对于安装在外部或靠近外墙处安装的工艺设备，爆炸泄压是一种可行的保护方法。然而，为了保护上游设备，保护方法中必须包括阻止火焰传播和燃烧材料返回上游的装置。这可以通过使用一种主动隔离系统（化学或机械）或使用一个被动隔离阀来实现。被动防爆隔离阀是一种自启动装置，它提供了一个机械屏障，以阻止火焰和燃烧材料在上游设备之间传播。
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