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IGF-Code (IMO, IGF-code: international code of safety for ships using gases or other low-flashpoint fuels. IMO, London, 2016, [1]): “3.2.18 A single failure in a technical system or component shall not lead to an unsafe or unreliable situation.” This FR stipulates that multi failure scenarios are not considered and that the protection against a single failure is sufficient. This is the motivation for the two-barrier principle The 2-barrier principle is a general concept to ensure that a single failure will not lead to an unacceptable dangerous situation. This generic concept is one of the most important principles for an adequate level of safety for system design.

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The Two-Barrier Principle

  • 章节

  • 发表日期：

    2025年

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  • Gerd Würsig

摘要

IGF-Code (IMO, IGF-code: international code of safety for ships using gases or other low-flashpoint fuels. IMO, London, 2016, [1]): “3.2.18 A single failure in a technical system or component shall not lead to an unsafe or unreliable situation.” This FR stipulates that multi failure scenarios are not considered and that the protection against a single failure is sufficient. This is the motivation for the two-barrier principle The 2-barrier principle is a general concept to ensure that a single failure will not lead to an unacceptable dangerous situation. This generic concept is one of the most important principles for an adequate level of safety for system design.