Control Systems Hazard & Operability Analysis (CHAZOP)
Control Hazards and Operability Analysis (CHAZOP) is a structured hazards identification methodology for instrumented controls and computer systems.
It is used to analyze failure modes of new systems or in conjunction with existing systems to ensure the introduction of the new systems does not result in unsafe facilities operation.
The scope of the study covers all the Instruments and Control systems like DCS, ESD, SCADA Field Instruments, Local Control Panel, UPS, Fire & Gas system, etc. and involves a detailed analysis of the computer system / environment, I/O signals and control schemes, safety shutdown system etc. ultimately ensuring any failure shall not lead to hazardous conditions in the facilities.