Abstract
Incomplete process hazard analysis (PHA) and poor knowledge management have been two major reasons that have caused numerous lamentable disasters in the chemical process industry (CPI). To improve PHA quality, a new integration framework that combines HAZOP, layer of protection analysis (LOPA), safety requirements specification (SRS) and safety integrity level (SIL) validation is proposed in this paper. To facilitate the integrated work flow and improve the relevant knowledge management, an intelligent software platform named HASILT has been developed by our research team. Its key components and functions are described in this paper. Furthermore, since the platform keeps all history data in a central case base and case-based reasoning is used to automatically retrieve similar old cases for helping resolve new problems, a recall opportunity is created to reduce information loss which has been cited many times as a common root cause in investigations of accidents.
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