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Safety Instrumented Systems - Iec 61511 Functional Safety
Published 6/2026
Created by ProjectEngPro Engineering and Project Management
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: Beginner | Genre: eLearning | Language: English | Duration: 13 Lectures ( 2h 33m ) | Size: 3.3 GB[/center]
IEC 61511 lifecycle | SIL determination & LOPA | SRS, SIF design & SIL verification (PFDavg)
What you'll learn
⚡ Explain functional safety and the IEC 61511 safety lifecycle from hazard study to decommissioning
⚡ Carry out hazard and risk assessment as the input to SIL determination
⚡ Determine SIL using LOPA - initiating events, independent protection layers and the risk gap
⚡ Write a safety requirement specification that bridges the hazard study and the SIS design
⚡ Design a safety instrumented function - sensors, logic solver and final elements
⚡ Select voting architectures (1oo1, 1oo2, 2oo2, 2oo3) balancing safety and spurious trips
⚡ Verify a SIF by calculating PFDavg against the target SIL and architectural constraints
⚡ Apply safe failure fraction and hardware fault tolerance to architecture selection
⚡ Plan proof testing intervals and procedures to maintain the achieved SIL
⚡ Manage bypasses and overrides on a safety instrumented system safely
⚡ Scope a functional safety assessment across the lifecycle phases
⚡ Take a hazard through to a verified safety instrumented function as a section project
Requirements
❗ A background in C&I, control, automation, process or safety engineering is assumed
❗ Familiarity with P&IDs, control loops and basic process plant equipment
❗ This is a practitioner-level course, not a first introduction to process safety
❗ No specific SIL verification software is required to follow the material
❗ A willingness to work through a LOPA and a PFDavg calculation by hand
Description
Every major process plant on earth operates safety instrumented systems that must perform on demand - sometimes after years of sitting dormant. The engineer who understands the IEC 61511 lifecycle, can conduct a LOPA, write an SRS, and verify a SIL calculation is the one who protects both the plant and the people working in it.
This course teaches functional safety the way it is practised on major hazard installations. It covers the IEC 61511 safety lifecycle, hazard and risk assessment, SIL determination and LOPA, the safety requirement specification, SIF design and SIL verification, and the operate, test, and management phases that follow.
The work is anchored in IEC 61511 - the process-sector functional safety standard - and its parent IEC 61508, with the LOPA methodology for SIL determination and the PFDavg calculation that proves a safety function meets its target.
It opens with what functional safety is and why it exists, then the IEC 61511 safety lifecycle as the spine that organises every activity from hazard study to decommissioning.
Hazard and risk assessment sets up the inputs, then SIL determination is taught with LOPA across the initiating events, independent protection layers, and the risk gap that defines the required SIL.
The safety requirement specification is given its own lesson because the SRS is where most real SIS projects succeed or fail - it is the contract between the hazard study and the design.
SIF design covers sensors, logic solvers and final elements, voting architectures - 1oo1, 1oo2, 2oo2, 2oo3 - and the trade-off between safety and spurious trips, followed by SIL verification: calculating PFDavg against architectural constraints and the safe failure fraction.
The later lessons cover proof testing, bypass management, and functional safety assessment - the operate-and-maintain phase where a SIS either stays trustworthy or quietly degrades.
The course is built by a practising engineer with 15+ years delivering SIS and functional safety on oil and gas and energy projects - including SIL determinations, safety requirement specifications, SIL verification calculations, and functional safety assessments on active major hazard installations. The section project takes a hazard through to a verified SIF.
If you want to work confidently across the IEC 61511 lifecycle - and to defend a SIL calculation to an assessor - start with the lifecycle lessons and work through to the verification project.
Who this course is for
⭐ C&I, control and safety engineers who specify, design or verify safety instrumented systems
⭐ Functional safety practitioners conducting SIL determination, LOPA and SIL verification
⭐ Process, mechanical and project engineers who participate in LOPA and write or review safety requirement specifications
⭐ Commissioning and maintenance staff responsible for SIS proof testing and bypass management
⭐ System integrators and vendor engineers designing SIS logic solvers and final elements
⭐ Anyone preparing for the TUV Functional Safety Engineer (IEC 61511) examination
⭐ Graduates, apprentices and career changers needing a structured functional safety grounding
Homepage
Safety Instrumented Systems - Iec 61511 Functional Safety
Published 6/2026
Created by ProjectEngPro Engineering and Project Management
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: Beginner | Genre: eLearning | Language: English | Duration: 13 Lectures ( 2h 33m ) | Size: 3.3 GB[/center]
IEC 61511 lifecycle | SIL determination & LOPA | SRS, SIF design & SIL verification (PFDavg)
What you'll learn
⚡ Explain functional safety and the IEC 61511 safety lifecycle from hazard study to decommissioning
⚡ Carry out hazard and risk assessment as the input to SIL determination
⚡ Determine SIL using LOPA - initiating events, independent protection layers and the risk gap
⚡ Write a safety requirement specification that bridges the hazard study and the SIS design
⚡ Design a safety instrumented function - sensors, logic solver and final elements
⚡ Select voting architectures (1oo1, 1oo2, 2oo2, 2oo3) balancing safety and spurious trips
⚡ Verify a SIF by calculating PFDavg against the target SIL and architectural constraints
⚡ Apply safe failure fraction and hardware fault tolerance to architecture selection
⚡ Plan proof testing intervals and procedures to maintain the achieved SIL
⚡ Manage bypasses and overrides on a safety instrumented system safely
⚡ Scope a functional safety assessment across the lifecycle phases
⚡ Take a hazard through to a verified safety instrumented function as a section project
Requirements
❗ A background in C&I, control, automation, process or safety engineering is assumed
❗ Familiarity with P&IDs, control loops and basic process plant equipment
❗ This is a practitioner-level course, not a first introduction to process safety
❗ No specific SIL verification software is required to follow the material
❗ A willingness to work through a LOPA and a PFDavg calculation by hand
Description
Every major process plant on earth operates safety instrumented systems that must perform on demand - sometimes after years of sitting dormant. The engineer who understands the IEC 61511 lifecycle, can conduct a LOPA, write an SRS, and verify a SIL calculation is the one who protects both the plant and the people working in it.
This course teaches functional safety the way it is practised on major hazard installations. It covers the IEC 61511 safety lifecycle, hazard and risk assessment, SIL determination and LOPA, the safety requirement specification, SIF design and SIL verification, and the operate, test, and management phases that follow.
The work is anchored in IEC 61511 - the process-sector functional safety standard - and its parent IEC 61508, with the LOPA methodology for SIL determination and the PFDavg calculation that proves a safety function meets its target.
It opens with what functional safety is and why it exists, then the IEC 61511 safety lifecycle as the spine that organises every activity from hazard study to decommissioning.
Hazard and risk assessment sets up the inputs, then SIL determination is taught with LOPA across the initiating events, independent protection layers, and the risk gap that defines the required SIL.
The safety requirement specification is given its own lesson because the SRS is where most real SIS projects succeed or fail - it is the contract between the hazard study and the design.
SIF design covers sensors, logic solvers and final elements, voting architectures - 1oo1, 1oo2, 2oo2, 2oo3 - and the trade-off between safety and spurious trips, followed by SIL verification: calculating PFDavg against architectural constraints and the safe failure fraction.
The later lessons cover proof testing, bypass management, and functional safety assessment - the operate-and-maintain phase where a SIS either stays trustworthy or quietly degrades.
The course is built by a practising engineer with 15+ years delivering SIS and functional safety on oil and gas and energy projects - including SIL determinations, safety requirement specifications, SIL verification calculations, and functional safety assessments on active major hazard installations. The section project takes a hazard through to a verified SIF.
If you want to work confidently across the IEC 61511 lifecycle - and to defend a SIL calculation to an assessor - start with the lifecycle lessons and work through to the verification project.
Who this course is for
⭐ C&I, control and safety engineers who specify, design or verify safety instrumented systems
⭐ Functional safety practitioners conducting SIL determination, LOPA and SIL verification
⭐ Process, mechanical and project engineers who participate in LOPA and write or review safety requirement specifications
⭐ Commissioning and maintenance staff responsible for SIS proof testing and bypass management
⭐ System integrators and vendor engineers designing SIS logic solvers and final elements
⭐ Anyone preparing for the TUV Functional Safety Engineer (IEC 61511) examination
⭐ Graduates, apprentices and career changers needing a structured functional safety grounding
Homepage
Code:
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