Procedure for assessing hardware safety integrity in legacy systems
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- 作者：Gi Young Kima ; Ki Hoon Yooa ; Byung Gak Kob ; Joong Soon Janga ; jsjang@ajou.ac.kr" class="auth_mail" title="E-mail the corresponding author
- 关键词：Hardware safety integrity ; Legacy system ; Safety integrity level ; Boiler control system ; IEC 61508
- 刊名：Journal of Loss Prevention in the Process Industries
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：40
- 期：Complete
- 页码：461-470
- 全文大小：1915 K
文摘
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This research presents a procedure for assessing the hardware safety integrity of a legacy system.
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A function-structure map is used to respond effectively to the safety functions of the related hardware components and to prevent an error that an SIL evaluation is performed for safety-related systems.
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The proposed assessment procedure is applied to a boiler control system of a fossil-fuel power plant.
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The hardware SIL of each safety function is determined to be SIL3 in the boiler control system.