What is the basis for the two-out-of-three and three-out-of-five design in SIS interlock systems?
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What is the basis for using a three-out-of-two or five-out-of-three configuration in SIS interlock design? Are there any relevant standards, such as those that recommend multiple sensing points for safety interlocks?
Based on the HAZOP analysis results
Okay, thank you. I’ll go check out this HAZOP analysis. If you have this information available, could you send it to me?
The HAZOP report is confidential and not suitable for external distribution. I’m sorry.
Thank you. It’s okay. I just found a standard of this kind. I’ve looked into the HAZOP method you mentioned; it’s a very good software. I’ll try to apply it to our project as well, following the guidelines in SHB-Z06-99 – Guidelines for the Design of Emergency Shutdown and Safety Interlock Systems in the Petrochemical Industry, section 6.1 Detection Elements, sub-section 6.1.3: For pressure detection of the key components listed below, a two-out-of-three or two-out-of-two configuration is recommended.
What is the HAZOP analysis software used by the original poster?
It is a currently popular software for analyzing and assessing potential risks in the chemical industry; actually, it relies mainly on human input, similar to brainstorming, and analyzing data with this software is relatively expensive
It is a currently popular software for analyzing and assessing potential risks in the chemical industry; actually, it relies mainly on human input, similar to brainstorming, and analyzing data with this software is relatively expensive
To be honest, HAZOP is carried out differently by various organizations; recently, several risk analysis software solutions have emerged in China.
Was this proposed by the SIL analysis?