Does a combustible and toxic gas detection and alarm system need to be installed separately?
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In practical engineering projects, it is common to see combustible and toxic gas detection signals being integrated into production process control systems composed of DCS or PLCs. However, clause 3.0.9 of the standard GB50493-2009 stipulates that \"combustible gas and toxic gas detection and alarm systems should be installed independently,\" with the explanation being that this ensures they are not affected by failures in the production control instrument systems of the corresponding devices. ”Is it integrated with the production process control system or installed separately? Which approach is more common and safer?
In automated control systems, there is a separate gas detection system designed specifically for detecting hazardous gases or dangerous environments on site. For certain environments, such as analysis booths and on-site workrooms, an independent safety monitoring system may be required, namely one that consists of a PLC along with corresponding gas detection sensors for monitoring and alarm functions.
In other words, for some on-site gas detection alarms, they can be connected to the production process control room system, is that correct?
**Document No. An Jian Zong Guan San [2014] 116 issued by the General Administration of Work Safety specifies that combustible gas and toxic gas detection and alarm systems should be managed as part of the safety instrumented systems, and should be installed separately. How to solve this?……