Overview of solutions
The fire and gas system is a safety management system for fire and gas detection, which can gather the detection signal of fire button, smoke, fire, combustible gas and poisonous gas on the site of chemical plant and control the alarm lamp, alarm bell, deluge valve, foam vale and fresh air inlet of air conditioning system through software logical output.
System and composition
System function
The fire and gas system can conduct continuous online monitoring on various field equipment and timely find fire and potential fire hazard and take decisive measures to control the occurrence and propagation of fire so as to achieve the purpose of protecting personnel and facility. Normally, the fire and gas system is connected with the broadcasting system which can immediately start fire alarm in the event of fire to activate the fire emergency plan of the platform. The emergency command staff can, through the fire and gas system workstation or DCS interface, determine the place of fire to guide search team and firefighting team to go to the site for fire extinguishing as soon as possible. In the meantime, the fire and gas system is often connected with the emergent shutoff system which can shut off the system in the event of fire based on the shutoff command from the fire and gas system to ensure that the accident can be controlled.
System features
The fire and gas system adopts the design philosophy and technology which have same reliability and availability with SIS and has high automation. Generally speaking, it has the following features:
Reliability: Each key part can have self-diagnosis function through the multi-stage data backup system of redundant design.
Practicality: It can, based on the actual production management condition, design the logical control program suitable for current production management and display much information through simple frame.
Real-time: ms level response to timely display various events on operation or monitor station.
Expandability: Based on PLC technology, large capacity and modular architecture, convenient for expansion; flexible configuration software for expansion based on site process requirement.
Compatibility: Integrate various sensor technologies including smoke, temperature, light, gas and pressure.
Flexibility: Available for communication with DCS, PLC and ESD systems in the form of 4~20mA, RS-485, switching value and industrial Ethernet.