The website of the Emergency Management Department of Anhui Province recently released an investigation report. At around 13:10 on July 8, 2025,A major poisoning and suffocation accident occurred during the maintenance and renovation of the water reducing agent storage tank in the concrete mixing workshop of a company in Wuhu, Anhui Province, resulting in 4 deaths and 1 injury, with a direct economic loss of 7.5131 million yuan.The accident investigation team determined that the accident was a major production safety liability accident.

After investigation, it was determined that the company's operators violated the safety regulations for confined space operations by entering the accident storage tank without emptying the water reducing agent in the tank, without ventilation, without testing, and without taking personal protective measures. The accident occurred due to the inhalation of toxic and harmful gases such as hydrogen sulfide, carbon monoxide, and carbon dioxide by the relevant personnel;Rescue personnel blindly entered the tank without taking any protective measures, resulting in increased casualties.

事故警示

Limited spaces, such as storage tanks, basements, ditches, reaction vessels, etc., often have poor ventilation and are prone to the accumulation of toxic, harmful, flammable, explosive gases or oxygen deficiency.The water reducing agent storage tank in the accident may decompose and produce highly toxic gases such as hydrogen sulfide under specific conditions. These gases are colorless and odorless, silently permeating like hidden 'invisible killers' that cannot be detected by human senses alone. Ventilation and testing before homework are necessary "prescribed actions" that can or cannot be taken before entering such a "place of life and death". Equipping reliable, convenient, and easy-to-use on-site inspection tools during homework is a specific operation to avoid accidents.

Yao'an portable four in one gas alarm，It can simultaneously detect key gas data of hydrogen sulfide, carbon monoxide, oxygen, and combustible gases in real-time.With just one instrument, one can grasp the concentration levels of multiple potential threats at once. At the same time, Yao'an portable four in one gas alarm also has multiple alarm systems:When the concentration of any measured gas reaches the preset low or high alarm threshold, it will immediately activate a high decibel sound alarm and a strong light alarm,Even in noisy industrial environments or situations with unclear visibility, it can ensure that warning information is clearly received by workers, saving them valuable evacuation time. In addition,The Yao'an portable four in one gas alarm also has fault self diagnosis and alarm functions, ensuring that the instrument itself is always in good working condition and avoiding "sentinel failure".This proactive and mandatory alarm method can effectively overcome human carelessness and interrupt dangerous work behaviors in a timely manner.

The Yao'an portable four in one gas alarm is equipped with a 2400mAH high-capacity battery, which can support continuous operation for more than 10 hours,Capable of meeting the needs of most work shifts and avoiding monitoring gaps caused by midway power depletion. what's more,It has a complete data storage function, automatically recording the on/off time, all alarm events (including type, time, concentration values), and instrument fault records, and can store up to 1000 historical data.Management personnel can trace the gas safety status of the entire operation process by querying these records, determine whether safety regulations have been implemented, and provide objective and tamper proof electronic evidence for safety education, process improvement, and responsibility determination. This has irreplaceable value for implementing the safety production responsibility system and achieving refined management.

If the instrument is operated complexly and the experience is poor, it may also be put on hold by frontline employees.The Yao'an portable four in one gas alarm fully considers practical application scenarios: the clear LCD screen can display multiple gas concentrations, current time, battery level and other information at a glance;The physical button design is easy to operate even when wearing gloves, making it convenient for daily maintenance such as zero adjustment, calibration, and calibration;The independent charging indicator light makes battery management simple and intuitive;These humanized operation designs lower the threshold for use and help encourage employees to develop the good habit of "checking before homework", making safety checks truly integrated into daily work.

Life is supreme, and the safety alarm bell rings long.This portable four in one gas alarm, with its comprehensive detection capability, sensitive alarm mechanism, reliable data traceability, and user-friendly operation design, has become a crucial part of building a three-dimensional safety protection network.Choosing a portable four in one gas alarm is not only to "escort" safe operations, but also a solemn commitment to life, choosing a solid investment for the stable development of the enterprise in the future.

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