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Systems or Component
These are the hardware related aspects of functional safety. These are pieces of equipment that may have to be selected, procured, and installed to complete your SIFs and SIS. Or perhaps hardware related concepts that directly relate to a compliant SIS.
- Basic Process Control System (BPCS)
- E/E/PE – Electrical/Electronic/Programmable Electronic System
- Electromechanical Device
- Final Element
- Hardware Fault Tolerance (HFT)
- Instrument
- Logic Solver
- Programmable Electronic System (PES)
- Routes (1H, 2H, 1S, 2S, 3S)
- Safety PLC
- Safety Torque Off (STO)
- Smart Logic Module
- Type A Devices and Type B Devices
- Useful Life
- Watchdog Timer
Glossary Category
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- Factory Acceptance Test (FAT)
- Failure Modes and Effects Analysis (FMEA)
- Failure Modes, Effects, and Diagnostic Analysis (FMEDA)
- Failure Rate (λ)
- Fault Tree Analysis (FTA)
- Final Element
- Five Nines of Reliability (99.999% Uptime)
- Fixed Programming Language (FPL)
- Full Variability Language (FVL)
- Functional Narrative
- Functional Safety Assessment (FSA)
- Functional Safety Management (FSM)
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- Machinery Safety
- Main Interlock List (MIL)
- Major Accident
- Markov Model
- Maximum Permitted Repair Time (MPRT)
- Mean Detection Time (MDT)
- Mean Repair Time (MRT)
- Mean Time Between Failure (MTBF)
- Mean Time to Fail Spurious (MTTFsp)
- Mean Time to Failure (MTTF)
- Mean Time to Restore (MTTR)
- Mechanical Integrity Program (MI)
- Mode of Operation
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- PEAR Model - People, Environment, Asset, Reputation
- Physical Failure
- Prior Use
- Probability of Failure on Demand (PFD)
- Probability of Failure per Hour (PFH)
- Probable Loss of Life (PLL)
- Process Hazard Analysis (PHA)
- Process Safety Information (PSI)
- Process Safety Management (PSM)
- Process Safety Time (PST)
- Product Safety Manual
- Programmable Electronic System (PES)
- Proof Test
- Proof Test Coverage (Cpt)
- Proof Test Interval (TI)
- Proven In Use
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- Safe Failure Fraction (SFF)
- Safety Instrumented Function (SIF)
- Safety Instrumented System (SIS)
- Safety Integrity Level (SIL)
- Safety PLC
- Safety Requirements Specification (SRS)
- Safety Torque Off (STO)
- Semi-Quantitative Risk Analysis
- SIL Certificate
- SIL Declaration of Conformity
- SIS Safety Lifecycle
- Site Acceptance Test (SAT)
- Site Integration Test (SIT)
- Smart Logic Module
- Spurious Trip Rate (STR)
- Stated Risk
- Stated Risk Tolerance
- Systematic Capability
- Systematic Failure
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