本文件提供了关于满足ISO 6183:2009、6.4.1和7.4.1以及ISO 14520-1:2015、5.2.1 h和5.3 h中有关超压和欠压排气和排放后排气的要求的指南。它考虑通风孔的设计、选择和安装，以保护由固定气体灭火系统保护的外壳的结构完整性，以及使用的排放后通风设备。

This document provides guidance on fulfilling the requirements contained in ISO 6183:2009, 6.4.1 and 7.4.1 and ISO 14520-1:2015, 5.2.1 h and 5.3 h, in respect to over and under pressurisation venting and post discharge extract. It considers the design, selection and installation of vents to safeguard the structural integrity of enclosures protected by fixed gaseous extinguishing systems and the post discharge venting provisions where used.