Previously mentioned factors that a

Previously mentioned factors that affect system security divided into human behavior, technical skills and some do not meet reason, But, this paper also included stations environment and equipment, the main intent is to emphasize coordination and interaction, during human-ware, hardware, software and environment in CNG fuelling station system, reflect person as a system of each section of main body, the occurrence of the event, has played an important role, rather than that of induced cause of the accident classification. Also said that as the system core, human how through the coordination and connection relationship contact with other factors, in which links prone to human error, how to avoid, such as the car out of control, the gas selling equipment, impact resistance under certain circumstances, how to improve the recognition and contingency ability to resist the impact of strong.Whether the transport sector, or oil and gas industry, when most accidents occurred, should not blindly blamed equipment, objective existence, and natural disasters [12] and other reasons, we should not blindly put the blame on an objective and natural disasters and other reasons, also can't show helpless, and shirk responsibility. On the contrary, they must analyze their own weaknesses and shortcomings, looking for their own reasons, from the failure to find reasons, learn a lesson, to improve the quality to overcome behavior, technology and environmental deficiencies. In practice, often ignore human is the carrier of nature, also is the product of nature, similarly, human beings are thinking animals, with initiative, with model must be each factor of synergy, understanding, analysis and understanding their own ability and the behavior, it will not only make full use of various factors, but also coordination with the various factors, to serve the various factors, the factor for men.