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Safety Instrumented System (SIS) Bypassing - Proceed with Extreme Caution

机译：安全仪表系统（SIS）绕过-极端谨慎

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Process system protection provided by a safety instrumented function (SIF) may be rendered inoperable when a bypass of any of the components of a SIF is installed either intentionally or unintentionally. The result is greater opportunity for the identified catastrophic consequence associated with the SIF to occur if a demand were placed on the safety instrumented system (SIS) while the bypass is in place. To reduce probability of an incident occurring with a bypass in place, operations and maintenance personnel must understand the protective function, be able to recognize actions that could result in a bypass and strictly adhere to policies and procedures that govern implementation of a bypass when allowed.rnThis paperrn1. Presents definitions of bypassingrn2. Presents examples of intended and unintended bypassesrn3. Gives some considerations as to what bypasses should and should not be allowedrn4. Presents practices that can effectively manage bypassing.

机译：如果有意或无意安装了SIF的任何组件的旁路，则可能会导致无法使用安全仪表功能（SIF）提供的过程系统保护。如果在旁路就位的情况下对安全仪表系统（SIS）提出了要求，则结果将有更大的机会发生与SIF相关的灾难性后果。为了降低在使用旁路的情况下发生事故的可能性，操作和维护人员必须了解保护功能，能够识别可能导致旁路的行为，并严格遵守在允许的情况下管理旁路实施的政策和程序。本文1。介绍了bypassingrn2的定义。介绍了有意和无意的旁路的示例。考虑应允许和不应允许哪些旁路4。介绍可以有效管理旁路的实践。

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来源
《ISA EXPO 2009》|2009年|P.339-347|共9页
会议地点 Houston TX(US)
作者
Ronald E. Nelson;
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作者单位

Open Range Engineering Services, PLLC PO Box 2179 217 North Cuyler Street, Suite 300 Pampa, Texas 79066-2179;

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会议组织
原文格式 PDF
正文语种 eng
中图分类力学量测量仪表;成分分析仪器;
关键词
ANSI/ISA-84.00.01 Part 1; bypass; in-service maintenance bypass; out of service bypass; SIS bypass; startup Permissive;

机译：ANSI / ISA-84.00.01第1部分；旁路;在职维护旁路；退出服务旁路； SIS旁路；允许的启动;

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Safety Instrumented System (SIS) Bypassing - Proceed with Extreme Caution

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