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API STD 520 PART 2 : 2020
Sizing, Selection, and Installation of Pressure-relieving Devices - Part II-Installation

Sizing, Selection, and Installation of Pressure-relieving Devices - Part II-Installation

Document No. API STD 520 PART 2 Document Year 2020
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This document is published by American Petroleum Institute (API)

Standard Details

This standard covers methods of installation for pressure-relieving devices (PRDs) for equipment that has a maximum allowable working pressure (MAWP) of 15 psig (1.03 barg or 103 kPAg) or greater. Pressure-relief valves (PRVs) or rupture disks (RDs) may be used independently or in combination with each other to provide the required protection againstexcessive pressure accumulation.

As used in this standard, the term “pressure-relief valve” includes safetyreliefvalves used in either compressible or incompressible fluid service,and relief valves used in incompressible fluid service. This standard coversgas, vapor, steam, two-phase, and incompressible fluid service; it does notcover special applications that require unusual installation considerations.

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