API Std 520

Sizing, Selection, and Installation of Pressure-relieving Devices in Refineries, Part I - Sizing and Selection, Eighth Edition

American Petroleum Institute , 12/01/2008

Publisher: API

File Format: PDF

$70.00$140.00


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.Pressure relief devices protect a vessel against overpressure only; they do not protect against structural failure when the vessel is exposed to extremely high temperatures such as during a fire. See API 521 for information about appropriate ways of reducing pressure and restricting heat input.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.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.

API Std 520 History

API Std 520, Part 1

API Std 520, Part 1

$208.00 $416.00

API Std 520, Part 1

API Std 520, Part 1

$66.00 $133.00

API Std 520

API Std 520

$70.00 $140.00

API RP 520

API RP 520

$72.00 $144.00

API 520-1-1993

API 520-1-1993

$72.00 $144.00

More API Standards PDF

API 13J

API 13J

$72.00 $144.00

API MPMS Chapter 5.1

API MPMS Chapter 5.1

$72.00 $144.00

API Std 560

API Std 560

$91.00 $182.00

API TR 405

API TR 405

$72.00 $144.00