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CNG Cylinder E-tag Safety Management System

A gas cylinder is a typical movable pressurized container. Under normal temperature, its inside wall pressure is usually several, tens or even hundreds of times the atmospheric pressure. In addition, the media contained in gas cylinders are in most cases flammable, explosive or toxic. In recent years, as the fuel gas industry booms, the sizes of both production and consumption are becoming bigger and bigger. More and more places are using gases, thus making the situations more and more complex. Serious accidents like fire disasters, leaks and explosions occur in production, transportation, storage and use processes, not only causing significant losses of life and property, but also producing significant negative impacts on public safety and stability. How to scientifically and effectively manage gas cylinders has become a difficult issue for relevant governmental organs.

Considering the serious situations regarding safe use of gas cylinders, the State Council and the General Administration of Quality Supervision, Inspection and Quarantine have issued several laws and regulations, including the Regulations on Safety Supervision of Special Equipment, the Rules on Safety Supervision of Gas Cylinders, the Regulations on Safety Supervision of Gas Cylinders, etc. Such laws and regulations provide detailed requirements for various steps in the gas cylinder circulation process. With scientific advancements and technological developments, it is very inefficient to depend on operators experience and sense of responsibility in identifying rusty ineligible steel stamps and hand-written paper records. With that mode of management, quality and safety is totally subject to human factors. In addition, the heavy workloads of governmental safety supervisors and industry-wide ignorance of safety regulations contribute to ineffective control and supervision of gas cylinders, which gives rise to frequent accidentsas its unique . One of the main reasons is that there is no scientific and effective technical means for managing gas cylinders. Chongqing Municipal Gas Cylinder E-tag Safety Management System is planned for construction in three parts: CNG Gas Cylinder E-tag Safety Management System, Industrial Gas Cylinder E-tag Safety Management System and LPG Gas Cylinder E-tag Safety Management System.

CNG Gas Cylinder E-tag Safety Management System uses the internationally advanced RFID technology for identification and management of gas cylinders. It combines such technologies as RF identification, microelectronics, computer, network, wireless communication, automatic control, etc for dynamically tracking and control of CNG gas cylinders. An RF e-tag is installed on each CNG gas cylinder as its unique "E-ID" for dynamic tracking and management. This is a scientific and reasonable CNG gas cylinder management system.

Overall System Design

  1. Application integration tools for integration of application systems
    With respect to system integration, it introduces the concept of base application platform and uses mature integration tools, e.g. workflow tool, report tool, data exchange tool, data transmission tool, etc. On the basis of integrating such tools, it also provides application systems for integration of personnel, information, processes, etc. This enables the system to share information and coordinate management with other operation systems of the Golden Shield Project and Golden Gate Project&rdquo.
  2. Advanced application design structure mode for directing development of applications
    As to the system architecture design mode, it uses the MVC and, from three perspectives display, control and data access provides technical designs for business data display layer, business logic control layer, business data access layer and business data storage layer.
  3. Constructing system management model
    The information management system is modeled according to its operations management contents, the inherent relationships among operations and operations application deployment, and is briefly described.
  4. Mainly designing the core application functions of system
    With respect to application functions, mainly designing core functional modules and functions that should be included. Design is refined according to actual requirements and management highlights.
  5. Integrating system according to application characteristics
    With respect to system application deployment, integrate and optimize the system by region and level according to operation characteristics and objects of service.
  6. Scientifically designing the system with reference to CMMI 3 software process model
    The system development model is designed in strict compliance with CMMI 3 software process model from such perspectives as product development process, product iteration development mode, application system integration, etc. This ensures the standardization, advancement, reasonableness, practicality and economy of system design schemes.

Overall Architecture

As shown in the figure, the CNG gas cylinder e-tag safety management network system consists of the foreground and background software systems and front-end hardware components (identification terminals, controllers, transmitters, etc.). It covers such contents as definition of system application roles, system networks and hardware platforms, servers and data storage systems, standard system construction, application system construction, interfaces and interactions with other systems etc.

  1. Definition of application system roles: the system defines and manages the roles concerning quality inspection system, including workers, leaders, supervisors, enterprises and governmental organizations (manufacturers, refitting factories, complete-vehicle makers, charging stations, etc), the public, etc.
  2. System networks and hardware platforms: the networks and hardware of the CNG Gas Cylinder E-tag Safety Management System construction is divided into two parts one being the construction of network and hardware in the quality and technical supervision system of Chongqing Municipality uses existing resources (using existing networks, hardware and safety platforms for business applications and functional deployments), and the other being the construction of society-oriented application services this part is finished via Internet.
  3. Servers and data storage systems: CNG Gas Cylinder E-tag Safety Management System will have an independent database server and application server connected to the servers of other operation systems. A storage and backup system will be established.
  4. Application system: CNG Gas Cylinder E-tag Safety Management System fundamentally enables information sharing, application coordination and base platform standardization. Its scheme design, content construction and application deployment are performed in three aspects: people integration, information integration and process integration.
  5. Standard system design: the problems regarding e-administration system construction in China are inconsistent data standards, discontinuous business processes and information silos. So, standardization is the important fundamental work in project construction and also the key point and bottle neck that constrains the development of e-administration in China. It is the precondition for e-administration system interconnection, information sharing, business coordination, safety and reliability.
  6. Interfaces and interactions with other systems: connecting the CNG Gas Cylinder E-tag Safety Management System with the special equipment business systems of the General Administration of Quality Supervision, Inspection and Quarantine and Chongqing Municipality and enabling interconnections among relevant subsystems of Chongqing Municipal Bureau of Quality Supervision, Inspection and Quarantine. It has corresponding interfaces and data exchange capabilities.

Functional Structure

CNG Gas Cylinder E-tag Safety Management System is functionally divided into background comprehensive application subsystem and foreground client subsystem. The background application subsystem, developed using the B/S mode and JAVA technology, is mainly used for data transmission summarization, collation and analysis, data maintenance, routine patrol, supervision and management, etc. The foreground client subsystem, developed using the C/S mode and PowerBuilder technology, is mainly used for internal management and data collection of the user organization.

Overall functional requirements of the system:

  1. The system uses a scientific approach to distinguish the types of hidden dangers and provide alarms by colors (e.g. green for qualified, yellow for alarm, red for hidden danger, etc.), provide alarm messages at eye-catching locations and give audio alerts.
  2. Data in the system is encrypted for storage and transmission. Establish a database backup strategy to ensure system data security. The system uses identity authentication, authority control, multi-level authentication, access logos and other means to ensure application security.
  3. The system provides open data interfaces for real-time data exchange with the existing test software of the National Compressed Natural Gas (CNG) Cylinder Quality Supervision and Inspection Center and for seamless integration with the Golden Project of Chongqing Municipal Bureau of Quality Supervision, Inspection and Quarantine. When needed, it can exchange data with other existing systems.
  4. The gas cylinder lifecycle description provided by the system meets the requirements of relevant technical safety specifications.

Typical Cases

This system is already successfully operating in Chongqing Municipality.

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