Design of the emergency shutdown system for the ion-exchange membrane caustic soda system
Thread Content
According to Article 9(3) of the \"Implementation Measures for Work Safety Licenses of Hazardous Chemicals Production Enterprises\", as amended by Order No. 79 of the State Administration of Work Safety dated May 27, 2015, automated control systems shall be installed in facilities that involve hazardous chemical processes or hazardous chemicals subject to strict supervision； Large-scale chemical plants involving hazardous chemical processes are equipped with emergency shutdown systems ； Facilities such as alarms for leaks of flammable, explosive, toxic, and harmful substances shall be installed in locations dealing with such chemicals ； May I ask: How is the safety integrity level of this emergency shutdown system determined? Are there clear regulations?
You can take a look at the Safety Standardization Standards and Assessment Scoring Rules for Hazardous Chemical Enterprises (General) at http://wenku.baidu.com/link?url=IWaPkw4MEcdPj-UvSs2EtGBQCBJ9rh_hLj4u1ZPTmoen-pp-Fw-Wp7yYg1zUx1GUTpfuWlJM1c66FS4XVmfPhugstfQpBwZgsSbEkpF3Kn3
Regarding the design of the emergency shutdown system (ESD) for ion-exchange membrane caustic soda systems, may I ask: should the safety integrity level of this ESD be set at SIL1 or SIL2? Are there clear regulations?
I happened to develop a PLC emergency shutdown system for ion-exchange membrane caustic soda in 2016; we could exchange ideas on that
The SIS system is a combination of a DCS system, an ESD system, and a flammable and toxic gas alarm system