Active standard | Published: 01/10/2020

API STD 520,PART1

Sizing, Selection, and Installation of Pressure-relieving Devices Part I - Sizing and Selection, Tenth Edition, Includes Errata 1 (2023)

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API STD 520,PART1

Publication date: 01/10/2020

Pages: 172

Country: American technical standard

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Anotation

This standard applies to the sizing and selection of pressure-relief devices used in refineries and related industries for equipment that has a maximum allowable working pressure of 15 psig (103 kPag) or greater.

The pressure-relief devices covered in this standard are intended to protect unfired pressure vessels and related equipment against overpressure from operating and fire contingencies.

This standard includes basic definitions and information about the operational characteristics and applications of various pressure-relief devices. It also includes sizing procedures and methods based on steady state flow of Newtonian fluids.

Atmospheric and low-pressure storage tanks covered in API 2000 and pressure vessels used for the transportation of products in bulk or shipping containers are not within the scope of this standard. See API 521 for information about appropriate ways of reducing pressure and restricting heat input.

The rules for overpressure protection of fired vessels are provided in ASME Section I and ASME B31.1, and are not within the scope of this standard. See more

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