Importance of Flammable Gas Detection in Oil Refineries

The petroleum industry is a key pillar of the national economy, providing energy, transportation fuel, industrial raw materials, and chemical feedstock. Refineries and oil processing not only supply energy but also provide by-products essential for the chemical industry.

Oil refineries contain large amounts of flammable, explosive, and toxic gases. Any leakage from storage tanks or pipelines can rapidly reach explosive limits, and static discharge can trigger fires or explosions. Therefore, installing flammable gas detectors and implementing real-time monitoring is critical to ensure operational safety.

Role and Principles of Flammable Gas Detectors

Smart monitoring system advantages:

By integrating gas detectors with computer technology, intelligent gas detection systems can quickly identify gas types, assess hazardous environments, and automatically trigger alarms to prompt protective measures or evacuation, minimizing accident risks. Modern sensors detect even very low concentrations, preventing personnel from entering dangerous areas and enhancing operational safety. Computer-assisted analysis provides rapid results for timely management decisions.

Nexisense SGA-501 Series Gas Detector Solutions

The Nexisense SGA-501 series is an industrial-grade flammable gas detector developed with years of expertise, integrating advanced sensor technology and intelligent processing systems for applications in oil, chemical, and industrial safety management.

Key Features

• Real-time online monitoring: continuous detection of CO, CH4, and other harmful gases, automatic alarms when thresholds are exceeded

• Audible and visual alarms: ≥85dB sound alerts with relay linkage for fans and sirens

• Multiple signal outputs: 4-20mA current or RS485 digital signals compatible with PLC, DCS, DDC systems

• Temperature and humidity compensation: full-range correction ensures long-term data stability

• Industrial explosion-proof design: aluminum housing, Ex d IIC T6, suitable for hazardous environments

• Large display: 2.4-inch screen shows concentration, units, and status indicators

• Multi-language interface: Simplified/Traditional Chinese and English, easy operation

• High-precision chip: imported chip ensures stable data with low error rate

  
  

Detection Principle

• Signal acquisition via imported flammable gas sensors

• Signal amplification, data processing, intelligent computation

• Full-range temperature and humidity compensation

• Output standardized signals (0-5V analog or TTL digital) for direct upload to host systems for remote monitoring

Deployment Strategy for Oil Refinery Gas Monitoring

• Key point placement: storage tanks, pipeline interfaces, valves, and around refining equipment

• Real-time monitoring: 24/7 data collection with alarm integration for safety assurance

• Remote management: unified monitoring via PLC or DCS systems

• Regular maintenance: quarterly sensor calibration to ensure data accuracy

• Emergency response: automatic fan ventilation or alarm-triggered evacuation when gas thresholds are exceeded

Practical Applications

• Large refineries: SGA-501 sensors deployed in storage areas monitor CH4 leaks and automatically activate ventilation, significantly reducing accident rates

• Chemical processing zones: CO concentration anomalies trigger alarms to evacuate personnel, preventing injuries

• Pipeline maintenance: remote monitoring ensures safe operations and reduces manual inspection risks

• Intelligent monitoring systems enhance safety prevention, operational efficiency, and management level

  
  

Frequently Asked Questions (FAQ)

1. Why install flammable gas detectors in oil refineries? To detect flammable and explosive gases in real-time and prevent fire or explosion accidents.

2. Which gases does the SGA-501 detect? CH4, CO, H2S, and other flammable hazardous gases.

3. Alarm methods? Audible/visual alarms (≥85dB), relay linkage to fans and sirens.

4. How is data accuracy ensured? Full-range temperature/humidity compensation, imported high-precision chip, and regular calibration.

5. Is remote monitoring possible? Yes, with 4-20mA and RS485 signal outputs for PLC/DCS integration.

6. Explosion-proof rating? Ex d IIC T6, suitable for hazardous flammable environments.

7. Installation and maintenance suggestions? Quarterly calibration/cleaning and checking power and communication lines.

8. Typical applications? Storage tank zones, around refining equipment, pipeline interfaces, chemical processing areas, and critical refinery zones.

Conclusion

Oil refineries operate in complex environments with constant risk of flammable gas incidents. Nexisense SGA-501 series detectors provide real-time monitoring and intelligent alarms to prevent fires, explosions, and toxic gas exposure, ensuring operational safety. Scientific multi-point deployment, remote management, and data analysis enhance safety efficiency, offering sustainable protection. Choosing professional gas detection equipment is a core strategy for modern refinery safety management, safeguarding production and reducing risks.