Safety integrity level hazard analysis/risk assessment

Hazard Analysis Risk Assessment System Safety Elements Safety Integrity Requirements System Integrity Levels System Validation Retro-fitting Documentation... [Pg.233]

General References Guidelines for Hazard Evaluation Procedures, Second Edition with Worked Examples, American Institute of Chemical Engineers, New York, 1992 Layer of Protection Analysis A Simplified Risk Assessment Approach, American Institute of Chemical Engineers, New York, 2001 ISA TR84.00.02, Safety Instrumented Functions (SIF)—Safety Integrity Level (SIL) Evaluation Techniques, Instrumentation, Systems, and Automation Society, N.C., 2002. [Pg.102]

Control System (BPCS), including functions of Supervisory Control and Data Acquisition (SCADA) system, the alarm system (AS) and Safety Instrumented Systems (SIS) performing defined Safety Instrumented Frmetions (SIF). Proper design of layers of protection is based on hazards analysis and risk assessment with consideration of human and organizational factors. It is essential to ensure required safety integrity level (SIL) for each of these layers. [Pg.309]

Integral part of the risk analysis of a critical system is identification and assessment of hazards that significantly contribute to risk (Rausand Hoyland 2004). The hazard analysis generates data required in the next stage of analysis, which lead to description of risk scenarios, definition of safety functions, evaluation of actual risk levels and required risk reduction. Then the technical specification of safety-related functions to be realized by the system architectures considered to select most justified one. [Pg.99]