At approximately 11:30 on July 7th,

A factory building in Zhongtang, Dongguan, Guangdong Province caught fire,

The scene was filled with raging flames, thick smoke, and accompanied by intense explosions,

The hashtag "#DongguanExplosion#" soared to the top of trending topics.

On the 7th, the Zhongtang Fire Rescue Detachment of Dongguan City Fire Rescue Detachment issued a notice stating that at approximately 11:35 am on July 7, 2024, a fire broke out at a factory located in Dongxiang Village, Zhongtang Town. The fire affected an area of approximately 300 square meters. Currently, the fire has been brought under control, and there have been no reports of casualties or people trapped at the scene. Some individuals who felt unwell have been sent to the hospital for examination and their conditions are stable. The cause of the accident is currently under investigation.

The summer weather is hot,

It is also the peak production season for factories and enterprises,

Factories consume a large amount of electricity, and workshops are densely populated with personnel,

Warehouses contain a large number of flammable and combustible materials,

Slight carelessness can easily lead to fire accidents.

These types of enterprises should be particularly cautious:

Pharmaceutical enterprises

Pharmaceutical manufacturing enterprises are prone to storing flammable, toxic, and hazardous materials, and in the event of a leak, the impact on the surrounding environment can be significant and detrimental.

Petrochemical enterprises

Petrochemical enterprises are highly dangerous due to their complex and variable production processes, the large-scale nature of their production facilities, the continuous nature of their operational processes, and the flammable, explosive, toxic, harmful, and corrosive nature of their raw materials and products.

Hazardous Chemical Storage Enterprises

Storage warehouses are areas where materials are highly concentrated, resulting in a significant fire load. Additionally, the presence of flammable, explosive, toxic, and harmful gases, along with complex internal layouts, inadequate fire-fighting equipment, and a lack of fire-fighting water sources, can exacerbate the situation. In the event of a fire, the economic losses can often be severe.

The causes of accidents are diverse, but special attention must be paid to incidents involving hazardous gases. Accidents caused by hazardous gas leaks can be addressed by adopting technological prevention measures instead of relying solely on human intervention. By using online real-time monitoring equipment to supervise key risk areas in factories, accidents can be prevented. Fixed reflective laser gas telemetry systems and fixed scanning laser gas telemetry systems can be installed at the boundaries of equipment, tank areas, compressors, etc., to effectively detect leaks and spills of hazardous gases. These systems offer a wider detection range, longer distance, and faster response time compared to conventional multi-point fixed detectors. They provide broader detection coverage, are safer, and have simpler design and construction requirements, thereby saving investment costs.

Fixed Reflective Laser Gas Telemetry System

Hanhai Optoelectronics' fixed reflective laser gas telemetry system integrates both transmitter and receiver functions, with a detection range of up to 1 kilometer. It boasts a response time of just 1 second, enabling precise detection of trace leaks at the ppm level. This truly realizes preventive monitoring of gas leaks. Compared to traditional detectors, which are susceptible to interference from environmental factors and cross-gases, this system has strong anti-interference capabilities. With fingerprint-based detection, it ensures zero false alarms. The product requires no calibration, saving operational costs throughout its entire lifecycle. It can detect a variety of gases, including methane, ethylene, acetylene, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia, and more.

Fixed Scanning Laser Gas Telemetry System

The telemetry system integrates laser control, spectral acquisition, and spectral analysis. It emits a laser beam towards a distant object under surveillance, which reflects back to the telemetry system. The system then analyzes the returned signal to obtain gas concentration data. By rotating horizontally and vertically, the telemetry system scans and creates a 360° three-dimensional area of measurement similar to a radar, enabling coverage and monitoring of a large space with a detection radius of up to 300 meters. Combining detection data with video images allows management personnel to "see" the current detection situation, including the location being monitored and gas concentration information. Scanning can detect leaks and locate the leak points. Multiple scanning modes can be set, allowing for flexible configuration of scanning paths. Fully automated operation eliminates the need for manual intervention. Real-time online monitoring of gases such as methane, ethylene, acetylene, and ammonia is possible.