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Functional safety concept for hazardous systems and new challenges |
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| Institution: | 1. College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing, China;2. Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway;1. School of Automobile and Transportation, Xihua University, Chengdu 610039, China;2. Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, China;3. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China;4. Key Laboratory of Product Defect and Safety for State Market Regulation, SAMR Defective Product Administrative Center (DPAC), Beijing 100101, China;5. Yangtze Delta Region Branch of China National Institute of Standardization, Zhejiang 314006, China |
| Abstract: | Selected issues associated with the functional safety analysis according to the international standards IEC 61508 and IEC 61511 are presented. Determining the safety integrity level (SIL) of electric/electronic/programmable electronic (E/E/PE) safety-related systems is outlined. The importance of quantitative probabilistic modeling of these systems in verifying SIL is emphasized. Some aspects concerning the functional safety analysis of systems for detecting the combustible or toxic gases in relation to a CENELEC draft standard prEN 50402 are shortly discussed. Basic principles of methodology for the functional safety assessment of protective systems for potentially explosive atmospheres proposed in a CEN draft standard prEN 15233 are addressed. |
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