Inspection
Work Planning
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An independent protection system that implements one or more Safety Instrumented Functions to reduce process risk.
A Safety Instrumented System (SIS) is an independent engineered protection system that implements one or more Safety Instrumented Functions (SIFs) to detect hazardous process conditions and automatically place the process into a safe state. An SIS operates independently of the basic process control system to reduce the likelihood and consequences of hazardous events.
Safety Instrumented Systems provide independent automated protection against hazardous process conditions.
Safety Instrumented Systems are designed, implemented, operated and maintained in accordance with functional safety standards such as IEC 61511 and IEC 61508 to achieve specified Safety Integrity Levels.
A Safety Instrumented System implements one or more Safety Instrumented Functions, whereas a Basic Process Control System is primarily intended to control normal process operation.
Process Safety; Functional Safety; Industrial Automation.
Oil and gas.; Petrochemical.; Chemical processing.; Power generation.; Manufacturing.
IEC 61511
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