The (officially titled Petroleum, petrochemical and natural gas industries — Pressure-relieving and depressuring systems ) is a cornerstone international standard for ensuring process safety in high-risk hydrocarbon environments. It provides rigorous guidelines for the design, selection, and implementation of systems meant to protect equipment from catastrophic overpressure. Core Purpose and Scope
The latest version, , supplements API Standard 521 (6th edition, 2014). It focuses on several critical safety functions: iso 23251 pdf
Petrochemical facilities, gas plants, Liquefied Natural Gas (LNG) facilities, and oil and gas production sites. The (officially titled Petroleum