| SIL确认在天然气脱水撬安全仪表设计中的应用 |
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| 引用本文： | 汪应红,王群英,付晓恒. SIL确认在天然气脱水撬安全仪表设计中的应用[J]. 化工自动化及仪表, 2012, 39(1): 103-107 |
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| 作者姓名： | 汪应红 王群英 付晓恒 |
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| 作者单位： | 1. 中国矿业大学(北京)化学与环境工程学院,北京,100083
2. 华电电力科学研究院,杭州,310030 |
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| 摘 要： | 利用基于危险与可操作性(HAZOP)结果的安全完整性等级(SIL)半定量分析方法,对天然气脱水装置的安全仪表系统设计进行改进,使其风险降低到可接受标准以内。该方法首先从HAZOP分析结果中选取高风险场景,再评价相关安全措施的有效性,以确定是否有足够有效的安全措施,最后根据评价结果判断新增SIS的必要性,以及需要达到SIL的等级。结果表明:利用该方法可以准确确认安全仪表系统的SIL等级,进而采取有效措施降低运行天然气脱水装置的风险水平。
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| 关 键 词： | 天然气脱水 安全仪表系统 安全完整性等级 |
SIL Determination in Designing Safe Instruments for Nature Gas Dehydration Unit |
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| WANG Ying-hong , WANG Qun-yin , FU Xiao-heng. SIL Determination in Designing Safe Instruments for Nature Gas Dehydration Unit[J]. Control and Instruments In Chemical Industry, 2012, 39(1): 103-107 |
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| Authors: | WANG Ying-hong WANG Qun-yin FU Xiao-heng |
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| Affiliation: | 1. School of Chemical and Environmental Engineering, China University of Mining ＆ Technology, Beijing 100083 , China; 2. CHD Electric Power Research Institute, Hangzhou 310030, China) |
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| Abstract: | A semi-quantitative safe integrity level （SIL） determination process based on hazard and operability （HAZOP） was provided to assess safe instrument system （SIS） in the nature gas dehydration unit so that the risk level can meet the indicated criteria; firstly, having the scenario with the highest risk identified from HAZOP results, and then having the effectiveness of the related protection layer studied to make sure the existence of safe system and the SIL as required. The result indicates that this method can be applied to determining SIL of SIS effectively so that the risk level of the dehydration unit becomes acceptable. |
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| Keywords: | nature gas dehydration safe instrument system safe integrity level |
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