游乐设施安全相关系统安全完整性评价方法研究

Research on Safety Integrity Level Evaluation Method for Safety-related Systems in Amusement Rides

针对目前国内游乐设施安全相关系统在安全完整性评价方法方面的空白,本文参照国际通用安全相关系统功能安全相关标准,借鉴安全仪表系统功能安全评价方法,结合游乐设施本身运动特点和结构型式基础上,开发了适用于游乐设施控制安全相关系统的安全完整性评价方法。该方法以安全相关系统安全功能风险评估为基础,结合失效案例库和风险矩阵法获得安全功能的SIL等级。以典型控制回路四种可靠性指标为基础,参照国际通用标准的SIL验证柱状图对所设计的控制安全回路进行SIL等级验证,以确认安全回路设计的有效性。

Due to the blank of evaluation method of safety integrity level of domestic amusement rides safetyrelated systems, evaluation method of safety integrity level of amusement rides safety-related systems is developed in this paper based on the characteristics of amusement rides structure and movement, referencing to international general function safety standards and evaluation method of safety instrument system function safety. The evaluation method is based on the risk analysis of safety-related systems safety function, and obtains the SIL by failure database and risk matrix. Based on four reliability indexes of typical control circuit, SIL of control circuit is verified by histogram from general safety function standards. The method above can efficiently confirm the safety and reliability of control circuit.