What devices require ESD
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Please tell me: What kind of device requires an ESD (or SIS) system? Is there any specification in the specification? Where can I get the specifications? thank you all
High-risk devices such as: chemical industry.
The ESD system is when certain variables in the process are abnormal, and the control system instructs the process to stop production urgently and safely to avoid huge property losses and casualties. During the operation of the device, the safety instrument system always monitors the status of the process, determines dangerous conditions, and takes appropriate action when danger occurs to prevent the occurrence of danger. The ultimate goal of the system is to ensure the safety of process production and protect production equipment and operators from harm. like: Nuclear industry, petrochemical industry, coal chemical industry, etc.
The concept of high-risk devices is too broad. For example, a sulfur recovery device or an ammonia synthesis device, is it considered a high-risk device? There should be a corresponding specification for this. Does anyone know what this specification is?
"Petrochemical Emergency Stop and Safety System Design Guidelines" SHB-Z06-1999
Then I would like to ask if both ESD and SIS must be installed in the same device? Thanks
ESD and SIS are the same concept. What situations require the use of ESD is determined based on the results of hazard analysis calculations for different production devices. See IEC61508 for details
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Personally, I feel that ESD has only emerged in recent years, or rather* * It has only been taken seriously in recent years. After all, the cost of this device is still relatively high, except for some industries. * * There are clear regulations for this, but most industries still just set it up in the DCS. As far as I know, the application in the petrochemical industry should account for the majority. Can anyone who knows this industry tell me about the application of ESD in China?