum and natural gas industries-Pressure-relieving and depressuring systems
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
viewing
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
Guide for Pressure Relief and Depressuring Systems- Historical Version