The 2nd China International Chemical Safety Technology and Equipment Exhibition came to a successful conclusion. Harbin Dongfang Alarm Equipment Development Co., Ltd.: "Xuanchuang Gas Detection and Early Warning Interconnection System Project" won the 2nd China International Chemical Safety Technology and Equipment Exhibition and the Outstanding Scientific and Technological Achievement Award.
? The reasons why Xuanchuang Gas Detection and Early Warning Interconnection System can save more lives can be answered according to the following cases.
? Case 1: Puguang Gas Field Purification Plant.
The equipment was overhauled. In the tank dredging process, a mobile regional gas detection alarm instrument was adopted to monitor the gas environment in the tank in real time by pumping. Ensure that the concentration changes at any time point, the field staff and surrounding personnel can know the early warning at the first time, and outsiders can go to the rescue at the first time when the internal environment changes.
case 2: hot work site of west-to-east gas transmission project.
From a technical point of view, it is difficult to spread the dangerous information in the confined space, because we have witnessed too many cases. They often miss the best rescue time because the change information of gas environment in limited space can not be transmitted to external monitors in time.
in order to improve the safety of confined space operation, we have solved this difficult problem, and the gas information in confined space has been effectively transmitted.
case 3: a factory has completed the whole factory coverage of wireless audible and visual alarm.
when Zhang Gong was patrolling the factory, the NANO-4S that he was wearing suddenly gave an alarm, and the auxiliary screen showed "Hydrogen sulfide leakage from No.3 valve of gas storage tank A", accompanied by voice broadcast and current concentration of leakage source. Due to the emergency, Zhang Gong directly handed over the equipment to the regional inspection and maintenance department, and emphasized that the concentration was too high. At this time, the inspection and maintenance department immediately put on anti-virus equipment and closed the leak source, effectively avoiding further development of the situation and preventing damage to the site and surrounding personnel.
Timely transmission of accurate alarm information to field workers through wireless technology will reduce the number of accidents caused by human factors during information transmission. Wireless transmission of alarm information is detailed: alarm position display, leakage concentration display, three-level early warning and acousto-optic vibration prompt. Reduce the difficulty of transformation: it can be seamlessly connected with gas detectors from other manufacturers.
case 4: a shift patrol
Li Gong and Wang Gong cooperated to inspect the device. After several minutes of patrol separately, the NANO 4S worn by Wang Gong gave an alarm, and the auxiliary screen showed "Li Gong is in danger" and showed the concentration of toxic gas in his environment. At this time, Wang Gong immediately sought rescue, but Li Gong was not seriously injured in time due to the rescue. Afterwards, Li Gong said: "At that time, I fainted when I smelled something wrong. If the information was not transmitted in time, people might be gone."
alarm signals can be transmitted between wireless portable meters, which can not only passively detect gas environment, but also actively receive alarm signals from other portable meters. It is realized that one person in the operation team gives an alarm, and other team members can know the gas environment in which the alarm person is located in time and accurately, which shortens the response time of class members and takes targeted measures according to specific conditions.
case 5: tank cleaning in a factory
when the laboratory determined that the gas environment met the operating standards, a factory started tank cleaning, and three GQB-211A7P devices were placed outside the tank to step into the sampling tubes of 11m, 21m and 41m respectively for real-time uninterrupted pumping detection. Soon after the operation, the position A7 of 41m detection point gave an audible and visual alarm indication, and the workers immediately evacuated from the tank farm. At the factory meeting afterwards, the safety and environmental protection department pointed out that there are too many uncertain factors in the confined space environment, and the pumping products with continuous detection are much superior to portable products in the effectiveness of detection, and it is required that continuous detection equipment must be used in the temporary working environment in the future.
according to the requirements of GB31871-2114, the continuous and uninterrupted real-time monitoring of confined space operations that may release harmful substances has been realized. Let the alarm information inside the confined space be timely and effectively transmitted to the security personnel outside the confined space, so that they can take corresponding rescue measures according to the gas environment inside the confined space.
case 6: temporary construction work in tunnel and tank body
when temporary construction work is carried out in tunnel and tank body, when the gas environment of the workers in the tank body changes, the external safety personnel and management personnel who are responsible for handling the dangerous situation cannot know the gas change inside the tank body in time and accurately. At this time, if outsiders blindly enter the confined space, it is very likely that a safety accident will occur. Accidents caused by this situation are on the rise in recent years.
The main reason for the accident when working in a confined space is that the alarm information of the gas detector in the confined space can't be transmitted to the people outside the confined space in time, which causes the people outside the confined space to lose valuable rescue time. How to ensure the safety of confined space, temporary construction and emergency repair has always been a topic that puzzles us. In recent years, this piece of safety accidents have been more frequent.
then, how to solve this problem has become an urgent need. The mobile area gas detection alarm instrument (GQB-211A7P) of Harbin Dongfang Alarm is developed to solve the hidden safety problems in confined space, temporary construction and emergency repair site.
when the operator is working in the confined space, put A7P outside the confined space, send its suction hose (up to 51 meters) into the confined space and start it. In this way, the equipment (the battery service time is 61~121) will continuously extract the gas in the confined space for real-time detection. When the internal gas environment changes and reaches the alarm value, the equipment will send out acousto-optic and wireless alarm signals. External safety officers and managers can get accurate alarm information at the first time, and can take corresponding rescue measures for the workers in the confined space in time. Reduce unnecessary casualties.
if you are working temporarily in an open area, you can put the diffused A7 in the downwind of the release source which is easy to leak. In case of leakage, this equipment can send out audible and visual and wireless alarm signals to give an accurate and timely warning to the surrounding workers. Let the operators evacuate in time. If there is no such equipment on site, the operator will know that the gas environment has changed only when the portable gas detector gives an alarm, but it is too late, because the operator has been exposed to dangerous gas at the same time with the portable gas detector, which is very dangerous. When A7 is on the scene, when the gas leaks, A7 is the first equipment to contact with dangerous gas. Before the workers are exposed to dangerous gas, the workers have received accurate alarm information through the wireless alarm signal sent by A7, which will be displayed on our wireless portable gas detector, accompanied by audible and visual prompts. The alarm information is effectively and accurately transmitted in the first time, and people are isolated from dangerous gases through this wireless alarm information, which greatly reduces the possibility of accidents.
Through the above cases, we can clearly judge how Xuanchuang Gas Detection and Early Warning Interconnection System can save more lives.
The second China International Chemical Safety Technology and Equipment Exhibition was a successful event, and Dongfang Alarm Company achieved fruitful results.