Application and Practice of Safety Instrumented System in Products Oil Depot
The products oil depot of a company in Anhui Province constitutes a secondary major hazard source,The major hazard source has no independent safety instrument system and storage tank emergency cut-off system,which constitutes a major safety hazard.After the safety integrity rating(SIL)and improvement,the safety instrument system was added,and 14 storage tanks were equipped with tuning fork liquid level switches and electro-hydraulic and electric shut-off valves.The"1oo1"voting method was adopted to realize the high/low liquid level alarm interlock cut-off function of the storage tank,in which the storage tanks that constitute the secondary major hazard sources are respectively provided with emergency stop buttons.The safety instrumented system effectively reduces the risk of products oil depots and provides a guarantee for safe production.