【Haichuan’s Best Practices】Building Explosion-Proof Devices and “5G Explosion-Proof Micro Stations” to Advance the Development of 5G Smart Factories
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Happy May Day! Recently, in the outdoor control room of Unit 2 for desulfurization, the completion of the project was confirmed by the technicians from the instrument control center, marking the establishment of Guangzhou Petrochemical’s first “5G explosion-proof micro station”. To advance the intelligent inspection of industrial facilities and continuously improve the 5G network coverage within the plant area, Guangzhou Petrochemical has so far built 11 5G base stations, 10 of which are large non-explosion-proof stations located outside the facility areas. Starting this year, Guangzhou Petrochemical has launched intelligent inspection operations; since 10 5G non-explosion-proof base stations are located outside the plant area, there are signal dead zones in certain areas and within the plants themselves. In mid-March, the company requested the addition of 5G explosion-proof base stations to address the issue of insufficient 5G coverage. Following preliminary inspections carried out by technical personnel from the Information Center and the Instrumentation and Control Center, in order to achieve full coverage of 5G signals within the plant area, the technicians decided to route the wireless base stations located in the testing area of the center built last year to the roof of the outdoor control room building for Unit 2 desulfurization. By installing 3 additional external explosion-proof network amplifiers, 3 spotlight antennas, adding 1 AC power supply unit and 1 5G base station device to the equipment cabinets in the outdoor control room, these measures were taken to eliminate signal dead zones in the plant. To ensure the smooth implementation of the project, after conducting a risk assessment, the technical staff developed a detailed implementation plan. They explored and cleared the communication pipelines from the testing center area to the No. 2 desulfurization unit in advance, thereby ensuring that the laying of optical cables and the construction of base stations could be completed on schedule. During implementation, technical staff worked overtime to oversee every stage, ensuring strict quality control at each step such as pipeline exploration, material selection, and design ； In strict accordance with quality management regulations, inspection of installation test records, acceptance records for concealed works, etc., is carried out to conduct \"three-level\" quality inspections (central level, regional level, team level). The completion of Guangzhou Petrochemical’s first \"5G explosion-proof micro station\" has provided experience for the construction of such stations in other areas and facilities, thereby facilitating the ongoing development of 5G smart factories.
How much is each external explosion-proof network amplifier?
The 5G non-explosion-proof large sites are located outside the equipment area, and there are signal dead zones in some areas and around the equipment
It has passed the acceptance test; large companies should implement it first to reduce costs
I’m not sure where I can find information on 5G smart factory projects that have already been implemented in China’s petrochemical industry; I’d like to learn more about them.
On May 6, at the site of Guangzhou Petrochemical’s No. 2 reforming unit, operator Gong Chao used a explosion-proof phone to determine the exact liquid level in the ammonia storage tank and then entered the data into the system. After completing his inspection task and returning to the outdoor control room, his inspection route as well as all the data entered during the inspection are displayed in real time on the intelligent inspection system via wireless transmission. Since the beginning of this year, Guangzhou Petrochemical has been actively promoting intelligent inspection work. Unit 2 for reprocessing is a pilot unit in the Second Refining Department; since the implementation of the intelligent inspection system on April 1, its attendance rate and completion rate for using this system have been among the highest in the company. In the past, the traditional \"signboard\" inspection method was used; inspection data could not be uploaded in real time, which led to delays in detecting abnormalities in the operation of on-site equipment. It was also impossible to accurately determine the inspection routes and tasks for operators, and managers faced limitations when it came to quantifying workloads and implementing performance evaluations. The implementation of intelligent inspections has enabled digital management and control of the equipment at the site. Before starting the inspection, operators can log in to the explosion-proof intelligent inspection terminal using various methods such as facial recognition, employee ID entry, and badge detection ； At the start of the inspection, the system provides guidance on how to carry out the inspection as well as reminders regarding the clock-in time ； Upon reaching the inspection point, contact with the electronic module on the inspection panel is used to confirm the location; once confirmed, the inspection task is displayed automatically, and the time of arrival is uploaded to the system immediately. To standardize the inspection times and routes and enable real-time comparison with data from the DCS system, operators must upload relevant production data at each inspection point, such as the temperature and pressure of pumps and motors, as well as the liquid level in tanks. The system’s parameter comparison and error-correction functions help prevent employees from entering data incorrectly or failing to enter it at all, ensuring that there is a record of every inspection carried out. The intelligent inspection system makes use of information technology, enabling on-site inspectors to obtain in real time the historical abnormality data related to the object under inspection, as well as the data from the control instruments ； For issues identified on-site during inspections, reports can be submitted using videos, images, text, audio, and other means to provide a detailed record of the situation on site. The data is transmitted back to the system in real time, enabling paperless inspections and ensuring that all equipment is inspected at all times. Furthermore, technicians can also view and analyze equipment operation data in real time to make targeted optimizations and adjustments, ensuring the safe and stable operation of the devices. Once, during an intelligent inspection, when the operator entered the outlet pressure value of the benzene clay tank feed pump into the system, the system parameters suddenly changed from blue to red, indicating an abnormal condition. The operator immediately retrieved the previous parameters for comparison and found that the outlet pressure value was higher than in the past. The operator promptly checked with the internal operator and found that the outlet pressure of the benzene clay tank increased simultaneously. After reporting to the shift leader and management in a timely manner, he adjusted the opening degree of the pump outlet return valve according to the production conditions, promptly eliminating potential risks and ensuring the safe and stable operation of the facility. “Since the introduction of the intelligent inspection system, device inspections have become more thorough, equipment operation has become more stable, and production processes have become safer. ” said Mu Hongqi, deputy chief engineer of Unit 2 reforming unit.