【Ten Years of Rapid Development in Chemical Equipment】1928–2024: The First Large-Scale Domestic Use in China of SIS Systems for Ultra-Large Scale Ethylene Production at the Million-Ton Level

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Safety first. Prevention first – let’s give credit and support to China’s achievements in chemical engineering technology and equipment. **********************【Ten Years of Progress in Chemical Engineering Equipment】A continuously updated summary post; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** The Tianjin Nangang ethylene project has seen the first domestic production of safety instrument systems for large-scale ethylene plants in China. As of July 10, 2024, the domestically produced SIS systems used in this project have been operating well, with a availability rate of 100%. The system’s network architecture, scale, performance, and functions all meet the requirements for use in million-ton-scale ethylene plants. This represents the first time that SIS systems have been widely utilized on such large-scale projects in China.   A safety instrumented system is an independent safety protection system designed to reduce process risks. It not only helps to minimize the risks associated with exceeding safety limits during production processes, but it can also detect and handle its own faults, thereby operating according to predetermined conditions and procedures to ensure that the production process remains in a safe state. Such systems are primarily used in industries such as petroleum, petrochemicals, chemicals, nuclear power, and thermal power generation. Until now, the SIS for major projects such as ethylene plants has mainly relied on imported systems.   To achieve a breakthrough in the application of domestically produced SIS systems, Tianjin Petrochemical relied on the Nangang Ethylene Project to carry out the application and development of such systems using domestic technologies. By working closely with project construction companies and other relevant parties, it was successful in establishing engineering specifications and implementation standards for domestically produced SIS systems in large-scale ethylene projects. On October 18 last year, this system was put into official use, and it has maintained good operational performance throughout the months that followed. This system further increases the localization rate of production equipment in large-scale process industries, and significantly reduces system costs, providing strong support for the localization of systems in key industries as well as their widespread adoption.