Inspection of inter-plant pipelines

For reference only: Pipeline inspection system. Projects for the long-distance transportation of energy resources and materials are part of social infrastructure; they require substantial investment, take a long time to complete, and have wide-ranging impacts. Moreover, since liquefied natural gas is a flammable and explosive substance, the safety of its pipelines becomes particularly important； Once a pipeline leak occurs and is blocked, it is not only difficult to repair, the interruption lasts for a long time, resulting in huge losses, but it also affects people’s daily lives. To monitor the proper operation of pipeline systems and equipment, inspectors typically conduct regular or irregular inspections of the equipment, and record and archive information on its operating conditions and parameters. Any defects in the equipment or potential safety hazards are identified, along with specific maintenance actions to be taken. However, according to statistics: in cases of pipeline line damage and blockages, most are caused by the inadequate implementation of daily inspection and management systems. Therefore, establishing a scientific and effective maintenance and inspection system is the foundation for ensuring the safe, stable, and reliable operation of the entire pipeline network. The inspection system has now evolved to its third generation: an online, real-time inspection system. The third-generation online real-time inspection system can monitor the routes followed by inspectors, check their working status, issue real-time alerts, and display fault locations via graphical interfaces. It not only eliminates the management and storage issues associated with the first-generation systems but also overcomes the shortcomings of the second-generation systems, such as latency and lack of visualization. It enables the digitalization, visualization, and real-time management of target objects, effectively improving the capacity to handle emergency failures and the level of coordination, thereby ensuring the safe, stable, and reliable operation of the entire pipeline system. System functions: Inspection management, Inspection plan management – creating inspection plans (records) ； Set the inspection scope (the devices included). By utilizing device management functions and GIS technology, define the inspection routes or route names, as well as the device categories, to determine what needs to be inspected. The inspection details can be specified using templates tailored for each type of device, or they can be set temporarily. Plan query: Query historical plans to view their content and execution status. 　 Distribution of inspection tasks: Assign tasks to inspectors within the scope of the inspection plan. It mainly involves setting the objects to be inspected by each inspector (a list of devices) and the deadline for completing the tasks. 　 Inspection task management: Downloading and receiving inspection tasks, as well as query and management functions. Inspection query statistics: Entering certain conditions to retrieve results. 　 Monthly inspection report: Generate a monthly inspection report. Quarterly inspection report: Generate a quarterly inspection report. For monitoring and dispatching, when inspectors are on site carrying out inspections, they use handheld mobile devices to automatically send a short message to the control center every 30 seconds (this interval can be adjusted), providing information such as their current location and time. If any faults are detected, the type of fault and the name of the device are included in a short message, which is then sent to the monitoring center. 　 On-site inspection and monitoring: The control center analyzes location information as well as other reported data in real time, determines the time and place where the fault occurred, the type of equipment involved, and the person who detected it. These data are automatically stored in the database server and made available online at the same time. 　 Real-time trajectory visualization: Utilizing GIS systems to display on electronic maps the real-time locations of inspection personnel, such as the fault locations identified by each inspector, the urgency level of various faults, the status of their resolution, and the current situation. It also shows the location of each inspector at a given moment as well as their inspection routes. Statistical analysis is categorized into different types, including personnel inspection summary tables, line inspection summary tables, line failure summary tables, and unit inspection summary tables. 　 Historical inspection records: View historical inspection data under specific conditions. The inspection rate shows the workload of inspectors over a certain period of time; it also provides statistics on defects in a specific area. Defect analysis and trend analysis are carried out using lists and charts to illustrate the development trend in the number of defects of a particular type over a given period (such as one year), for example, defects related to a certain type of equipment, a certain circuit, a certain category, or a certain aspect. System maintenance & data updating: This includes importing the latest map data into the inspection device, as well as transmitting the dynamic data collected on-site by the inspection device in real time to the database at the remote management center ； 　 Equipment maintenance　　 Equipment documentation management　　 Equipment wiring diagrams　　 Equipment status inquiry System performance features: Advancedness – The technical methods, development tools, and hardware used in this system are at the forefront among similar systems both domestically and internationally. This not only reflects the advanced level of the system but also gives it great potential for further development. At the same time, since this system is a practically used project, its technologies and equipment must be relatively mature. Therefore, given the allowance for investment costs, it is necessary to make full use of the latest available technologies and the most reliable products, so that the system can serve society for as long as possible; from a long-term perspective, this is also the most economical approach. Security: Server security – strict permission controls are applied to database servers, and encryption is used in application systems ； Browser security: Access is controlled for each user through passwords, and every user visit is recorded in the system logs ； Within the system: Strict access control is employed to restrict users at different levels and tiers, ensuring that each user can only operate on tasks within their own scope. Reliability systems utilize stable and mature component technologies; the basic components have been tested in numerous large-scale projects and proven to have excellent stability, which helps to minimize the occurrence of failures during system operation. Real-time visualization, based on GPS navigation technology and GPRS communication systems, can continuously and in real time provide inspectors with all the necessary information, eliminating the severe latency issues of first- and second-generation systems ； Combined with the visual geographic analysis capabilities of GIS systems, it is possible to conveniently display on electronic maps the inspection routes taken by inspectors as well as locate the locations where faults occur. Maintainability is a very important factor in the success of application systems today. Maintainability here has two meanings: a. ease of troubleshooting ； b. Daily management is simple. Our system completely separates underlying technology development from application technologies, ensuring that user interfaces, logical calculations, and data storage are all separated from one another, which facilitates fault diagnosis. The system features a highly intelligent and user-friendly design that minimizes the technical expertise required of management staff, thereby reducing the complexity of daily management tasks. System data backup can be completed in one go using optical discs or hard drives; restoration is done quickly following the wizard’s instructions. It is possible to view historical data, and in the event of a failure, the original data can be restored promptly. Scalability: To safeguard the long-term interests of investors, this system must possess a certain degree of openness and scalability. The company will provide the possibility for system expansion for customers, based on their specific management approaches and in line with the relevant security management measures set by the Ministry of Public Security. The system’s technical functional modules feature callable interfaces that can recognize extended parameters and data formats. System deployment modes: Economical inspection system – Inspection points (RFID information tags), handheld inspection devices for reading and recording the IDs and times of inspection points, data upload, and statistical analysis (such as missed inspections or failures to conduct inspections on time). GPS-based inspection system: Uses a built-in GPS and camera, smartphones with Windows Mobile operating systems, or custom devices equipped with GPS+GPRS. The built-in GPS enables determination of coordinates on-site, while the built-in camera allows taking photos of the site. Data can be transmitted in real time via GPRS. Management can monitor inspectors in real time and ensure strict oversight and evaluation. Inspectors can submit reports immediately when they detect issues such as exposed pipes, thereby initiating the tracking process. GPS+RFID card dual-mode inspection system; Application areas: Inspection of pipelines and associated facilities in the power, telecommunications, and petroleum industries ； Field data collection by enterprises in industries such as petroleum and water resources that operate over large geographical areas ； Inspection of urban utilities ； Line inspection in the road and railway industries

Inspection methods: 1. DCS inspection. Flow meters are installed at both ends of the pipeline to monitor flow changes on each side ； ⒉Regular manual inspections ； ⒊Cams are installed in relatively concealed locations within a certain distance for monitoring purposes, to carry out surveillance inspections.

1: Use an overpass, which is difficult to climb, and attach warning signs. Do more publicity, after all, it is a flammable and explosive material. 2: Others follow what is stated on the 3rd floor.