For hazardous chemicals that are only under strict supervision, without hazardous processes and not constituting major hazard sources, is it necessary to install a SIS?
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Gentlemen, hydrogen is a hazardous chemical that is subject to strict regulation. In a gas filling station that has a hydrogen processing area, is it necessary to install an SIS? According to Document No. 116, chemical plants involving two key aspects and one major aspect must be equipped with SIS.
First, go to the design institute to conduct a Hazop analysis
It is necessary to do so; find a qualified organization to carry out the SIL certification – any method will do, whether it’s HAZOP or LOAP
Document No. 116 makes it clear: matters involving two key points and one major issue are to be addressed on the basis of a comprehensive process and hazard analysis. I don’t know why, but as it was passed around, it became the rule that such matters must be dealt with as those involving two key points and one major issue. Hehe
It is necessary to distinguish between existing and newly built facilities; newly built ones must be equipped with a safety instrumented system.
Wasn’t it written that way in the original document? “Starting from January 1, 2018, all newly constructed chemical processing units and hazardous chemical storage facilities related to the \"two key areas and one major issue\" must be designed with safety instrument systems that meet the required standards. For the safety instrument systems of other newly built chemical processing units and hazardous chemical storage facilities, starting from January 1, 2020, it is necessary to comply with the requirements of functional safety standards and design safety instrument systems that meet those requirements. ”
This post was last edited by skyg412 on 2022-5-13 at 16:15. Perform HAZOP first, followed by SIL classification, in order to determine whether a SIS is necessary. In general, for situations that do not constitute major hazard sources, it is rare for the relevant circuits to be classified as SIL1 or higher. In other words, there will be no requirement to use SIS. Furthermore, among the hazardous chemicals that are subject to strict supervision under the “two key areas and one major area” framework, some of these chemicals are stored in barrels and are mobile; such chemicals cannot be integrated into a SIS. Therefore, for chemical plants and storage facilities that fall under the “two key areas and one major area” category, it is necessary to determine whether a SIS should be implemented based on HAZOP analyses and SIL grading. The above are purely personal opinions and for reference only!
This guy is sensible and gets to the point. If it’s involved, just go for it. I don’t want to argue
The Safety Supervision Bureau says it must be implemented – do you dare not do it?
Based on a comprehensive process and hazard analysis, decide whether to implement a SIS. SIL≥1 requires installation